./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/safe027_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e526d74601a089e7b16096a17c73a44c48d37c41 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 18:32:02,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 18:32:02,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 18:32:02,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 18:32:02,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 18:32:02,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 18:32:02,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 18:32:02,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 18:32:02,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 18:32:02,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 18:32:02,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 18:32:02,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 18:32:02,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 18:32:02,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 18:32:02,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 18:32:02,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 18:32:02,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 18:32:02,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 18:32:02,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 18:32:02,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 18:32:02,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 18:32:02,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 18:32:02,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 18:32:02,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 18:32:02,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 18:32:02,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 18:32:02,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 18:32:02,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 18:32:02,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 18:32:02,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 18:32:02,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 18:32:02,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 18:32:02,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 18:32:02,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 18:32:02,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 18:32:02,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 18:32:02,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 18:32:02,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 18:32:02,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 18:32:02,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 18:32:02,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 18:32:02,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 18:32:02,376 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 18:32:02,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 18:32:02,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 18:32:02,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 18:32:02,379 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 18:32:02,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 18:32:02,380 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 18:32:02,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 18:32:02,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 18:32:02,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 18:32:02,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 18:32:02,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 18:32:02,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 18:32:02,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 18:32:02,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 18:32:02,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 18:32:02,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 18:32:02,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 18:32:02,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 18:32:02,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 18:32:02,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 18:32:02,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:32:02,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 18:32:02,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 18:32:02,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 18:32:02,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 18:32:02,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 18:32:02,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 18:32:02,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 18:32:02,388 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(__VERIFIER_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 -> e526d74601a089e7b16096a17c73a44c48d37c41 [2019-11-28 18:32:02,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 18:32:02,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 18:32:02,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 18:32:02,708 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 18:32:02,709 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 18:32:02,710 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-11-28 18:32:02,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260e3a86b/b46136d4c28e4754b8e55b6fa643e9d1/FLAG8359b262e [2019-11-28 18:32:03,346 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 18:32:03,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2019-11-28 18:32:03,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260e3a86b/b46136d4c28e4754b8e55b6fa643e9d1/FLAG8359b262e [2019-11-28 18:32:03,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/260e3a86b/b46136d4c28e4754b8e55b6fa643e9d1 [2019-11-28 18:32:03,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 18:32:03,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 18:32:03,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 18:32:03,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 18:32:03,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 18:32:03,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:32:03" (1/1) ... [2019-11-28 18:32:03,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ddb269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:03, skipping insertion in model container [2019-11-28 18:32:03,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:32:03" (1/1) ... [2019-11-28 18:32:03,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 18:32:03,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 18:32:04,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:32:04,247 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 18:32:04,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 18:32:04,393 INFO L208 MainTranslator]: Completed translation [2019-11-28 18:32:04,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04 WrapperNode [2019-11-28 18:32:04,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 18:32:04,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 18:32:04,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 18:32:04,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 18:32:04,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 18:32:04,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 18:32:04,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 18:32:04,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 18:32:04,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... [2019-11-28 18:32:04,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 18:32:04,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 18:32:04,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 18:32:04,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 18:32:04,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 18:32:04,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 18:32:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-28 18:32:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 18:32:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 18:32:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-28 18:32:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-28 18:32:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-28 18:32:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-28 18:32:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-28 18:32:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-28 18:32:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-28 18:32:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-28 18:32:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-28 18:32:04,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 18:32:04,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 18:32:04,563 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 18:32:04,954 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 18:32:04,954 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 18:32:04,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:32:04 BoogieIcfgContainer [2019-11-28 18:32:04,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 18:32:04,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 18:32:04,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 18:32:04,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 18:32:04,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:32:03" (1/3) ... [2019-11-28 18:32:04,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4842d014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:32:04, skipping insertion in model container [2019-11-28 18:32:04,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:32:04" (2/3) ... [2019-11-28 18:32:04,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4842d014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:32:04, skipping insertion in model container [2019-11-28 18:32:04,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:32:04" (3/3) ... [2019-11-28 18:32:04,964 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2019-11-28 18:32:04,973 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 18:32:04,974 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 18:32:04,981 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 18:32:04,982 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 18:32:05,023 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,025 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,025 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,026 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,026 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,028 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,028 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,029 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,029 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,029 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,030 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,030 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,031 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,031 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,032 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,032 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,032 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,034 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,036 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,036 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,036 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,037 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,037 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,038 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 18:32:05,080 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 18:32:05,100 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 18:32:05,100 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 18:32:05,101 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 18:32:05,101 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 18:32:05,101 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 18:32:05,101 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 18:32:05,101 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 18:32:05,102 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 18:32:05,121 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 65 transitions [2019-11-28 18:32:05,123 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-11-28 18:32:05,170 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-11-28 18:32:05,170 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:32:05,177 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:32:05,180 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 77 places, 65 transitions [2019-11-28 18:32:05,200 INFO L134 PetriNetUnfolder]: 1/61 cut-off events. [2019-11-28 18:32:05,200 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 18:32:05,202 INFO L76 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-11-28 18:32:05,204 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-11-28 18:32:05,206 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 18:32:06,669 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-11-28 18:32:06,862 INFO L206 etLargeBlockEncoding]: Checked pairs total: 687 [2019-11-28 18:32:06,866 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2019-11-28 18:32:06,871 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions [2019-11-28 18:32:06,912 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 110 states. [2019-11-28 18:32:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2019-11-28 18:32:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 18:32:06,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:06,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:06,932 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:06,943 INFO L82 PathProgramCache]: Analyzing trace with hash -162708018, now seen corresponding path program 1 times [2019-11-28 18:32:06,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:06,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386957190] [2019-11-28 18:32:06,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:07,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386957190] [2019-11-28 18:32:07,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:07,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 18:32:07,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142804795] [2019-11-28 18:32:07,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:07,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:07,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:07,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:07,352 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2019-11-28 18:32:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:07,435 INFO L93 Difference]: Finished difference Result 122 states and 301 transitions. [2019-11-28 18:32:07,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:07,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 18:32:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:07,450 INFO L225 Difference]: With dead ends: 122 [2019-11-28 18:32:07,450 INFO L226 Difference]: Without dead ends: 76 [2019-11-28 18:32:07,452 INFO L630 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 [2019-11-28 18:32:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-28 18:32:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-11-28 18:32:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-28 18:32:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 182 transitions. [2019-11-28 18:32:07,495 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 182 transitions. Word has length 10 [2019-11-28 18:32:07,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:07,496 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 182 transitions. [2019-11-28 18:32:07,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 182 transitions. [2019-11-28 18:32:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 18:32:07,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:07,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:07,499 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:07,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1102272548, now seen corresponding path program 1 times [2019-11-28 18:32:07,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:07,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264907770] [2019-11-28 18:32:07,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:07,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264907770] [2019-11-28 18:32:07,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:07,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:07,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587655263] [2019-11-28 18:32:07,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:32:07,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:07,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:32:07,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:07,661 INFO L87 Difference]: Start difference. First operand 76 states and 182 transitions. Second operand 5 states. [2019-11-28 18:32:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:07,732 INFO L93 Difference]: Finished difference Result 83 states and 182 transitions. [2019-11-28 18:32:07,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:32:07,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 18:32:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:07,736 INFO L225 Difference]: With dead ends: 83 [2019-11-28 18:32:07,736 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 18:32:07,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:32:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 18:32:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-28 18:32:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-28 18:32:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 150 transitions. [2019-11-28 18:32:07,748 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 150 transitions. Word has length 11 [2019-11-28 18:32:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:07,749 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 150 transitions. [2019-11-28 18:32:07,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:32:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 150 transitions. [2019-11-28 18:32:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 18:32:07,750 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:07,750 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:07,751 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:07,752 INFO L82 PathProgramCache]: Analyzing trace with hash -11530752, now seen corresponding path program 1 times [2019-11-28 18:32:07,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:07,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845260995] [2019-11-28 18:32:07,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:07,918 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845260995] [2019-11-28 18:32:07,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:07,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:32:07,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338108510] [2019-11-28 18:32:07,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 18:32:07,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:07,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 18:32:07,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:32:07,921 INFO L87 Difference]: Start difference. First operand 68 states and 150 transitions. Second operand 6 states. [2019-11-28 18:32:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,040 INFO L93 Difference]: Finished difference Result 67 states and 136 transitions. [2019-11-28 18:32:08,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:32:08,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-28 18:32:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,042 INFO L225 Difference]: With dead ends: 67 [2019-11-28 18:32:08,042 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 18:32:08,043 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-28 18:32:08,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 18:32:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-28 18:32:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 18:32:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2019-11-28 18:32:08,050 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 12 [2019-11-28 18:32:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,051 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2019-11-28 18:32:08,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 18:32:08,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2019-11-28 18:32:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 18:32:08,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,052 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,053 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,053 INFO L82 PathProgramCache]: Analyzing trace with hash -349293673, now seen corresponding path program 1 times [2019-11-28 18:32:08,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394920268] [2019-11-28 18:32:08,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,197 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394920268] [2019-11-28 18:32:08,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 18:32:08,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331593021] [2019-11-28 18:32:08,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 18:32:08,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 18:32:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:32:08,200 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 7 states. [2019-11-28 18:32:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,321 INFO L93 Difference]: Finished difference Result 53 states and 106 transitions. [2019-11-28 18:32:08,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 18:32:08,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-11-28 18:32:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,323 INFO L225 Difference]: With dead ends: 53 [2019-11-28 18:32:08,323 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 18:32:08,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-28 18:32:08,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 18:32:08,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-28 18:32:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 18:32:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 98 transitions. [2019-11-28 18:32:08,328 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 98 transitions. Word has length 13 [2019-11-28 18:32:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,329 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 98 transitions. [2019-11-28 18:32:08,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 18:32:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 98 transitions. [2019-11-28 18:32:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,330 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,330 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,330 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2056881420, now seen corresponding path program 1 times [2019-11-28 18:32:08,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660098865] [2019-11-28 18:32:08,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660098865] [2019-11-28 18:32:08,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415857016] [2019-11-28 18:32:08,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:32:08,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:32:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,513 INFO L87 Difference]: Start difference. First operand 48 states and 98 transitions. Second operand 5 states. [2019-11-28 18:32:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,562 INFO L93 Difference]: Finished difference Result 53 states and 103 transitions. [2019-11-28 18:32:08,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:08,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:32:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,566 INFO L225 Difference]: With dead ends: 53 [2019-11-28 18:32:08,566 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 18:32:08,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:32:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 18:32:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 18:32:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 18:32:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2019-11-28 18:32:08,574 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 14 [2019-11-28 18:32:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,575 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2019-11-28 18:32:08,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:32:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2019-11-28 18:32:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,579 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,579 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1378905044, now seen corresponding path program 2 times [2019-11-28 18:32:08,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505055598] [2019-11-28 18:32:08,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505055598] [2019-11-28 18:32:08,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964664604] [2019-11-28 18:32:08,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:08,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:08,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:08,705 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand 4 states. [2019-11-28 18:32:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,733 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2019-11-28 18:32:08,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:32:08,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:32:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,734 INFO L225 Difference]: With dead ends: 33 [2019-11-28 18:32:08,734 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 18:32:08,735 INFO L630 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 [2019-11-28 18:32:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 18:32:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-28 18:32:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 18:32:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-28 18:32:08,737 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 14 [2019-11-28 18:32:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,737 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-28 18:32:08,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:08,738 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-28 18:32:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,739 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,739 INFO L82 PathProgramCache]: Analyzing trace with hash -549919962, now seen corresponding path program 3 times [2019-11-28 18:32:08,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728560094] [2019-11-28 18:32:08,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,801 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728560094] [2019-11-28 18:32:08,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 18:32:08,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223527200] [2019-11-28 18:32:08,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:32:08,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:32:08,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,803 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 5 states. [2019-11-28 18:32:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,838 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-28 18:32:08,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 18:32:08,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:32:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,839 INFO L225 Difference]: With dead ends: 29 [2019-11-28 18:32:08,839 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 18:32:08,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-28 18:32:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 18:32:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 18:32:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 18:32:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 18:32:08,841 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2019-11-28 18:32:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,842 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 18:32:08,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:32:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 18:32:08,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,843 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,843 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2103109014, now seen corresponding path program 4 times [2019-11-28 18:32:08,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068786337] [2019-11-28 18:32:08,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068786337] [2019-11-28 18:32:08,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332805594] [2019-11-28 18:32:08,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 18:32:08,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 18:32:08,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-28 18:32:08,907 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 5 states. [2019-11-28 18:32:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:08,924 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 18:32:08,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 18:32:08,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-28 18:32:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:08,925 INFO L225 Difference]: With dead ends: 22 [2019-11-28 18:32:08,926 INFO L226 Difference]: Without dead ends: 15 [2019-11-28 18:32:08,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-28 18:32:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-28 18:32:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-28 18:32:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 18:32:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-11-28 18:32:08,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-11-28 18:32:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:08,928 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-11-28 18:32:08,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 18:32:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-11-28 18:32:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 18:32:08,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 18:32:08,929 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 18:32:08,929 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 18:32:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 18:32:08,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2031929270, now seen corresponding path program 5 times [2019-11-28 18:32:08,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 18:32:08,930 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736194625] [2019-11-28 18:32:08,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 18:32:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 18:32:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 18:32:08,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736194625] [2019-11-28 18:32:08,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 18:32:08,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 18:32:08,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601195198] [2019-11-28 18:32:08,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 18:32:08,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 18:32:08,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 18:32:08,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 18:32:08,982 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2019-11-28 18:32:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 18:32:09,001 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-11-28 18:32:09,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 18:32:09,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 18:32:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 18:32:09,002 INFO L225 Difference]: With dead ends: 14 [2019-11-28 18:32:09,002 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 18:32:09,003 INFO L630 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 [2019-11-28 18:32:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 18:32:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 18:32:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 18:32:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 18:32:09,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-28 18:32:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 18:32:09,004 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 18:32:09,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 18:32:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 18:32:09,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 18:32:09,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:32:09 BasicIcfg [2019-11-28 18:32:09,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 18:32:09,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 18:32:09,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 18:32:09,009 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 18:32:09,009 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:32:04" (3/4) ... [2019-11-28 18:32:09,012 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 18:32:09,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-28 18:32:09,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-28 18:32:09,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-28 18:32:09,019 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-28 18:32:09,026 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 18:32:09,026 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 18:32:09,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 18:32:09,081 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 18:32:09,082 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 18:32:09,084 INFO L168 Benchmark]: Toolchain (without parser) took 5411.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -138.7 MB). Peak memory consumption was 78.3 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,087 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -156.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,089 INFO L168 Benchmark]: Boogie Preprocessor took 35.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 18:32:09,090 INFO L168 Benchmark]: RCFGBuilder took 459.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,093 INFO L168 Benchmark]: TraceAbstraction took 4050.91 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -20.5 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,094 INFO L168 Benchmark]: Witness Printer took 73.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2019-11-28 18:32:09,101 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 721.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -156.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 66.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 459.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4050.91 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -20.5 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * Witness Printer took 73.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 28 ProgramPointsAfterwards, 65 TransitionsBefore, 21 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 362 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 687 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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 5 procedures, 65 locations, 1 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 197 SDslu, 129 SDs, 0 SdLazy, 121 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 6341 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...