./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.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/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/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 f18f7f1f917468e24f0e5d26966f1156107884dd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:05,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:05,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:05,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:05,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:05,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:05,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:05,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:05,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:05,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:05,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:05,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:05,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:05,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:05,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:05,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:05,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:05,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:05,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:05,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:05,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:05,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:05,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:05,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:05,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:05,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:05,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:05,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:05,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:05,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:05,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:05,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:05,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:05,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:05,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:05,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:05,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:05,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:05,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:05,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:05,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:05,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:05,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:05,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:05,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:05,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:05,476 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:05,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:05,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:05,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:05,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:05,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:05,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:05,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:05,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:05,478 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:05,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:05,479 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:05,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:05,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:05,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:05,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:05,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:05,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:05,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:05,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:05,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:05,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:05,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:05,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:05,481 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/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/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 -> f18f7f1f917468e24f0e5d26966f1156107884dd [2019-10-22 09:02:05,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:05,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:05,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:05,536 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:05,537 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:05,538 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2019-10-22 09:02:05,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/data/4e4efa627/7ca933c27f1c44f98039ae242fad86aa/FLAG941987fe6 [2019-10-22 09:02:06,053 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:06,053 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2019-10-22 09:02:06,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/data/4e4efa627/7ca933c27f1c44f98039ae242fad86aa/FLAG941987fe6 [2019-10-22 09:02:06,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/data/4e4efa627/7ca933c27f1c44f98039ae242fad86aa [2019-10-22 09:02:06,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:06,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:06,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:06,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:06,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:06,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:06" (1/1) ... [2019-10-22 09:02:06,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e95cc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:06, skipping insertion in model container [2019-10-22 09:02:06,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:06" (1/1) ... [2019-10-22 09:02:06,582 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:06,640 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:07,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:07,029 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:07,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:07,150 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:07,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07 WrapperNode [2019-10-22 09:02:07,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:07,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:07,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:07,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:07,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:07,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:07,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:07,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:07,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... [2019-10-22 09:02:07,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:07,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:07,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:07,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:07,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/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 [2019-10-22 09:02:07,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-22 09:02:07,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:07,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:07,859 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:07,860 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-10-22 09:02:07,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:07 BoogieIcfgContainer [2019-10-22 09:02:07,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:07,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:07,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:07,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:07,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:06" (1/3) ... [2019-10-22 09:02:07,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307b7c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:07, skipping insertion in model container [2019-10-22 09:02:07,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:07" (2/3) ... [2019-10-22 09:02:07,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307b7c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:07, skipping insertion in model container [2019-10-22 09:02:07,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:07" (3/3) ... [2019-10-22 09:02:07,872 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2019-10-22 09:02:07,884 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:07,893 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 09:02:07,905 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 09:02:07,932 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:07,932 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:07,933 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:07,933 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:07,933 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:07,933 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:07,933 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:07,933 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-10-22 09:02:07,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 09:02:07,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:07,957 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 09:02:07,959 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:07,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,966 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2019-10-22 09:02:07,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,975 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816963646] [2019-10-22 09:02:07,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:08,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816963646] [2019-10-22 09:02:08,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:08,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413450289] [2019-10-22 09:02:08,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:02:08,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:08,141 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-10-22 09:02:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:08,173 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2019-10-22 09:02:08,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:08,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-10-22 09:02:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:08,186 INFO L225 Difference]: With dead ends: 85 [2019-10-22 09:02:08,186 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 09:02:08,190 INFO L600 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 [2019-10-22 09:02:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 09:02:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-22 09:02:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 09:02:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-22 09:02:08,228 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 4 [2019-10-22 09:02:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:08,229 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-22 09:02:08,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:02:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-22 09:02:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:02:08,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:08,230 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:08,230 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,232 INFO L82 PathProgramCache]: Analyzing trace with hash 170685048, now seen corresponding path program 1 times [2019-10-22 09:02:08,232 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,233 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017472961] [2019-10-22 09:02:08,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,233 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:08,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017472961] [2019-10-22 09:02:08,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,332 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:08,332 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465175455] [2019-10-22 09:02:08,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:08,338 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:08,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:08,339 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2019-10-22 09:02:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:08,422 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2019-10-22 09:02:08,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:08,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 09:02:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:08,424 INFO L225 Difference]: With dead ends: 64 [2019-10-22 09:02:08,424 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 09:02:08,425 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 09:02:08,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-10-22 09:02:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 09:02:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-22 09:02:08,431 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2019-10-22 09:02:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:08,431 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-22 09:02:08,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-22 09:02:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:02:08,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:08,432 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:08,432 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,433 INFO L82 PathProgramCache]: Analyzing trace with hash 227943350, now seen corresponding path program 1 times [2019-10-22 09:02:08,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391475878] [2019-10-22 09:02:08,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:08,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391475878] [2019-10-22 09:02:08,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:02:08,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113968291] [2019-10-22 09:02:08,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:08,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:08,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:08,588 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2019-10-22 09:02:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:08,831 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2019-10-22 09:02:08,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:08,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-22 09:02:08,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:08,833 INFO L225 Difference]: With dead ends: 54 [2019-10-22 09:02:08,833 INFO L226 Difference]: Without dead ends: 52 [2019-10-22 09:02:08,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:02:08,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-22 09:02:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 34. [2019-10-22 09:02:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:02:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-22 09:02:08,846 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 15 [2019-10-22 09:02:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:08,847 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-22 09:02:08,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:08,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-22 09:02:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:02:08,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:08,847 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:08,848 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1186712674, now seen corresponding path program 1 times [2019-10-22 09:02:08,848 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691597753] [2019-10-22 09:02:08,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:08,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691597753] [2019-10-22 09:02:08,976 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:08,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514163113] [2019-10-22 09:02:08,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:08,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:08,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:08,977 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2019-10-22 09:02:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:09,044 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2019-10-22 09:02:09,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:09,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-22 09:02:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:09,046 INFO L225 Difference]: With dead ends: 63 [2019-10-22 09:02:09,046 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 09:02:09,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 09:02:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 09:02:09,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:02:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-10-22 09:02:09,058 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 19 [2019-10-22 09:02:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:09,058 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-10-22 09:02:09,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-10-22 09:02:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:02:09,059 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:09,059 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:09,060 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash -93151004, now seen corresponding path program 1 times [2019-10-22 09:02:09,060 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:09,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818004030] [2019-10-22 09:02:09,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:09,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:09,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:09,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818004030] [2019-10-22 09:02:09,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:09,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-22 09:02:09,222 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307520719] [2019-10-22 09:02:09,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 09:02:09,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 09:02:09,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:02:09,224 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 12 states. [2019-10-22 09:02:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:09,578 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2019-10-22 09:02:09,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 09:02:09,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-10-22 09:02:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:09,582 INFO L225 Difference]: With dead ends: 50 [2019-10-22 09:02:09,582 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 09:02:09,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-10-22 09:02:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 09:02:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-22 09:02:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 09:02:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-10-22 09:02:09,592 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2019-10-22 09:02:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:09,592 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-10-22 09:02:09,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 09:02:09,593 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-10-22 09:02:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:02:09,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:09,593 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:09,594 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:09,594 INFO L82 PathProgramCache]: Analyzing trace with hash -93091422, now seen corresponding path program 1 times [2019-10-22 09:02:09,594 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:09,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131735565] [2019-10-22 09:02:09,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:09,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:09,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:09,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131735565] [2019-10-22 09:02:09,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:09,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:09,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899965622] [2019-10-22 09:02:09,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:09,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:09,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:09,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:09,728 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 8 states. [2019-10-22 09:02:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:09,941 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2019-10-22 09:02:09,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:09,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 09:02:09,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:09,943 INFO L225 Difference]: With dead ends: 54 [2019-10-22 09:02:09,943 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 09:02:09,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:02:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 09:02:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2019-10-22 09:02:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 09:02:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2019-10-22 09:02:09,948 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 19 [2019-10-22 09:02:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:09,948 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2019-10-22 09:02:09,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2019-10-22 09:02:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:09,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:09,949 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] [2019-10-22 09:02:09,950 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:09,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1793070580, now seen corresponding path program 1 times [2019-10-22 09:02:09,950 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:09,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026757794] [2019-10-22 09:02:09,951 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:09,951 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:09,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:10,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026757794] [2019-10-22 09:02:10,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:10,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-22 09:02:10,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388977751] [2019-10-22 09:02:10,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:02:10,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:02:10,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:10,055 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 10 states. [2019-10-22 09:02:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:10,349 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2019-10-22 09:02:10,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 09:02:10,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2019-10-22 09:02:10,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:10,351 INFO L225 Difference]: With dead ends: 56 [2019-10-22 09:02:10,351 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 09:02:10,352 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:02:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 09:02:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-10-22 09:02:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 09:02:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-10-22 09:02:10,357 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 25 [2019-10-22 09:02:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:10,357 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-10-22 09:02:10,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:02:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-10-22 09:02:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:10,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:10,358 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] [2019-10-22 09:02:10,359 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1793130162, now seen corresponding path program 1 times [2019-10-22 09:02:10,360 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:10,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283339403] [2019-10-22 09:02:10,360 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,360 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:10,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283339403] [2019-10-22 09:02:10,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:10,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-22 09:02:10,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188239146] [2019-10-22 09:02:10,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 09:02:10,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 09:02:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-22 09:02:10,531 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 14 states. [2019-10-22 09:02:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:10,915 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-10-22 09:02:10,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:02:10,921 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2019-10-22 09:02:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:10,921 INFO L225 Difference]: With dead ends: 55 [2019-10-22 09:02:10,921 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 09:02:10,922 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2019-10-22 09:02:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 09:02:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2019-10-22 09:02:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-22 09:02:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-10-22 09:02:10,925 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 25 [2019-10-22 09:02:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:10,926 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-10-22 09:02:10,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 09:02:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-10-22 09:02:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:10,926 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:10,927 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] [2019-10-22 09:02:10,927 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1850388464, now seen corresponding path program 1 times [2019-10-22 09:02:10,927 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:10,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317656695] [2019-10-22 09:02:10,928 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,928 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:10,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:10,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317656695] [2019-10-22 09:02:10,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:10,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:10,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476007842] [2019-10-22 09:02:10,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:10,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:10,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:10,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:10,974 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2019-10-22 09:02:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:11,030 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2019-10-22 09:02:11,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:11,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 09:02:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:11,032 INFO L225 Difference]: With dead ends: 46 [2019-10-22 09:02:11,032 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 09:02:11,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 09:02:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-22 09:02:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 09:02:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-10-22 09:02:11,038 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 25 [2019-10-22 09:02:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:11,038 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-10-22 09:02:11,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-10-22 09:02:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:02:11,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:11,039 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] [2019-10-22 09:02:11,040 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:11,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1400103152, now seen corresponding path program 1 times [2019-10-22 09:02:11,040 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:11,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627684089] [2019-10-22 09:02:11,040 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:11,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627684089] [2019-10-22 09:02:11,158 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:11,158 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-22 09:02:11,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435537740] [2019-10-22 09:02:11,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 09:02:11,163 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:11,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 09:02:11,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:02:11,164 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 13 states. [2019-10-22 09:02:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:11,528 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2019-10-22 09:02:11,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:02:11,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2019-10-22 09:02:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:11,529 INFO L225 Difference]: With dead ends: 50 [2019-10-22 09:02:11,529 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 09:02:11,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2019-10-22 09:02:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 09:02:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2019-10-22 09:02:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 09:02:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-10-22 09:02:11,533 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 25 [2019-10-22 09:02:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:11,533 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-10-22 09:02:11,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 09:02:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-10-22 09:02:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:02:11,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:11,534 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] [2019-10-22 09:02:11,534 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:11,535 INFO L82 PathProgramCache]: Analyzing trace with hash 758876958, now seen corresponding path program 1 times [2019-10-22 09:02:11,535 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:11,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733836765] [2019-10-22 09:02:11,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:11,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733836765] [2019-10-22 09:02:11,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:11,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:02:11,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827405548] [2019-10-22 09:02:11,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:02:11,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:11,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:02:11,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:11,617 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2019-10-22 09:02:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:11,749 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2019-10-22 09:02:11,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:02:11,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2019-10-22 09:02:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:11,750 INFO L225 Difference]: With dead ends: 44 [2019-10-22 09:02:11,750 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 09:02:11,751 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2019-10-22 09:02:11,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 09:02:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-10-22 09:02:11,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 09:02:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-10-22 09:02:11,754 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2019-10-22 09:02:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:11,754 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-10-22 09:02:11,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:02:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-10-22 09:02:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:02:11,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:11,758 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] [2019-10-22 09:02:11,758 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:11,758 INFO L82 PathProgramCache]: Analyzing trace with hash -50469668, now seen corresponding path program 1 times [2019-10-22 09:02:11,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:11,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548482686] [2019-10-22 09:02:11,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:11,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:11,833 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:11,833 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:11,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:11 BoogieIcfgContainer [2019-10-22 09:02:11,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:11,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:11,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:11,893 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:11,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:07" (3/4) ... [2019-10-22 09:02:11,896 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:11,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7ba3f445-7964-449a-ac03-c31808e66dda/bin/uautomizer/witness.graphml [2019-10-22 09:02:11,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:11,974 INFO L168 Benchmark]: Toolchain (without parser) took 5409.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 940.4 MB in the beginning and 913.2 MB in the end (delta: 27.1 MB). Peak memory consumption was 224.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,975 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:11,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.58 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,976 INFO L168 Benchmark]: Boogie Preprocessor took 50.52 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,976 INFO L168 Benchmark]: RCFGBuilder took 596.42 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: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,976 INFO L168 Benchmark]: TraceAbstraction took 4029.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 920.6 MB in the end (delta: 142.3 MB). Peak memory consumption was 215.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,977 INFO L168 Benchmark]: Witness Printer took 80.25 ms. Allocated memory is still 1.2 GB. Free memory was 920.6 MB in the beginning and 913.2 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:11,984 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 585.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.58 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.52 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 596.42 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: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4029.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 920.6 MB in the end (delta: 142.3 MB). Peak memory consumption was 215.2 MB. Max. memory is 11.5 GB. * Witness Printer took 80.25 ms. Allocated memory is still 1.2 GB. Free memory was 920.6 MB in the beginning and 913.2 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={1:0}] [L903] struct list_head *dev1, *dev2; [L871] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:0}, head={1:0}] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:1}, head={1:0}] [L879] return __getMemory(size); [L904] dev1 = my_malloc(sizeof(*dev1)) [L871] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:1}, head={1:0}] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:2}, head={1:0}] [L879] return __getMemory(size); [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L890] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:2}, head={1:0}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [elem={0:2}, guard_malloc_counter={0:2}, head={1:0}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:2}, guard_malloc_counter={0:2}, head={1:0}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L896] COND FALSE !(entry==elem) VAL [elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L891] COND FALSE !(__VERIFIER_nondet_int()) [L890] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] [L6] __VERIFIER_error() VAL [elem={0:1}, guard_malloc_counter={0:2}, head={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 6 error locations. Result: UNSAFE, OverallTime: 3.9s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 1037 SDslu, 725 SDs, 0 SdLazy, 1052 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 55 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 209 ConstructedInterpolants, 0 QuantifiedInterpolants, 19201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 incorrect! Received shutdown request...