./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/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 713cebf5ac496914464c3b07e269efb1002ec95d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:37:05,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:37:05,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:37:05,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:37:05,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:37:05,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:37:05,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:37:05,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:37:05,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:37:05,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:37:05,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:37:05,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:37:05,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:37:05,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:37:05,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:37:05,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:37:05,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:37:05,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:37:05,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:37:05,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:37:05,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:37:05,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:37:05,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:37:05,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:37:05,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:37:05,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:37:05,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:37:05,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:37:05,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:37:05,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:37:05,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:37:05,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:37:05,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:37:05,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:37:05,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:37:05,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:37:05,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:37:05,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:37:05,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:37:05,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:37:05,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:37:05,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:37:05,424 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:37:05,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:37:05,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:37:05,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:37:05,426 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:37:05,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:37:05,426 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:37:05,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:37:05,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:37:05,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:37:05,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:37:05,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:37:05,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:37:05,428 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:37:05,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:37:05,428 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:37:05,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:37:05,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:37:05,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:37:05,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:37:05,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:37:05,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:37:05,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:37:05,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:37:05,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:37:05,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:37:05,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:37:05,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:37:05,431 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_66ef6446-1ffa-437e-87f6-9cea4651fe15/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 -> 713cebf5ac496914464c3b07e269efb1002ec95d [2019-11-16 00:37:05,483 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:37:05,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:37:05,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:37:05,506 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:37:05,507 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:37:05,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2019-11-16 00:37:05,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/data/bcf19ee43/b0949cba30764c8794a9d556b71e21ec/FLAG75a44dbf4 [2019-11-16 00:37:06,040 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:37:06,040 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2019-11-16 00:37:06,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/data/bcf19ee43/b0949cba30764c8794a9d556b71e21ec/FLAG75a44dbf4 [2019-11-16 00:37:06,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/data/bcf19ee43/b0949cba30764c8794a9d556b71e21ec [2019-11-16 00:37:06,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:37:06,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:37:06,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:37:06,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:37:06,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:37:06,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:06" (1/1) ... [2019-11-16 00:37:06,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2c5c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:06, skipping insertion in model container [2019-11-16 00:37:06,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:06" (1/1) ... [2019-11-16 00:37:06,329 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:37:06,399 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:37:06,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:37:06,907 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:37:06,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:37:07,037 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:37:07,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07 WrapperNode [2019-11-16 00:37:07,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:37:07,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:37:07,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:37:07,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:37:07,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:37:07,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:37:07,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:37:07,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:37:07,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... [2019-11-16 00:37:07,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:37:07,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:37:07,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:37:07,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:37:07,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/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 [2019-11-16 00:37:07,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:37:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-16 00:37:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:37:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-16 00:37:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-16 00:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-16 00:37:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-16 00:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-16 00:37:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-16 00:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-16 00:37:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-16 00:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-16 00:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:37:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:37:07,190 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-16 00:37:07,527 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:37:07,527 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-16 00:37:07,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:07 BoogieIcfgContainer [2019-11-16 00:37:07,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:37:07,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:37:07,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:37:07,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:37:07,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:06" (1/3) ... [2019-11-16 00:37:07,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@942868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:07, skipping insertion in model container [2019-11-16 00:37:07,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:07" (2/3) ... [2019-11-16 00:37:07,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@942868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:07, skipping insertion in model container [2019-11-16 00:37:07,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:07" (3/3) ... [2019-11-16 00:37:07,538 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2019-11-16 00:37:07,572 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,572 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,573 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,573 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,573 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,573 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,574 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,574 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,574 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,575 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,575 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,575 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,575 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,576 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,576 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,576 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,576 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,577 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,577 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,577 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,578 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,578 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,578 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,578 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:37:07,597 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-16 00:37:07,597 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:37:07,604 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:37:07,614 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:37:07,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:37:07,630 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:37:07,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:37:07,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:37:07,631 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:37:07,631 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:37:07,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:37:07,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:37:07,639 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 62 transitions [2019-11-16 00:37:07,948 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5474 states. [2019-11-16 00:37:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5474 states. [2019-11-16 00:37:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-16 00:37:07,978 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:07,979 INFO L380 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] [2019-11-16 00:37:07,981 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:07,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:07,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1118685925, now seen corresponding path program 1 times [2019-11-16 00:37:07,994 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:07,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964982294] [2019-11-16 00:37:07,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:07,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:07,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:08,472 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964982294] [2019-11-16 00:37:08,473 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:08,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:37:08,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204385246] [2019-11-16 00:37:08,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:37:08,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:08,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:37:08,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:37:08,494 INFO L87 Difference]: Start difference. First operand 5474 states. Second operand 4 states. [2019-11-16 00:37:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:08,670 INFO L93 Difference]: Finished difference Result 5711 states and 21936 transitions. [2019-11-16 00:37:08,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:37:08,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-16 00:37:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:08,728 INFO L225 Difference]: With dead ends: 5711 [2019-11-16 00:37:08,729 INFO L226 Difference]: Without dead ends: 2395 [2019-11-16 00:37:08,730 INFO L600 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 [2019-11-16 00:37:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2019-11-16 00:37:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2395. [2019-11-16 00:37:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2395 states. [2019-11-16 00:37:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 8939 transitions. [2019-11-16 00:37:08,966 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 8939 transitions. Word has length 37 [2019-11-16 00:37:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:08,968 INFO L462 AbstractCegarLoop]: Abstraction has 2395 states and 8939 transitions. [2019-11-16 00:37:08,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:37:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 8939 transitions. [2019-11-16 00:37:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-16 00:37:08,974 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:08,974 INFO L380 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] [2019-11-16 00:37:08,975 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1811625669, now seen corresponding path program 1 times [2019-11-16 00:37:08,976 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:08,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478194406] [2019-11-16 00:37:08,976 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:08,976 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:08,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:09,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478194406] [2019-11-16 00:37:09,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:09,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:37:09,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081762714] [2019-11-16 00:37:09,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:37:09,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:37:09,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:37:09,147 INFO L87 Difference]: Start difference. First operand 2395 states and 8939 transitions. Second operand 5 states. [2019-11-16 00:37:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:09,264 INFO L93 Difference]: Finished difference Result 2566 states and 9323 transitions. [2019-11-16 00:37:09,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:37:09,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-11-16 00:37:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:09,289 INFO L225 Difference]: With dead ends: 2566 [2019-11-16 00:37:09,289 INFO L226 Difference]: Without dead ends: 2311 [2019-11-16 00:37:09,290 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:37:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2019-11-16 00:37:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2311. [2019-11-16 00:37:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2019-11-16 00:37:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 8547 transitions. [2019-11-16 00:37:09,389 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 8547 transitions. Word has length 38 [2019-11-16 00:37:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:09,390 INFO L462 AbstractCegarLoop]: Abstraction has 2311 states and 8547 transitions. [2019-11-16 00:37:09,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:37:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 8547 transitions. [2019-11-16 00:37:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-16 00:37:09,397 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:09,397 INFO L380 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, 1] [2019-11-16 00:37:09,397 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1590233122, now seen corresponding path program 1 times [2019-11-16 00:37:09,398 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:09,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407627342] [2019-11-16 00:37:09,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:09,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:09,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:09,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407627342] [2019-11-16 00:37:09,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:09,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-16 00:37:09,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982494519] [2019-11-16 00:37:09,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:37:09,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:09,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:37:09,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:37:09,515 INFO L87 Difference]: Start difference. First operand 2311 states and 8547 transitions. Second operand 6 states. [2019-11-16 00:37:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:09,645 INFO L93 Difference]: Finished difference Result 2176 states and 7683 transitions. [2019-11-16 00:37:09,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:37:09,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-11-16 00:37:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:09,667 INFO L225 Difference]: With dead ends: 2176 [2019-11-16 00:37:09,667 INFO L226 Difference]: Without dead ends: 1933 [2019-11-16 00:37:09,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:37:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2019-11-16 00:37:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1933. [2019-11-16 00:37:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2019-11-16 00:37:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 6909 transitions. [2019-11-16 00:37:09,815 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 6909 transitions. Word has length 39 [2019-11-16 00:37:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:09,816 INFO L462 AbstractCegarLoop]: Abstraction has 1933 states and 6909 transitions. [2019-11-16 00:37:09,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:37:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 6909 transitions. [2019-11-16 00:37:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-16 00:37:09,821 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:09,821 INFO L380 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, 1, 1] [2019-11-16 00:37:09,822 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1091525354, now seen corresponding path program 1 times [2019-11-16 00:37:09,823 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:09,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045231976] [2019-11-16 00:37:09,823 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:09,823 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:09,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:09,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045231976] [2019-11-16 00:37:09,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:09,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:37:09,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660789611] [2019-11-16 00:37:09,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:37:09,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:37:09,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:37:09,939 INFO L87 Difference]: Start difference. First operand 1933 states and 6909 transitions. Second operand 7 states. [2019-11-16 00:37:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:10,078 INFO L93 Difference]: Finished difference Result 1366 states and 4533 transitions. [2019-11-16 00:37:10,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:37:10,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-16 00:37:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:10,091 INFO L225 Difference]: With dead ends: 1366 [2019-11-16 00:37:10,092 INFO L226 Difference]: Without dead ends: 1177 [2019-11-16 00:37:10,093 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:37:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2019-11-16 00:37:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1177. [2019-11-16 00:37:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2019-11-16 00:37:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 3885 transitions. [2019-11-16 00:37:10,133 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 3885 transitions. Word has length 40 [2019-11-16 00:37:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:10,135 INFO L462 AbstractCegarLoop]: Abstraction has 1177 states and 3885 transitions. [2019-11-16 00:37:10,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:37:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 3885 transitions. [2019-11-16 00:37:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-16 00:37:10,139 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:10,139 INFO L380 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, 1, 1, 1] [2019-11-16 00:37:10,140 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:10,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1566287999, now seen corresponding path program 1 times [2019-11-16 00:37:10,140 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:10,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022051976] [2019-11-16 00:37:10,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:10,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:10,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:10,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022051976] [2019-11-16 00:37:10,283 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:10,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:37:10,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52854893] [2019-11-16 00:37:10,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:37:10,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:10,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:37:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:37:10,284 INFO L87 Difference]: Start difference. First operand 1177 states and 3885 transitions. Second operand 7 states. [2019-11-16 00:37:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:10,408 INFO L93 Difference]: Finished difference Result 1726 states and 5778 transitions. [2019-11-16 00:37:10,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:37:10,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-16 00:37:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:10,417 INFO L225 Difference]: With dead ends: 1726 [2019-11-16 00:37:10,417 INFO L226 Difference]: Without dead ends: 877 [2019-11-16 00:37:10,418 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:37:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-11-16 00:37:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2019-11-16 00:37:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-11-16 00:37:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 2889 transitions. [2019-11-16 00:37:10,445 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 2889 transitions. Word has length 41 [2019-11-16 00:37:10,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:10,446 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 2889 transitions. [2019-11-16 00:37:10,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:37:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2889 transitions. [2019-11-16 00:37:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-16 00:37:10,448 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:10,448 INFO L380 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, 1, 1, 1] [2019-11-16 00:37:10,449 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash -828181101, now seen corresponding path program 2 times [2019-11-16 00:37:10,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:10,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658098492] [2019-11-16 00:37:10,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:10,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:10,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:10,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658098492] [2019-11-16 00:37:10,614 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:10,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:37:10,614 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926710986] [2019-11-16 00:37:10,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:37:10,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:10,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:37:10,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:37:10,616 INFO L87 Difference]: Start difference. First operand 877 states and 2889 transitions. Second operand 7 states. [2019-11-16 00:37:10,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:10,731 INFO L93 Difference]: Finished difference Result 1390 states and 4671 transitions. [2019-11-16 00:37:10,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:37:10,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-16 00:37:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:10,741 INFO L225 Difference]: With dead ends: 1390 [2019-11-16 00:37:10,741 INFO L226 Difference]: Without dead ends: 769 [2019-11-16 00:37:10,742 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:37:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2019-11-16 00:37:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2019-11-16 00:37:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2019-11-16 00:37:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2577 transitions. [2019-11-16 00:37:10,767 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2577 transitions. Word has length 41 [2019-11-16 00:37:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:10,768 INFO L462 AbstractCegarLoop]: Abstraction has 769 states and 2577 transitions. [2019-11-16 00:37:10,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:37:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2577 transitions. [2019-11-16 00:37:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-16 00:37:10,772 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:10,773 INFO L380 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, 1, 1, 1] [2019-11-16 00:37:10,773 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:10,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1424600153, now seen corresponding path program 3 times [2019-11-16 00:37:10,774 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:10,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50160451] [2019-11-16 00:37:10,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:10,775 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:10,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:10,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50160451] [2019-11-16 00:37:10,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:10,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:37:10,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913780686] [2019-11-16 00:37:10,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:37:10,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:10,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:37:10,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:37:10,943 INFO L87 Difference]: Start difference. First operand 769 states and 2577 transitions. Second operand 7 states. [2019-11-16 00:37:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:11,061 INFO L93 Difference]: Finished difference Result 1255 states and 4278 transitions. [2019-11-16 00:37:11,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:37:11,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-16 00:37:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:11,068 INFO L225 Difference]: With dead ends: 1255 [2019-11-16 00:37:11,069 INFO L226 Difference]: Without dead ends: 718 [2019-11-16 00:37:11,069 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:37:11,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-11-16 00:37:11,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-11-16 00:37:11,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-11-16 00:37:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2433 transitions. [2019-11-16 00:37:11,093 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2433 transitions. Word has length 41 [2019-11-16 00:37:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:11,093 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 2433 transitions. [2019-11-16 00:37:11,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:37:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2433 transitions. [2019-11-16 00:37:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-16 00:37:11,095 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:37:11,095 INFO L380 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, 1, 1, 1] [2019-11-16 00:37:11,096 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:37:11,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:37:11,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1587926817, now seen corresponding path program 4 times [2019-11-16 00:37:11,096 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:37:11,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485893513] [2019-11-16 00:37:11,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:11,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:37:11,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:37:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:37:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:37:11,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485893513] [2019-11-16 00:37:11,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:37:11,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:37:11,237 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182023736] [2019-11-16 00:37:11,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:37:11,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:37:11,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:37:11,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:37:11,238 INFO L87 Difference]: Start difference. First operand 718 states and 2433 transitions. Second operand 7 states. [2019-11-16 00:37:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:37:11,338 INFO L93 Difference]: Finished difference Result 556 states and 1839 transitions. [2019-11-16 00:37:11,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:37:11,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-16 00:37:11,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:37:11,338 INFO L225 Difference]: With dead ends: 556 [2019-11-16 00:37:11,338 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:37:11,339 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:37:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:37:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:37:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:37:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:37:11,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-11-16 00:37:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:37:11,340 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:37:11,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:37:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:37:11,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:37:11,344 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-16 00:37:11,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:37:11 BasicIcfg [2019-11-16 00:37:11,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:37:11,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:37:11,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:37:11,347 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:37:11,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:07" (3/4) ... [2019-11-16 00:37:11,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:37:11,358 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-16 00:37:11,358 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-16 00:37:11,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-16 00:37:11,359 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-16 00:37:11,374 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-16 00:37:11,382 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-16 00:37:11,429 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_66ef6446-1ffa-437e-87f6-9cea4651fe15/bin/uautomizer/witness.graphml [2019-11-16 00:37:11,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:37:11,432 INFO L168 Benchmark]: Toolchain (without parser) took 5118.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 280.5 MB). Free memory was 939.4 MB in the beginning and 995.4 MB in the end (delta: -56.0 MB). Peak memory consumption was 224.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:37:11,432 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:37:11,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:37:11,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.46 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. [2019-11-16 00:37:11,439 INFO L168 Benchmark]: Boogie Preprocessor took 26.30 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. [2019-11-16 00:37:11,439 INFO L168 Benchmark]: RCFGBuilder took 415.87 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: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:37:11,440 INFO L168 Benchmark]: TraceAbstraction took 3815.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 127.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.9 MB). Peak memory consumption was 206.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:37:11,440 INFO L168 Benchmark]: Witness Printer took 83.14 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 995.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:37:11,443 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 724.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -181.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.46 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 26.30 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 415.87 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: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3815.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 127.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 78.9 MB). Peak memory consumption was 206.9 MB. Max. memory is 11.5 GB. * Witness Printer took 83.14 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 995.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 9 procedures, 82 locations, 1 error locations. Result: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 462 SDtfs, 737 SDslu, 1228 SDs, 0 SdLazy, 169 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5474occurred 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: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 35510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...