./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-01-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ea18b6ba0d977117db11fbdff34c486def646c3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-28 02:56:34,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:34,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:34,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:34,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:34,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:34,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:34,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:34,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:34,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:34,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:34,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:34,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:34,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:34,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:34,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:34,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:34,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:34,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:34,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:34,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:34,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:34,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:34,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:34,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:34,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:34,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:34,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:34,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:34,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:34,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:34,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:34,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:34,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:34,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:34,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:34,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:34,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:34,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:34,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:34,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:34,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:34,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:34,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:34,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:34,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:34,755 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:34,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:34,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:34,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:34,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:34,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:34,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:34,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:34,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:34,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:34,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:34,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:34,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:34,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:34,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:34,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:34,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:34,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:34,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:34,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:34,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:34,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:34,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:34,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:34,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:34,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ea18b6ba0d977117db11fbdff34c486def646c3 [2020-11-28 02:56:35,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:35,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:35,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:35,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:35,070 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:35,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-01-2.i [2020-11-28 02:56:35,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/data/0c8efd894/c9e89585c40a413389812ae97899f360/FLAG33f10c270 [2020-11-28 02:56:35,645 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:35,647 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/sv-benchmarks/c/forester-heap/sll-01-2.i [2020-11-28 02:56:35,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/data/0c8efd894/c9e89585c40a413389812ae97899f360/FLAG33f10c270 [2020-11-28 02:56:35,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/data/0c8efd894/c9e89585c40a413389812ae97899f360 [2020-11-28 02:56:35,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:35,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:35,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:35,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:35,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:35,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bef657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:35, skipping insertion in model container [2020-11-28 02:56:35,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:35" (1/1) ... [2020-11-28 02:56:35,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:36,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:36,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,394 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:36,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,505 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:36,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36 WrapperNode [2020-11-28 02:56:36,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:36,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:36,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:36,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:36,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:36,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:36,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:36,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/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 [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 02:56:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 02:56:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:37,351 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:37,351 INFO L298 CfgBuilder]: Removed 60 assume(true) statements. [2020-11-28 02:56:37,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37 BoogieIcfgContainer [2020-11-28 02:56:37,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:37,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:37,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:37,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:37,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:35" (1/3) ... [2020-11-28 02:56:37,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8e5536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (2/3) ... [2020-11-28 02:56:37,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8e5536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/3) ... [2020-11-28 02:56:37,362 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-11-28 02:56:37,372 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:37,376 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-11-28 02:56:37,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-11-28 02:56:37,430 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:37,430 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:37,431 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:37,431 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:37,431 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:37,431 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:37,431 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:37,431 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-11-28 02:56:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:56:37,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:37,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:37,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash 28696838, now seen corresponding path program 1 times [2020-11-28 02:56:37,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649489514] [2020-11-28 02:56:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:37,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649489514] [2020-11-28 02:56:37,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:37,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:37,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873754688] [2020-11-28 02:56:37,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:37,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:37,706 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2020-11-28 02:56:37,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:37,799 INFO L93 Difference]: Finished difference Result 223 states and 369 transitions. [2020-11-28 02:56:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:37,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 02:56:37,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:37,816 INFO L225 Difference]: With dead ends: 223 [2020-11-28 02:56:37,816 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 02:56:37,828 INFO L677 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 [2020-11-28 02:56:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 02:56:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2020-11-28 02:56:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-28 02:56:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2020-11-28 02:56:37,894 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 5 [2020-11-28 02:56:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:37,895 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2020-11-28 02:56:37,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2020-11-28 02:56:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:37,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:37,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:37,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:37,897 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:37,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:37,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1244560352, now seen corresponding path program 1 times [2020-11-28 02:56:37,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:37,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652087573] [2020-11-28 02:56:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:37,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652087573] [2020-11-28 02:56:37,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:37,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:37,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763149710] [2020-11-28 02:56:37,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:37,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:37,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:37,984 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand 3 states. [2020-11-28 02:56:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,032 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-11-28 02:56:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-28 02:56:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,034 INFO L225 Difference]: With dead ends: 94 [2020-11-28 02:56:38,035 INFO L226 Difference]: Without dead ends: 91 [2020-11-28 02:56:38,044 INFO L677 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 [2020-11-28 02:56:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-28 02:56:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-28 02:56:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-28 02:56:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-11-28 02:56:38,056 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 11 [2020-11-28 02:56:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,057 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-11-28 02:56:38,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-11-28 02:56:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:38,060 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1244619934, now seen corresponding path program 1 times [2020-11-28 02:56:38,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543272413] [2020-11-28 02:56:38,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543272413] [2020-11-28 02:56:38,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:38,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720104810] [2020-11-28 02:56:38,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:38,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:38,157 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 4 states. [2020-11-28 02:56:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,247 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-11-28 02:56:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:38,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:56:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,249 INFO L225 Difference]: With dead ends: 92 [2020-11-28 02:56:38,249 INFO L226 Difference]: Without dead ends: 89 [2020-11-28 02:56:38,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-28 02:56:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-11-28 02:56:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 02:56:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2020-11-28 02:56:38,258 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 11 [2020-11-28 02:56:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,258 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2020-11-28 02:56:38,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2020-11-28 02:56:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:38,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:38,260 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash -394307937, now seen corresponding path program 1 times [2020-11-28 02:56:38,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294797904] [2020-11-28 02:56:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294797904] [2020-11-28 02:56:38,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:38,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45417258] [2020-11-28 02:56:38,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,312 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand 3 states. [2020-11-28 02:56:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,381 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-11-28 02:56:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-28 02:56:38,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,382 INFO L225 Difference]: With dead ends: 90 [2020-11-28 02:56:38,382 INFO L226 Difference]: Without dead ends: 84 [2020-11-28 02:56:38,383 INFO L677 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 [2020-11-28 02:56:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-28 02:56:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-11-28 02:56:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-28 02:56:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-11-28 02:56:38,389 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 16 [2020-11-28 02:56:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,389 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-11-28 02:56:38,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,389 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-11-28 02:56:38,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:38,390 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:38,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,391 INFO L82 PathProgramCache]: Analyzing trace with hash 662126649, now seen corresponding path program 1 times [2020-11-28 02:56:38,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365397334] [2020-11-28 02:56:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365397334] [2020-11-28 02:56:38,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:38,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762136738] [2020-11-28 02:56:38,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:38,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:38,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:38,461 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 4 states. [2020-11-28 02:56:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,584 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2020-11-28 02:56:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:38,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 02:56:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,586 INFO L225 Difference]: With dead ends: 151 [2020-11-28 02:56:38,586 INFO L226 Difference]: Without dead ends: 127 [2020-11-28 02:56:38,587 INFO L677 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 [2020-11-28 02:56:38,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-11-28 02:56:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 79. [2020-11-28 02:56:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-28 02:56:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-11-28 02:56:38,594 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 17 [2020-11-28 02:56:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,594 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-11-28 02:56:38,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-11-28 02:56:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:56:38,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:38,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1970937841, now seen corresponding path program 1 times [2020-11-28 02:56:38,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233710699] [2020-11-28 02:56:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233710699] [2020-11-28 02:56:38,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:38,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190457324] [2020-11-28 02:56:38,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,680 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 3 states. [2020-11-28 02:56:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,711 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2020-11-28 02:56:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-28 02:56:38,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,714 INFO L225 Difference]: With dead ends: 155 [2020-11-28 02:56:38,715 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 02:56:38,715 INFO L677 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 [2020-11-28 02:56:38,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 02:56:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2020-11-28 02:56:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-28 02:56:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-11-28 02:56:38,723 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 21 [2020-11-28 02:56:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,723 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-11-28 02:56:38,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-11-28 02:56:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:38,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,731 INFO L422 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] [2020-11-28 02:56:38,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:38,731 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,736 INFO L82 PathProgramCache]: Analyzing trace with hash 968549259, now seen corresponding path program 1 times [2020-11-28 02:56:38,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020320327] [2020-11-28 02:56:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020320327] [2020-11-28 02:56:38,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:38,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465236966] [2020-11-28 02:56:38,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,805 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 3 states. [2020-11-28 02:56:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,832 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2020-11-28 02:56:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 02:56:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,833 INFO L225 Difference]: With dead ends: 82 [2020-11-28 02:56:38,834 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 02:56:38,834 INFO L677 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 [2020-11-28 02:56:38,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 02:56:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-11-28 02:56:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-11-28 02:56:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2020-11-28 02:56:38,841 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 22 [2020-11-28 02:56:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,842 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2020-11-28 02:56:38,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2020-11-28 02:56:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:38,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,844 INFO L422 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] [2020-11-28 02:56:38,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:38,844 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash -800273617, now seen corresponding path program 1 times [2020-11-28 02:56:38,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426121498] [2020-11-28 02:56:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426121498] [2020-11-28 02:56:38,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:38,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354463039] [2020-11-28 02:56:38,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,892 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand 3 states. [2020-11-28 02:56:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,908 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-11-28 02:56:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 02:56:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,910 INFO L225 Difference]: With dead ends: 83 [2020-11-28 02:56:38,911 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 02:56:38,911 INFO L677 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 [2020-11-28 02:56:38,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 02:56:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-28 02:56:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 02:56:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-11-28 02:56:38,921 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 24 [2020-11-28 02:56:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,922 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-11-28 02:56:38,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-11-28 02:56:38,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:38,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,925 INFO L422 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] [2020-11-28 02:56:38,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:38,925 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,926 INFO L82 PathProgramCache]: Analyzing trace with hash -800214035, now seen corresponding path program 1 times [2020-11-28 02:56:38,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32944708] [2020-11-28 02:56:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32944708] [2020-11-28 02:56:39,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:39,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246560676] [2020-11-28 02:56:39,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:39,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:39,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:39,015 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 4 states. [2020-11-28 02:56:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,100 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-11-28 02:56:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:39,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 02:56:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,101 INFO L225 Difference]: With dead ends: 81 [2020-11-28 02:56:39,101 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 02:56:39,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 02:56:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-28 02:56:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-28 02:56:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-11-28 02:56:39,106 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 24 [2020-11-28 02:56:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,106 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-11-28 02:56:39,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-11-28 02:56:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:39,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,107 INFO L422 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] [2020-11-28 02:56:39,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:56:39,115 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,116 INFO L82 PathProgramCache]: Analyzing trace with hash 785556314, now seen corresponding path program 1 times [2020-11-28 02:56:39,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059821806] [2020-11-28 02:56:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059821806] [2020-11-28 02:56:39,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:56:39,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288565674] [2020-11-28 02:56:39,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:39,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:39,399 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 7 states. [2020-11-28 02:56:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,982 INFO L93 Difference]: Finished difference Result 246 states and 273 transitions. [2020-11-28 02:56:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:56:39,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-28 02:56:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,986 INFO L225 Difference]: With dead ends: 246 [2020-11-28 02:56:39,986 INFO L226 Difference]: Without dead ends: 243 [2020-11-28 02:56:39,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:56:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-28 02:56:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 93. [2020-11-28 02:56:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 02:56:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2020-11-28 02:56:40,001 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 25 [2020-11-28 02:56:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,002 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2020-11-28 02:56:40,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2020-11-28 02:56:40,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:40,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,003 INFO L422 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] [2020-11-28 02:56:40,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:56:40,003 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1603204764, now seen corresponding path program 1 times [2020-11-28 02:56:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659501475] [2020-11-28 02:56:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:40,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659501475] [2020-11-28 02:56:40,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:40,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:40,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759004241] [2020-11-28 02:56:40,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:40,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:40,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:40,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:40,058 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand 4 states. [2020-11-28 02:56:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,186 INFO L93 Difference]: Finished difference Result 216 states and 246 transitions. [2020-11-28 02:56:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:40,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-28 02:56:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,188 INFO L225 Difference]: With dead ends: 216 [2020-11-28 02:56:40,188 INFO L226 Difference]: Without dead ends: 148 [2020-11-28 02:56:40,189 INFO L677 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 [2020-11-28 02:56:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-28 02:56:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 93. [2020-11-28 02:56:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 02:56:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2020-11-28 02:56:40,196 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 25 [2020-11-28 02:56:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,196 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2020-11-28 02:56:40,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2020-11-28 02:56:40,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:40,197 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,198 INFO L422 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] [2020-11-28 02:56:40,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 02:56:40,198 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,198 INFO L82 PathProgramCache]: Analyzing trace with hash -390939942, now seen corresponding path program 1 times [2020-11-28 02:56:40,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501824852] [2020-11-28 02:56:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501824852] [2020-11-28 02:56:40,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:40,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:40,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664220775] [2020-11-28 02:56:40,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:40,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:40,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:40,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:40,286 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 6 states. [2020-11-28 02:56:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,581 INFO L93 Difference]: Finished difference Result 223 states and 254 transitions. [2020-11-28 02:56:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:40,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-28 02:56:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,582 INFO L225 Difference]: With dead ends: 223 [2020-11-28 02:56:40,583 INFO L226 Difference]: Without dead ends: 169 [2020-11-28 02:56:40,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-11-28 02:56:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 100. [2020-11-28 02:56:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 02:56:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-11-28 02:56:40,590 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 25 [2020-11-28 02:56:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,590 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-11-28 02:56:40,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-11-28 02:56:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:56:40,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,596 INFO L422 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] [2020-11-28 02:56:40,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-28 02:56:40,596 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1462211504, now seen corresponding path program 1 times [2020-11-28 02:56:40,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541314471] [2020-11-28 02:56:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:56:40,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541314471] [2020-11-28 02:56:40,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:40,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:40,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365900602] [2020-11-28 02:56:40,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:40,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:40,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:40,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:40,645 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 3 states. [2020-11-28 02:56:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,723 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-11-28 02:56:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:40,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-28 02:56:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,725 INFO L225 Difference]: With dead ends: 100 [2020-11-28 02:56:40,725 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 02:56:40,725 INFO L677 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 [2020-11-28 02:56:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 02:56:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-28 02:56:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 02:56:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-11-28 02:56:40,731 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 27 [2020-11-28 02:56:40,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,732 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-11-28 02:56:40,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-11-28 02:56:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 02:56:40,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,733 INFO L422 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] [2020-11-28 02:56:40,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 02:56:40,733 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash -443744732, now seen corresponding path program 1 times [2020-11-28 02:56:40,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350616014] [2020-11-28 02:56:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:40,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350616014] [2020-11-28 02:56:40,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:40,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:56:40,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382640541] [2020-11-28 02:56:40,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:40,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:40,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:40,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:40,945 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 7 states. [2020-11-28 02:56:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:41,454 INFO L93 Difference]: Finished difference Result 245 states and 273 transitions. [2020-11-28 02:56:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:56:41,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-28 02:56:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:41,457 INFO L225 Difference]: With dead ends: 245 [2020-11-28 02:56:41,457 INFO L226 Difference]: Without dead ends: 242 [2020-11-28 02:56:41,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:56:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-28 02:56:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 100. [2020-11-28 02:56:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 02:56:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-11-28 02:56:41,464 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 28 [2020-11-28 02:56:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:41,465 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-11-28 02:56:41,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-11-28 02:56:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:41,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:41,466 INFO L422 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] [2020-11-28 02:56:41,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 02:56:41,466 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1509598737, now seen corresponding path program 1 times [2020-11-28 02:56:41,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810333457] [2020-11-28 02:56:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:41,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810333457] [2020-11-28 02:56:41,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:41,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:41,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844450555] [2020-11-28 02:56:41,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:41,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:41,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:41,541 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-11-28 02:56:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:41,825 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2020-11-28 02:56:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:56:41,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-28 02:56:41,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:41,827 INFO L225 Difference]: With dead ends: 216 [2020-11-28 02:56:41,827 INFO L226 Difference]: Without dead ends: 170 [2020-11-28 02:56:41,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:41,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-28 02:56:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 100. [2020-11-28 02:56:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 02:56:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2020-11-28 02:56:41,838 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2020-11-28 02:56:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:41,838 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2020-11-28 02:56:41,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2020-11-28 02:56:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:41,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:41,839 INFO L422 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] [2020-11-28 02:56:41,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-28 02:56:41,839 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,840 INFO L82 PathProgramCache]: Analyzing trace with hash -295839597, now seen corresponding path program 1 times [2020-11-28 02:56:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895215558] [2020-11-28 02:56:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:56:41,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895215558] [2020-11-28 02:56:41,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:41,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:41,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399913111] [2020-11-28 02:56:41,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:41,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:41,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:41,895 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 5 states. [2020-11-28 02:56:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,069 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2020-11-28 02:56:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:42,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 02:56:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,071 INFO L225 Difference]: With dead ends: 150 [2020-11-28 02:56:42,071 INFO L226 Difference]: Without dead ends: 132 [2020-11-28 02:56:42,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-28 02:56:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-11-28 02:56:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-28 02:56:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-11-28 02:56:42,078 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 30 [2020-11-28 02:56:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,079 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-11-28 02:56:42,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-11-28 02:56:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:42,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,083 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-28 02:56:42,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-28 02:56:42,083 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 303753301, now seen corresponding path program 1 times [2020-11-28 02:56:42,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015208590] [2020-11-28 02:56:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 02:56:42,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015208590] [2020-11-28 02:56:42,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:42,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528857748] [2020-11-28 02:56:42,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:42,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:42,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:42,200 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 5 states. [2020-11-28 02:56:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,361 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2020-11-28 02:56:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:42,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 02:56:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,363 INFO L225 Difference]: With dead ends: 285 [2020-11-28 02:56:42,363 INFO L226 Difference]: Without dead ends: 192 [2020-11-28 02:56:42,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-28 02:56:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 121. [2020-11-28 02:56:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-11-28 02:56:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-11-28 02:56:42,373 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 30 [2020-11-28 02:56:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,373 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-11-28 02:56:42,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-11-28 02:56:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:42,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,374 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-28 02:56:42,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-28 02:56:42,374 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash 163204691, now seen corresponding path program 1 times [2020-11-28 02:56:42,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357931135] [2020-11-28 02:56:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357931135] [2020-11-28 02:56:42,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546560290] [2020-11-28 02:56:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 02:56:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:42,612 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 02:56:42,613 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,648 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,724 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 02:56:42,725 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,735 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,735 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-11-28 02:56:42,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:56:42,769 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-28 02:56:42,770 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,794 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:56:42,799 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-28 02:56:42,799 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,808 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,808 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-11-28 02:56:42,934 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-11-28 02:56:42,940 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:42,951 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,956 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:42,956 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2020-11-28 02:56:42,958 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:43,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:43,001 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:43,001 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2020-11-28 02:56:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:43,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-11-28 02:56:43,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860546783] [2020-11-28 02:56:43,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:56:43,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:56:43,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:43,010 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 8 states. [2020-11-28 02:56:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:43,417 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2020-11-28 02:56:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:56:43,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-28 02:56:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:43,419 INFO L225 Difference]: With dead ends: 218 [2020-11-28 02:56:43,419 INFO L226 Difference]: Without dead ends: 151 [2020-11-28 02:56:43,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:56:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-28 02:56:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 122. [2020-11-28 02:56:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-28 02:56:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2020-11-28 02:56:43,435 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 30 [2020-11-28 02:56:43,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:43,435 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2020-11-28 02:56:43,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:56:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2020-11-28 02:56:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 02:56:43,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:43,436 INFO L422 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] [2020-11-28 02:56:43,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 02:56:43,665 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:43,666 INFO L82 PathProgramCache]: Analyzing trace with hash 241363572, now seen corresponding path program 1 times [2020-11-28 02:56:43,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:43,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419500163] [2020-11-28 02:56:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419500163] [2020-11-28 02:56:43,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:43,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:43,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521178219] [2020-11-28 02:56:43,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:43,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:43,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:43,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:43,720 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand 3 states. [2020-11-28 02:56:43,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:43,755 INFO L93 Difference]: Finished difference Result 240 states and 282 transitions. [2020-11-28 02:56:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:43,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-28 02:56:43,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:43,757 INFO L225 Difference]: With dead ends: 240 [2020-11-28 02:56:43,757 INFO L226 Difference]: Without dead ends: 178 [2020-11-28 02:56:43,757 INFO L677 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 [2020-11-28 02:56:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-28 02:56:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 147. [2020-11-28 02:56:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-11-28 02:56:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2020-11-28 02:56:43,766 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 33 [2020-11-28 02:56:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:43,767 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2020-11-28 02:56:43,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2020-11-28 02:56:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 02:56:43,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:43,768 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-28 02:56:43,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-28 02:56:43,770 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:43,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1703627734, now seen corresponding path program 1 times [2020-11-28 02:56:43,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:43,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171109354] [2020-11-28 02:56:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171109354] [2020-11-28 02:56:43,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563984475] [2020-11-28 02:56:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:56:43,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:43,965 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 02:56:43,965 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:43,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:43,978 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 02:56:43,978 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:43,985 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:43,985 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:43,985 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-11-28 02:56:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:56:43,999 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-28 02:56:44,000 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:44,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:56:44,023 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-11-28 02:56:44,024 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:44,036 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:44,037 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:44,037 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2020-11-28 02:56:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 02:56:44,102 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-11-28 02:56:44,105 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:44,115 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:44,123 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-11-28 02:56:44,123 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-11-28 02:56:44,125 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:44,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:44,131 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:56:44,131 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-11-28 02:56:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:56:44,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:44,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-11-28 02:56:44,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576864629] [2020-11-28 02:56:44,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:44,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:44,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:44,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:44,139 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 7 states. [2020-11-28 02:56:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:44,505 INFO L93 Difference]: Finished difference Result 274 states and 312 transitions. [2020-11-28 02:56:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:56:44,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-11-28 02:56:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:44,515 INFO L225 Difference]: With dead ends: 274 [2020-11-28 02:56:44,515 INFO L226 Difference]: Without dead ends: 240 [2020-11-28 02:56:44,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:56:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-11-28 02:56:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 176. [2020-11-28 02:56:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-28 02:56:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 211 transitions. [2020-11-28 02:56:44,527 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 211 transitions. Word has length 33 [2020-11-28 02:56:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:44,527 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 211 transitions. [2020-11-28 02:56:44,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:44,528 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 211 transitions. [2020-11-28 02:56:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 02:56:44,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:44,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-11-28 02:56:44,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:44,752 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1555502369, now seen corresponding path program 1 times [2020-11-28 02:56:44,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:44,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676802152] [2020-11-28 02:56:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:44,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:44,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:44,836 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:44,836 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:56:44,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-28 02:56:44,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:44 BoogieIcfgContainer [2020-11-28 02:56:44,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:44,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:44,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:44,909 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:44,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/4) ... [2020-11-28 02:56:44,911 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:56:44,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a82a6b9f-1640-47ba-aa4c-fae0367cf2c6/bin/uautomizer/witness.graphml [2020-11-28 02:56:44,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:44,978 INFO L168 Benchmark]: Toolchain (without parser) took 9024.75 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 67.3 MB in the beginning and 102.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,979 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:44,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.12 ms. Allocated memory is still 96.5 MB. Free memory was 67.3 MB in the beginning and 62.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.93 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 59.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,980 INFO L168 Benchmark]: Boogie Preprocessor took 42.83 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,981 INFO L168 Benchmark]: RCFGBuilder took 748.58 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 61.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,981 INFO L168 Benchmark]: TraceAbstraction took 7552.43 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 61.0 MB in the beginning and 106.0 MB in the end (delta: -45.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,982 INFO L168 Benchmark]: Witness Printer took 68.80 ms. Allocated memory is still 144.7 MB. Free memory was 106.0 MB in the beginning and 102.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:44,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 37.0 MB in the beginning and 36.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 549.12 ms. Allocated memory is still 96.5 MB. Free memory was 67.3 MB in the beginning and 62.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.93 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 59.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.83 ms. Allocated memory is still 96.5 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 748.58 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 61.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7552.43 ms. Allocated memory was 96.5 MB in the beginning and 144.7 MB in the end (delta: 48.2 MB). Free memory was 61.0 MB in the beginning and 106.0 MB in the end (delta: -45.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.80 ms. Allocated memory is still 144.7 MB. Free memory was 106.0 MB in the beginning and 102.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1002] SLL* list = malloc(sizeof(SLL)); [L1003] list->next = ((void*)0) [L1004] COND FALSE !(!(list != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1004] list->inner = malloc(sizeof(SLL)) [L1004] EXPR list->inner [L1004] list->inner->next = ((void*)0) [L1004] EXPR list->inner [L1004] list->inner->inner = ((void*)0) [L1004] EXPR list->inner [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1006] SLL* end = list; [L1009] COND FALSE !(__VERIFIER_nondet_int()) [L1019] end = ((void*)0) [L1020] end = list [L1023] COND FALSE !(!(((void*)0) != end)) [L1025] COND TRUE ((void*)0) != end [L1027] int len = 0; [L1028] EXPR end->inner [L1028] SLL* inner = end->inner; [L1029] COND TRUE ((void*)0) != inner [L1031] COND TRUE len == 0 [L1032] len = 1 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND FALSE !(!(((void*)0) == inner->inner)) [L1037] EXPR inner->next [L1037] COND FALSE !(!(((void*)0) == inner->next)) [L1038] EXPR inner->inner [L1038] inner = inner->inner [L1039] COND TRUE len == 1 [L1040] EXPR inner->inner [L1040] inner = inner->inner [L1029] COND TRUE ((void*)0) != inner [L1031] COND FALSE !(len == 0) [L1034] len = 2 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND TRUE !(((void*)0) == inner->inner) [L992] COND FALSE !(0) [L992] __assert_fail ("0", "sll-01-2.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 21, TraceHistogramMax: 2, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1749 SDtfs, 1984 SDslu, 2722 SDs, 0 SdLazy, 1347 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 792 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 567 NumberOfCodeBlocks, 567 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 119370 SizeOfPredicates, 13 NumberOfNonLiveVariables, 242 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...