./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer --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 b3e737313822321e0eb735a05809c2d5347ec165 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:56:51,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:51,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:51,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:51,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:51,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:51,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:51,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:51,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:51,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:51,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:51,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:51,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:51,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:51,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:51,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:51,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:51,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:51,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:51,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:51,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:51,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:51,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:51,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:51,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:51,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:51,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:51,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:51,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:51,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:51,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:51,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:51,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:51,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:51,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:51,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:51,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:51,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:51,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:51,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:51,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:51,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:56:51,744 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:51,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:51,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:51,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:51,746 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:51,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:51,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:56:51,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:51,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:56:51,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:51,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:51,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:51,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:51,747 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:56:51,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:51,748 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:51,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:51,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:51,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:51,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:51,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:51,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:51,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:51,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:51,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:51,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:51,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:56:51,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:51,751 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer 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 -> b3e737313822321e0eb735a05809c2d5347ec165 [2019-11-25 08:56:51,884 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:51,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:51,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:51,901 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:51,901 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:51,902 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2019-11-25 08:56:51,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/data/6e65eac5d/e60930d94e3144fda23f5b931b3c63ea/FLAG620a82a96 [2019-11-25 08:56:52,373 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:52,374 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2019-11-25 08:56:52,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/data/6e65eac5d/e60930d94e3144fda23f5b931b3c63ea/FLAG620a82a96 [2019-11-25 08:56:52,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/data/6e65eac5d/e60930d94e3144fda23f5b931b3c63ea [2019-11-25 08:56:52,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:52,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:52,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:52,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:52,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:52,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:52" (1/1) ... [2019-11-25 08:56:52,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0a0a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:52, skipping insertion in model container [2019-11-25 08:56:52,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:52" (1/1) ... [2019-11-25 08:56:52,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:52,816 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:53,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:53,202 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:53,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:53,338 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:53,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53 WrapperNode [2019-11-25 08:56:53,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:53,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:53,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:53,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:53,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:53,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:53,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:53,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:53,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... [2019-11-25 08:56:53,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:53,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:53,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:53,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:53,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/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 [2019-11-25 08:56:53,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:56:53,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:56:53,480 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2019-11-25 08:56:53,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2019-11-25 08:56:53,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:56:53,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:56:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2019-11-25 08:56:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2019-11-25 08:56:53,486 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:56:53,597 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_read_lock_returnLabel [2019-11-25 08:56:53,601 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_read_lock_returnLabel [2019-11-25 08:56:53,762 INFO L1493 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_take_write_lock_returnLabel [2019-11-25 08:56:53,771 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:53,771 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:56:53,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:53 BoogieIcfgContainer [2019-11-25 08:56:53,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:53,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:53,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:53,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:53,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:52" (1/3) ... [2019-11-25 08:56:53,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811cbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:53, skipping insertion in model container [2019-11-25 08:56:53,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:53" (2/3) ... [2019-11-25 08:56:53,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3811cbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:53, skipping insertion in model container [2019-11-25 08:56:53,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:53" (3/3) ... [2019-11-25 08:56:53,779 INFO L109 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2019-11-25 08:56:53,836 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,836 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,836 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,836 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,837 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,837 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,837 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,838 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,838 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,838 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,838 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,839 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,839 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,839 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,839 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,839 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,840 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,840 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,841 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,841 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,841 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,841 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,841 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,841 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,842 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork2_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,842 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,842 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,843 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,843 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,843 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,843 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,844 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,844 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,844 WARN L315 ript$VariableManager]: TermVariabe readerThread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,844 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,844 WARN L315 ript$VariableManager]: TermVariabe |readerThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,845 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,845 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,845 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,846 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,846 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,846 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,846 WARN L315 ript$VariableManager]: TermVariabe readerThread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,847 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,847 WARN L315 ript$VariableManager]: TermVariabe |readerThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,848 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,848 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,848 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,848 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,848 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,849 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,849 WARN L315 ript$VariableManager]: TermVariabe readerThread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,849 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,850 WARN L315 ript$VariableManager]: TermVariabe |readerThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,850 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,850 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,850 WARN L315 ript$VariableManager]: TermVariabe writerThread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,851 WARN L315 ript$VariableManager]: TermVariabe writerThread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,851 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,851 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,852 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,852 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,852 WARN L315 ript$VariableManager]: TermVariabe writerThread3of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,852 WARN L315 ript$VariableManager]: TermVariabe writerThread3of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,853 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,853 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,853 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,853 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,854 WARN L315 ript$VariableManager]: TermVariabe writerThread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,854 WARN L315 ript$VariableManager]: TermVariabe writerThread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,854 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,854 WARN L315 ript$VariableManager]: TermVariabe |writerThread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,855 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,855 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,855 WARN L315 ript$VariableManager]: TermVariabe writerThread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,855 WARN L315 ript$VariableManager]: TermVariabe writerThread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,856 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,856 WARN L315 ript$VariableManager]: TermVariabe |writerThread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,857 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,857 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,857 WARN L315 ript$VariableManager]: TermVariabe writerThread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,857 WARN L315 ript$VariableManager]: TermVariabe writerThread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,858 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,858 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,858 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,858 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,858 WARN L315 ript$VariableManager]: TermVariabe writerThread1of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,859 WARN L315 ript$VariableManager]: TermVariabe writerThread1of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,859 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,859 WARN L315 ript$VariableManager]: TermVariabe |writerThread1of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:56:53,961 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:56:53,961 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:53,968 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-25 08:56:53,978 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-25 08:56:53,999 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:54,000 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:54,000 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:54,000 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:54,001 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:54,006 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:54,007 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:54,007 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:54,030 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 175 places, 196 transitions [2019-11-25 08:56:55,951 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 22597 states. [2019-11-25 08:56:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22597 states. [2019-11-25 08:56:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:56:55,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:55,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:55,966 INFO L410 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1465904493, now seen corresponding path program 1 times [2019-11-25 08:56:55,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:55,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135098986] [2019-11-25 08:56:55,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:56,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135098986] [2019-11-25 08:56:56,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:56,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:56,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490859225] [2019-11-25 08:56:56,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:56:56,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:56,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:56:56,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:56:56,196 INFO L87 Difference]: Start difference. First operand 22597 states. Second operand 4 states. [2019-11-25 08:56:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:57,219 INFO L93 Difference]: Finished difference Result 53211 states and 199743 transitions. [2019-11-25 08:56:57,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:56:57,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-11-25 08:56:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:57,536 INFO L225 Difference]: With dead ends: 53211 [2019-11-25 08:56:57,536 INFO L226 Difference]: Without dead ends: 38181 [2019-11-25 08:56:57,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38181 states. [2019-11-25 08:56:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38181 to 20682. [2019-11-25 08:56:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20682 states. [2019-11-25 08:56:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20682 states to 20682 states and 79026 transitions. [2019-11-25 08:56:59,206 INFO L78 Accepts]: Start accepts. Automaton has 20682 states and 79026 transitions. Word has length 24 [2019-11-25 08:56:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:59,207 INFO L462 AbstractCegarLoop]: Abstraction has 20682 states and 79026 transitions. [2019-11-25 08:56:59,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:56:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 20682 states and 79026 transitions. [2019-11-25 08:56:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:56:59,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:59,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:59,215 INFO L410 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:56:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:59,216 INFO L82 PathProgramCache]: Analyzing trace with hash -389075560, now seen corresponding path program 1 times [2019-11-25 08:56:59,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:59,216 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461282302] [2019-11-25 08:56:59,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:59,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461282302] [2019-11-25 08:56:59,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:59,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:56:59,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113802887] [2019-11-25 08:56:59,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:56:59,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:59,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:56:59,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:59,328 INFO L87 Difference]: Start difference. First operand 20682 states and 79026 transitions. Second operand 3 states. [2019-11-25 08:56:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:59,679 INFO L93 Difference]: Finished difference Result 18942 states and 68443 transitions. [2019-11-25 08:56:59,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:56:59,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-25 08:56:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:59,756 INFO L225 Difference]: With dead ends: 18942 [2019-11-25 08:56:59,756 INFO L226 Difference]: Without dead ends: 18702 [2019-11-25 08:56:59,757 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:56:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18702 states. [2019-11-25 08:57:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18702 to 18702. [2019-11-25 08:57:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18702 states. [2019-11-25 08:57:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18702 states to 18702 states and 67575 transitions. [2019-11-25 08:57:00,330 INFO L78 Accepts]: Start accepts. Automaton has 18702 states and 67575 transitions. Word has length 26 [2019-11-25 08:57:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:00,331 INFO L462 AbstractCegarLoop]: Abstraction has 18702 states and 67575 transitions. [2019-11-25 08:57:00,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:57:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 18702 states and 67575 transitions. [2019-11-25 08:57:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:57:00,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:00,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:00,333 INFO L410 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:00,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1273646738, now seen corresponding path program 2 times [2019-11-25 08:57:00,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:00,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767718216] [2019-11-25 08:57:00,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:00,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767718216] [2019-11-25 08:57:00,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:00,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:57:00,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737836451] [2019-11-25 08:57:00,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:57:00,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:00,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:57:00,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:57:00,428 INFO L87 Difference]: Start difference. First operand 18702 states and 67575 transitions. Second operand 4 states. [2019-11-25 08:57:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:00,642 INFO L93 Difference]: Finished difference Result 17298 states and 57247 transitions. [2019-11-25 08:57:00,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:57:00,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-11-25 08:57:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:00,701 INFO L225 Difference]: With dead ends: 17298 [2019-11-25 08:57:00,701 INFO L226 Difference]: Without dead ends: 16722 [2019-11-25 08:57:00,701 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:57:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16722 states. [2019-11-25 08:57:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16722 to 12993. [2019-11-25 08:57:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12993 states. [2019-11-25 08:57:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12993 states to 12993 states and 43428 transitions. [2019-11-25 08:57:01,348 INFO L78 Accepts]: Start accepts. Automaton has 12993 states and 43428 transitions. Word has length 26 [2019-11-25 08:57:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:01,349 INFO L462 AbstractCegarLoop]: Abstraction has 12993 states and 43428 transitions. [2019-11-25 08:57:01,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:57:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12993 states and 43428 transitions. [2019-11-25 08:57:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:57:01,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:01,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:01,352 INFO L410 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1818715428, now seen corresponding path program 1 times [2019-11-25 08:57:01,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:01,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144436135] [2019-11-25 08:57:01,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:01,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144436135] [2019-11-25 08:57:01,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:01,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:57:01,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083141035] [2019-11-25 08:57:01,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:57:01,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:01,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:57:01,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:57:01,419 INFO L87 Difference]: Start difference. First operand 12993 states and 43428 transitions. Second operand 4 states. [2019-11-25 08:57:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:01,564 INFO L93 Difference]: Finished difference Result 14325 states and 47561 transitions. [2019-11-25 08:57:01,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:57:01,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-25 08:57:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:01,609 INFO L225 Difference]: With dead ends: 14325 [2019-11-25 08:57:01,609 INFO L226 Difference]: Without dead ends: 8832 [2019-11-25 08:57:01,610 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8832 states. [2019-11-25 08:57:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8832 to 7335. [2019-11-25 08:57:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7335 states. [2019-11-25 08:57:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 23841 transitions. [2019-11-25 08:57:01,790 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 23841 transitions. Word has length 30 [2019-11-25 08:57:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:01,792 INFO L462 AbstractCegarLoop]: Abstraction has 7335 states and 23841 transitions. [2019-11-25 08:57:01,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:57:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 23841 transitions. [2019-11-25 08:57:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:57:01,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:01,800 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:01,800 INFO L410 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 373986524, now seen corresponding path program 1 times [2019-11-25 08:57:01,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:01,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584343615] [2019-11-25 08:57:01,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:01,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584343615] [2019-11-25 08:57:01,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:01,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:57:01,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861155390] [2019-11-25 08:57:01,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:57:01,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:01,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:57:01,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:01,891 INFO L87 Difference]: Start difference. First operand 7335 states and 23841 transitions. Second operand 5 states. [2019-11-25 08:57:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:01,959 INFO L93 Difference]: Finished difference Result 8559 states and 27435 transitions. [2019-11-25 08:57:01,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:57:01,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-11-25 08:57:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:01,982 INFO L225 Difference]: With dead ends: 8559 [2019-11-25 08:57:01,983 INFO L226 Difference]: Without dead ends: 7380 [2019-11-25 08:57:01,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7380 states. [2019-11-25 08:57:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7380 to 6804. [2019-11-25 08:57:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6804 states. [2019-11-25 08:57:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6804 states to 6804 states and 22285 transitions. [2019-11-25 08:57:02,160 INFO L78 Accepts]: Start accepts. Automaton has 6804 states and 22285 transitions. Word has length 38 [2019-11-25 08:57:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:02,162 INFO L462 AbstractCegarLoop]: Abstraction has 6804 states and 22285 transitions. [2019-11-25 08:57:02,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:57:02,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6804 states and 22285 transitions. [2019-11-25 08:57:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:57:02,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:57:02,169 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:57:02,169 INFO L410 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:57:02,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:57:02,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1752020858, now seen corresponding path program 2 times [2019-11-25 08:57:02,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:57:02,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183923746] [2019-11-25 08:57:02,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:57:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:57:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:57:02,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183923746] [2019-11-25 08:57:02,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:57:02,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:57:02,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713130727] [2019-11-25 08:57:02,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:57:02,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:57:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:57:02,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:02,269 INFO L87 Difference]: Start difference. First operand 6804 states and 22285 transitions. Second operand 5 states. [2019-11-25 08:57:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:57:02,302 INFO L93 Difference]: Finished difference Result 1908 states and 5205 transitions. [2019-11-25 08:57:02,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:57:02,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-11-25 08:57:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:57:02,303 INFO L225 Difference]: With dead ends: 1908 [2019-11-25 08:57:02,303 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:57:02,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:57:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:57:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:57:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:57:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:57:02,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-11-25 08:57:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:57:02,305 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:57:02,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:57:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:57:02,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:57:02,307 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:57:02,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:57:02 BasicIcfg [2019-11-25 08:57:02,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:57:02,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:57:02,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:57:02,309 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:57:02,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:53" (3/4) ... [2019-11-25 08:57:02,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:57:02,317 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2019-11-25 08:57:02,317 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2019-11-25 08:57:02,321 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-25 08:57:02,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:57:02,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:57:02,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_99d3467e-12e2-4b8b-9a2b-41849c29b698/bin/uautomizer/witness.graphml [2019-11-25 08:57:02,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:57:02,355 INFO L168 Benchmark]: Toolchain (without parser) took 9592.62 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 755.5 MB). Free memory was 940.7 MB in the beginning and 969.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 726.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:02,356 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:57:02,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:02,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.15 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. [2019-11-25 08:57:02,357 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 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. [2019-11-25 08:57:02,357 INFO L168 Benchmark]: RCFGBuilder took 358.46 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: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:02,358 INFO L168 Benchmark]: TraceAbstraction took 8535.86 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 599.3 MB). Free memory was 1.1 GB in the beginning and 974.8 MB in the end (delta: 114.0 MB). Peak memory consumption was 713.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:02,358 INFO L168 Benchmark]: Witness Printer took 44.47 ms. Allocated memory is still 1.8 GB. Free memory was 974.8 MB in the beginning and 969.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:57:02,361 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 576.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -178.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.15 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 23.15 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 358.46 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: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8535.86 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 599.3 MB). Free memory was 1.1 GB in the beginning and 974.8 MB in the end (delta: 114.0 MB). Peak memory consumption was 713.3 MB. Max. memory is 11.5 GB. * Witness Printer took 44.47 ms. Allocated memory is still 1.8 GB. Free memory was 974.8 MB in the beginning and 969.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 168 locations, 7 error locations. Result: SAFE, OverallTime: 8.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 797 SDtfs, 614 SDslu, 910 SDs, 0 SdLazy, 154 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22597occurred 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: 3.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 23301 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 10908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...