./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c --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_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/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 d66b6d836c479d7c0f327f787d838669567676b3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:16:13,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:13,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:13,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:13,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:13,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:13,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:13,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:13,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:13,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:13,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:13,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:13,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:13,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:13,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:13,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:13,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:13,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:13,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:13,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:13,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:13,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:13,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:13,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:13,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:13,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:13,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:13,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:13,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:13,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:13,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:13,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:13,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:13,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:13,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:13,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:13,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:13,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:13,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:13,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:13,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:13,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:13,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:13,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:13,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:13,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:13,972 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:13,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:13,973 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:13,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:13,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:13,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:13,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:13,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:13,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:13,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:13,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:13,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:13,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:13,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:13,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:13,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:13,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:13,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:13,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:13,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:13,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:13,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:13,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:13,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:13,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:13,978 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_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d66b6d836c479d7c0f327f787d838669567676b3 [2020-11-28 03:16:14,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:14,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:14,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:14,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:14,305 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:14,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2020-11-28 03:16:14,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/data/575c296bf/3a73fc9f60d845bf90d913eb7f337ef3/FLAGc089c60bf [2020-11-28 03:16:14,897 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:14,898 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2020-11-28 03:16:14,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/data/575c296bf/3a73fc9f60d845bf90d913eb7f337ef3/FLAGc089c60bf [2020-11-28 03:16:15,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/data/575c296bf/3a73fc9f60d845bf90d913eb7f337ef3 [2020-11-28 03:16:15,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:15,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:15,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:15,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:15,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:15,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28845211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15, skipping insertion in model container [2020-11-28 03:16:15,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:15,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:15,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:15,550 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:15,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:15,624 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:15,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15 WrapperNode [2020-11-28 03:16:15,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:15,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:15,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:15,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:15,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:15,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:15,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:15,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:15,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... [2020-11-28 03:16:15,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:15,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:15,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:15,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:15,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/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 03:16:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:15,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:16,246 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:16,246 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-28 03:16:16,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:16 BoogieIcfgContainer [2020-11-28 03:16:16,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:16,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:16,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:16,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:16,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:15" (1/3) ... [2020-11-28 03:16:16,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195c2002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:16, skipping insertion in model container [2020-11-28 03:16:16,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:15" (2/3) ... [2020-11-28 03:16:16,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195c2002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:16, skipping insertion in model container [2020-11-28 03:16:16,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:16" (3/3) ... [2020-11-28 03:16:16,257 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound5.c [2020-11-28 03:16:16,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:16,280 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:16:16,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:16:16,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:16,332 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:16,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:16,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:16,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:16,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:16,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:16,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 03:16:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:16:16,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:16,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:16:16,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-28 03:16:16,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:16,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606897647] [2020-11-28 03:16:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:16,586 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 03:16:16,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606897647] [2020-11-28 03:16:16,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:16,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:16,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525951984] [2020-11-28 03:16:16,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:16,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:16,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:16,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:16,649 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-11-28 03:16:16,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:16,853 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-11-28 03:16:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:16,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 03:16:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:16,878 INFO L225 Difference]: With dead ends: 102 [2020-11-28 03:16:16,886 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:16:16,890 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 03:16:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:16:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-11-28 03:16:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:16:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-28 03:16:16,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-11-28 03:16:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:16,936 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-28 03:16:16,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-28 03:16:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:16,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:16,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:16,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:16,938 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 179013485, now seen corresponding path program 1 times [2020-11-28 03:16:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:16,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868068365] [2020-11-28 03:16:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:16,972 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:16,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141690716] [2020-11-28 03:16:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/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 03:16:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:17,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:16:17,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:17,115 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 03:16:17,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868068365] [2020-11-28 03:16:17,116 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:17,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141690716] [2020-11-28 03:16:17,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:17,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:17,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975665857] [2020-11-28 03:16:17,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:17,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:17,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:17,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:17,120 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-28 03:16:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:17,152 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-28 03:16:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:17,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:16:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:17,156 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:16:17,157 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:16:17,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:16:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:16:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:16:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-28 03:16:17,173 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-28 03:16:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:17,174 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-28 03:16:17,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-28 03:16:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:17,176 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:17,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:17,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:16:17,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-28 03:16:17,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:17,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378986929] [2020-11-28 03:16:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:17,470 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 03:16:17,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378986929] [2020-11-28 03:16:17,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:17,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:17,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415644872] [2020-11-28 03:16:17,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:17,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:17,473 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-28 03:16:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:17,602 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-11-28 03:16:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:17,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:16:17,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:17,604 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:16:17,605 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:16:17,605 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 03:16:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:16:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-11-28 03:16:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:16:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-28 03:16:17,620 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-11-28 03:16:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:17,621 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-28 03:16:17,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-28 03:16:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:16:17,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:17,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:17,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:16:17,624 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-28 03:16:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906594205] [2020-11-28 03:16:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:17,650 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:17,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209457908] [2020-11-28 03:16:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/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 03:16:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:17,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:16:17,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:17,764 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 03:16:17,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906594205] [2020-11-28 03:16:17,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:17,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209457908] [2020-11-28 03:16:17,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:17,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:17,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522168456] [2020-11-28 03:16:17,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:17,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:17,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:17,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:17,767 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-28 03:16:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:17,922 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-11-28 03:16:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:17,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:16:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:17,926 INFO L225 Difference]: With dead ends: 79 [2020-11-28 03:16:17,926 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:16:17,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 03:16:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:16:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-11-28 03:16:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:16:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-11-28 03:16:17,944 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-11-28 03:16:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:17,945 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-11-28 03:16:17,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-11-28 03:16:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:16:17,946 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:17,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:18,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:18,160 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2079564058, now seen corresponding path program 1 times [2020-11-28 03:16:18,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:18,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153023317] [2020-11-28 03:16:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:18,177 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:18,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374650677] [2020-11-28 03:16:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:18,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:16:18,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:18,272 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 03:16:18,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153023317] [2020-11-28 03:16:18,272 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:18,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374650677] [2020-11-28 03:16:18,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:18,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:18,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438586238] [2020-11-28 03:16:18,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:18,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:18,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:18,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:18,274 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2020-11-28 03:16:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:18,393 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-11-28 03:16:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:18,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:16:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:18,396 INFO L225 Difference]: With dead ends: 66 [2020-11-28 03:16:18,396 INFO L226 Difference]: Without dead ends: 54 [2020-11-28 03:16:18,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 03:16:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-28 03:16:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-11-28 03:16:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-28 03:16:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-11-28 03:16:18,413 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-11-28 03:16:18,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:18,414 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-11-28 03:16:18,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-11-28 03:16:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:18,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:18,415 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:18,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:18,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash 18473186, now seen corresponding path program 1 times [2020-11-28 03:16:18,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:18,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589536903] [2020-11-28 03:16:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:18,664 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:18,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327876064] [2020-11-28 03:16:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:18,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:16:18,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:18,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589536903] [2020-11-28 03:16:18,762 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:18,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327876064] [2020-11-28 03:16:18,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:18,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:16:18,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540603699] [2020-11-28 03:16:18,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:18,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:18,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:18,765 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-11-28 03:16:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:18,798 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-11-28 03:16:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:18,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:16:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:18,800 INFO L225 Difference]: With dead ends: 78 [2020-11-28 03:16:18,800 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:16:18,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:16:18,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 03:16:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:16:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-11-28 03:16:18,808 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-11-28 03:16:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:18,809 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-11-28 03:16:18,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:18,809 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-11-28 03:16:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:16:18,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:18,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:19,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:19,040 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-28 03:16:19,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:19,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414235752] [2020-11-28 03:16:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:19,061 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:19,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950149967] [2020-11-28 03:16:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:19,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:16:19,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:19,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414235752] [2020-11-28 03:16:19,166 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:19,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950149967] [2020-11-28 03:16:19,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:19,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:16:19,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990048271] [2020-11-28 03:16:19,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:19,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:19,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:19,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:19,168 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 5 states. [2020-11-28 03:16:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:19,367 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2020-11-28 03:16:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:19,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:16:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:19,369 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:16:19,369 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:16:19,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:16:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-11-28 03:16:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 03:16:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-11-28 03:16:19,381 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2020-11-28 03:16:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:19,382 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-11-28 03:16:19,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-11-28 03:16:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:16:19,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:19,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:19,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:16:19,604 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:19,604 INFO L82 PathProgramCache]: Analyzing trace with hash 293037475, now seen corresponding path program 1 times [2020-11-28 03:16:19,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:19,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821414691] [2020-11-28 03:16:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:19,626 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:19,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162138187] [2020-11-28 03:16:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:19,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:16:19,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:19,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821414691] [2020-11-28 03:16:19,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:19,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162138187] [2020-11-28 03:16:19,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:19,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:16:19,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015875315] [2020-11-28 03:16:19,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:19,750 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 6 states. [2020-11-28 03:16:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:19,800 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-11-28 03:16:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:19,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-28 03:16:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:19,802 INFO L225 Difference]: With dead ends: 78 [2020-11-28 03:16:19,803 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:16:19,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:19,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:16:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-11-28 03:16:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-28 03:16:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-11-28 03:16:19,821 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 25 [2020-11-28 03:16:19,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:19,822 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-11-28 03:16:19,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-11-28 03:16:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:16:19,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:19,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:20,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:20,052 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash 561189172, now seen corresponding path program 2 times [2020-11-28 03:16:20,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:20,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771885405] [2020-11-28 03:16:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:20,064 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:20,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840742206] [2020-11-28 03:16:20,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:20,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:16:20,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:20,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:16:20,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-28 03:16:20,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771885405] [2020-11-28 03:16:20,182 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:20,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840742206] [2020-11-28 03:16:20,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:20,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:16:20,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968384618] [2020-11-28 03:16:20,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:20,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:20,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:20,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:20,183 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 5 states. [2020-11-28 03:16:20,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:20,229 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-11-28 03:16:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:20,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-28 03:16:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:20,231 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:16:20,231 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 03:16:20,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 03:16:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-11-28 03:16:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:16:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-11-28 03:16:20,240 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 26 [2020-11-28 03:16:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:20,240 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-11-28 03:16:20,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-11-28 03:16:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:16:20,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:20,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-28 03:16:20,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:20,468 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:20,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1210116596, now seen corresponding path program 2 times [2020-11-28 03:16:20,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:20,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411922968] [2020-11-28 03:16:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:20,479 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:20,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631763168] [2020-11-28 03:16:20,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:20,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:20,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:20,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:16:20,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:20,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411922968] [2020-11-28 03:16:20,612 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:20,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631763168] [2020-11-28 03:16:20,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:20,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:16:20,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764668274] [2020-11-28 03:16:20,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:20,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:20,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:20,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:20,614 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 6 states. [2020-11-28 03:16:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:20,912 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2020-11-28 03:16:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:20,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-28 03:16:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:20,914 INFO L225 Difference]: With dead ends: 179 [2020-11-28 03:16:20,914 INFO L226 Difference]: Without dead ends: 139 [2020-11-28 03:16:20,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-28 03:16:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2020-11-28 03:16:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:16:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2020-11-28 03:16:20,933 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 26 [2020-11-28 03:16:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:20,934 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2020-11-28 03:16:20,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2020-11-28 03:16:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:16:20,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:20,935 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:21,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:16:21,152 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:21,152 INFO L82 PathProgramCache]: Analyzing trace with hash 187596510, now seen corresponding path program 1 times [2020-11-28 03:16:21,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:21,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294804794] [2020-11-28 03:16:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:21,165 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:21,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791063091] [2020-11-28 03:16:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:21,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:16:21,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:21,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294804794] [2020-11-28 03:16:21,283 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:21,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791063091] [2020-11-28 03:16:21,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:21,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:16:21,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372650320] [2020-11-28 03:16:21,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:21,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:21,285 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand 6 states. [2020-11-28 03:16:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:21,340 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2020-11-28 03:16:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:16:21,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-28 03:16:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:21,342 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:16:21,342 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:16:21,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:16:21,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:16:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-28 03:16:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:16:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2020-11-28 03:16:21,365 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 27 [2020-11-28 03:16:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:21,365 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2020-11-28 03:16:21,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2020-11-28 03:16:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:16:21,370 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:21,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:21,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:21,596 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash -716521134, now seen corresponding path program 1 times [2020-11-28 03:16:21,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:21,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604000884] [2020-11-28 03:16:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:21,607 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:21,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941776173] [2020-11-28 03:16:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:21,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 03:16:21,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:21,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604000884] [2020-11-28 03:16:21,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:21,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941776173] [2020-11-28 03:16:21,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:21,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:16:21,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352208743] [2020-11-28 03:16:21,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:21,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:21,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:21,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:21,787 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand 6 states. [2020-11-28 03:16:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:22,017 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2020-11-28 03:16:22,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:16:22,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-11-28 03:16:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:22,019 INFO L225 Difference]: With dead ends: 115 [2020-11-28 03:16:22,019 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 03:16:22,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 03:16:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-11-28 03:16:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-28 03:16:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2020-11-28 03:16:22,036 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 29 [2020-11-28 03:16:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:22,037 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2020-11-28 03:16:22,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2020-11-28 03:16:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:16:22,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:22,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:22,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:22,245 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:22,245 INFO L82 PathProgramCache]: Analyzing trace with hash -737343398, now seen corresponding path program 1 times [2020-11-28 03:16:22,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:22,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800575249] [2020-11-28 03:16:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:22,255 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:22,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767740239] [2020-11-28 03:16:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:22,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:16:22,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800575249] [2020-11-28 03:16:22,379 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:22,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767740239] [2020-11-28 03:16:22,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:22,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:16:22,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661047575] [2020-11-28 03:16:22,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:22,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:22,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:22,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:22,381 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand 7 states. [2020-11-28 03:16:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:22,430 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-11-28 03:16:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:16:22,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-11-28 03:16:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:22,431 INFO L225 Difference]: With dead ends: 116 [2020-11-28 03:16:22,431 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 03:16:22,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:16:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 03:16:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-28 03:16:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-28 03:16:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2020-11-28 03:16:22,441 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 30 [2020-11-28 03:16:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:22,441 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2020-11-28 03:16:22,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2020-11-28 03:16:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:16:22,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:22,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:22,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:16:22,668 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:22,668 INFO L82 PathProgramCache]: Analyzing trace with hash 442684688, now seen corresponding path program 1 times [2020-11-28 03:16:22,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:22,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777711082] [2020-11-28 03:16:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:22,677 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:22,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253833210] [2020-11-28 03:16:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:22,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 03:16:22,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:22,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777711082] [2020-11-28 03:16:22,870 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:22,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253833210] [2020-11-28 03:16:22,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:22,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:22,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191836181] [2020-11-28 03:16:22,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:22,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:22,875 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 7 states. [2020-11-28 03:16:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:23,148 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2020-11-28 03:16:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:23,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-28 03:16:23,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:23,150 INFO L225 Difference]: With dead ends: 112 [2020-11-28 03:16:23,150 INFO L226 Difference]: Without dead ends: 95 [2020-11-28 03:16:23,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-28 03:16:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-28 03:16:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-28 03:16:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2020-11-28 03:16:23,160 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 34 [2020-11-28 03:16:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:23,161 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2020-11-28 03:16:23,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2020-11-28 03:16:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:16:23,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:23,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-11-28 03:16:23,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:16:23,368 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1379248198, now seen corresponding path program 3 times [2020-11-28 03:16:23,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:23,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648262509] [2020-11-28 03:16:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:23,385 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:23,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145799944] [2020-11-28 03:16:23,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:23,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:16:23,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:23,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:16:23,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:23,487 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:23,488 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-28 03:16:23,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648262509] [2020-11-28 03:16:23,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:23,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145799944] [2020-11-28 03:16:23,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:23,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:23,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925602871] [2020-11-28 03:16:23,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:23,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:23,603 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand 7 states. [2020-11-28 03:16:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:23,871 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2020-11-28 03:16:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:23,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-28 03:16:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:23,873 INFO L225 Difference]: With dead ends: 113 [2020-11-28 03:16:23,873 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:16:23,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:16:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-11-28 03:16:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:16:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-11-28 03:16:23,891 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 34 [2020-11-28 03:16:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:23,891 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-11-28 03:16:23,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-11-28 03:16:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 03:16:23,892 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:23,892 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:24,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:16:24,116 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:24,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1135708876, now seen corresponding path program 2 times [2020-11-28 03:16:24,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:24,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718701998] [2020-11-28 03:16:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:24,127 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:24,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219886482] [2020-11-28 03:16:24,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:24,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:24,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:24,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:16:24,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:24,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718701998] [2020-11-28 03:16:24,269 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:24,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219886482] [2020-11-28 03:16:24,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:24,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:16:24,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869699234] [2020-11-28 03:16:24,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:24,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:24,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:24,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:24,271 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 7 states. [2020-11-28 03:16:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:24,348 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2020-11-28 03:16:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:16:24,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-11-28 03:16:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:24,350 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:16:24,351 INFO L226 Difference]: Without dead ends: 99 [2020-11-28 03:16:24,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-28 03:16:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-11-28 03:16:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-28 03:16:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-11-28 03:16:24,366 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 35 [2020-11-28 03:16:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:24,366 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-11-28 03:16:24,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-11-28 03:16:24,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 03:16:24,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:24,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:24,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:24,592 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:24,592 INFO L82 PathProgramCache]: Analyzing trace with hash -113604160, now seen corresponding path program 2 times [2020-11-28 03:16:24,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:24,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16300706] [2020-11-28 03:16:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:24,599 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:24,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15224506] [2020-11-28 03:16:24,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:24,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:24,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:24,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 03:16:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16300706] [2020-11-28 03:16:24,811 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15224506] [2020-11-28 03:16:24,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:24,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:24,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304992738] [2020-11-28 03:16:24,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:24,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:24,817 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 7 states. [2020-11-28 03:16:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:25,185 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-11-28 03:16:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:16:25,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-11-28 03:16:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:25,187 INFO L225 Difference]: With dead ends: 126 [2020-11-28 03:16:25,187 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 03:16:25,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 03:16:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2020-11-28 03:16:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-28 03:16:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2020-11-28 03:16:25,199 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 37 [2020-11-28 03:16:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:25,199 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2020-11-28 03:16:25,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2020-11-28 03:16:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 03:16:25,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:25,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:25,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:16:25,428 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:25,428 INFO L82 PathProgramCache]: Analyzing trace with hash 773213612, now seen corresponding path program 2 times [2020-11-28 03:16:25,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:25,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417425922] [2020-11-28 03:16:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:25,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:25,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829056180] [2020-11-28 03:16:25,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:25,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:25,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:16:25,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:25,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417425922] [2020-11-28 03:16:25,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:25,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829056180] [2020-11-28 03:16:25,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:25,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:25,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424277562] [2020-11-28 03:16:25,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:16:25,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:25,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:16:25,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:16:25,579 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 8 states. [2020-11-28 03:16:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:25,633 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2020-11-28 03:16:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:25,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-11-28 03:16:25,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:25,636 INFO L225 Difference]: With dead ends: 121 [2020-11-28 03:16:25,636 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 03:16:25,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 03:16:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-11-28 03:16:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-28 03:16:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2020-11-28 03:16:25,647 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 38 [2020-11-28 03:16:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:25,647 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2020-11-28 03:16:25,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:16:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2020-11-28 03:16:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-28 03:16:25,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:25,648 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:25,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 03:16:25,864 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:25,864 INFO L82 PathProgramCache]: Analyzing trace with hash 295225530, now seen corresponding path program 3 times [2020-11-28 03:16:25,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:25,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547886242] [2020-11-28 03:16:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:25,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:25,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190498103] [2020-11-28 03:16:25,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:25,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-28 03:16:25,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:25,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:16:25,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:26,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547886242] [2020-11-28 03:16:26,046 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:26,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190498103] [2020-11-28 03:16:26,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:26,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:16:26,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148991798] [2020-11-28 03:16:26,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:16:26,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:26,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:16:26,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:16:26,048 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 8 states. [2020-11-28 03:16:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:26,153 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2020-11-28 03:16:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:16:26,154 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-28 03:16:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:26,155 INFO L225 Difference]: With dead ends: 120 [2020-11-28 03:16:26,155 INFO L226 Difference]: Without dead ends: 112 [2020-11-28 03:16:26,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:16:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-28 03:16:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-28 03:16:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-28 03:16:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-11-28 03:16:26,172 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 43 [2020-11-28 03:16:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:26,174 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-11-28 03:16:26,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:16:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-11-28 03:16:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 03:16:26,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:26,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:26,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:26,396 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:26,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:26,396 INFO L82 PathProgramCache]: Analyzing trace with hash 240592444, now seen corresponding path program 1 times [2020-11-28 03:16:26,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:26,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356011935] [2020-11-28 03:16:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:26,405 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:26,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400062431] [2020-11-28 03:16:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:26,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:16:26,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:26,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356011935] [2020-11-28 03:16:26,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:26,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400062431] [2020-11-28 03:16:26,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:26,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:16:26,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607565225] [2020-11-28 03:16:26,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:16:26,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:26,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:16:26,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:26,587 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 9 states. [2020-11-28 03:16:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:26,663 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2020-11-28 03:16:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:16:26,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-11-28 03:16:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:26,668 INFO L225 Difference]: With dead ends: 133 [2020-11-28 03:16:26,668 INFO L226 Difference]: Without dead ends: 96 [2020-11-28 03:16:26,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-28 03:16:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-11-28 03:16:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-28 03:16:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-11-28 03:16:26,682 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 44 [2020-11-28 03:16:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:26,683 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-11-28 03:16:26,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:16:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-11-28 03:16:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:16:26,684 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:26,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:26,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:26,920 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:26,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1131593552, now seen corresponding path program 1 times [2020-11-28 03:16:26,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:26,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884576682] [2020-11-28 03:16:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:26,927 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:26,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727595791] [2020-11-28 03:16:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:26,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:16:26,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:16:27,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884576682] [2020-11-28 03:16:27,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:27,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727595791] [2020-11-28 03:16:27,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:27,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:27,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124233602] [2020-11-28 03:16:27,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:27,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:27,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:27,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:27,098 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 6 states. [2020-11-28 03:16:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:27,261 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2020-11-28 03:16:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:27,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-28 03:16:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:27,263 INFO L225 Difference]: With dead ends: 110 [2020-11-28 03:16:27,263 INFO L226 Difference]: Without dead ends: 89 [2020-11-28 03:16:27,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-28 03:16:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-11-28 03:16:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 03:16:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-11-28 03:16:27,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 45 [2020-11-28 03:16:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:27,276 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-11-28 03:16:27,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-11-28 03:16:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:16:27,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:27,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:27,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:27,496 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:27,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:27,496 INFO L82 PathProgramCache]: Analyzing trace with hash -487529236, now seen corresponding path program 2 times [2020-11-28 03:16:27,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:27,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577858583] [2020-11-28 03:16:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:27,505 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:27,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487735694] [2020-11-28 03:16:27,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:27,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:16:27,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:27,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-28 03:16:27,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:27,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577858583] [2020-11-28 03:16:27,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:27,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487735694] [2020-11-28 03:16:27,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:27,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-28 03:16:27,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982989243] [2020-11-28 03:16:27,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:16:27,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:16:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:16:27,956 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 12 states. [2020-11-28 03:16:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:28,492 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2020-11-28 03:16:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:16:28,492 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-11-28 03:16:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:28,493 INFO L225 Difference]: With dead ends: 89 [2020-11-28 03:16:28,493 INFO L226 Difference]: Without dead ends: 83 [2020-11-28 03:16:28,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:16:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-28 03:16:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-28 03:16:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-28 03:16:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-11-28 03:16:28,504 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 45 [2020-11-28 03:16:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:28,505 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-11-28 03:16:28,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:16:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-11-28 03:16:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:16:28,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:28,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:28,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-28 03:16:28,706 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash -544787538, now seen corresponding path program 3 times [2020-11-28 03:16:28,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:28,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509683427] [2020-11-28 03:16:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:28,712 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:28,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365251757] [2020-11-28 03:16:28,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:28,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:16:28,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:16:28,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-28 03:16:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:29,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:29,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 03:16:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:29,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509683427] [2020-11-28 03:16:29,178 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:29,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365251757] [2020-11-28 03:16:29,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:29,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-28 03:16:29,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445196801] [2020-11-28 03:16:29,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:16:29,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:29,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:16:29,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:16:29,180 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 11 states. [2020-11-28 03:16:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:29,625 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-11-28 03:16:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:16:29,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-11-28 03:16:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:29,627 INFO L225 Difference]: With dead ends: 85 [2020-11-28 03:16:29,627 INFO L226 Difference]: Without dead ends: 65 [2020-11-28 03:16:29,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:16:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-28 03:16:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-28 03:16:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:16:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-11-28 03:16:29,660 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 45 [2020-11-28 03:16:29,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:29,660 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-11-28 03:16:29,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:16:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-11-28 03:16:29,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 03:16:29,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:29,661 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:29,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-28 03:16:29,862 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:29,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1593188606, now seen corresponding path program 4 times [2020-11-28 03:16:29,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:29,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988328599] [2020-11-28 03:16:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:29,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:29,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446265027] [2020-11-28 03:16:29,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:29,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:16:29,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-28 03:16:29,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:29,999 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:30,088 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:30,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:16:30,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:30,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:30 BoogieIcfgContainer [2020-11-28 03:16:30,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:30,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:30,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:30,406 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:30,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:16" (3/4) ... [2020-11-28 03:16:30,409 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:16:30,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d58e352a-723a-4aa7-b1f5-5eba04c7d13c/bin/uautomizer/witness.graphml [2020-11-28 03:16:30,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:30,494 INFO L168 Benchmark]: Toolchain (without parser) took 15213.48 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 76.5 MB in the beginning and 132.5 MB in the end (delta: -56.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:30,495 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:30,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.15 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 81.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:30,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.85 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:30,497 INFO L168 Benchmark]: Boogie Preprocessor took 52.77 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 78.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:30,498 INFO L168 Benchmark]: RCFGBuilder took 506.22 ms. Allocated memory is still 104.9 MB. Free memory was 78.2 MB in the beginning and 62.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:30,498 INFO L168 Benchmark]: TraceAbstraction took 14155.82 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 61.9 MB in the beginning and 136.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:30,499 INFO L168 Benchmark]: Witness Printer took 87.00 ms. Allocated memory is still 182.5 MB. Free memory was 136.7 MB in the beginning and 132.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:30,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 344.15 ms. Allocated memory is still 104.9 MB. Free memory was 76.2 MB in the beginning and 81.1 MB in the end (delta: -4.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.85 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 79.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.77 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 78.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 506.22 ms. Allocated memory is still 104.9 MB. Free memory was 78.2 MB in the beginning and 62.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14155.82 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 61.9 MB in the beginning and 136.7 MB in the end (delta: -74.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 87.00 ms. Allocated memory is still 182.5 MB. Free memory was 136.7 MB in the beginning and 132.5 MB in the end (delta: 4.2 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: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND TRUE !(r >= d) VAL [counter=4] [L44] EXPR counter++ VAL [counter=5] [L44] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=5] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=5] [L44] EXPR counter++ VAL [counter=6] [L44] COND FALSE !(counter++<5) [L15] COND TRUE !(cond) VAL [counter=6] [L8] __assert_fail("0", "hard2.c", 8, "reach_error") VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.9s, OverallIterations: 24, TraceHistogramMax: 5, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 707 SDtfs, 653 SDslu, 1830 SDs, 0 SdLazy, 1606 SolverSat, 224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 514 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 172 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 691 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 167745 SizeOfPredicates, 96 NumberOfNonLiveVariables, 2645 ConjunctsInSsa, 304 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 124/424 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...