./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-06 01:21:28,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 01:21:28,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 01:21:28,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 01:21:28,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 01:21:28,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 01:21:28,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 01:21:28,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 01:21:28,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 01:21:28,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 01:21:28,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 01:21:28,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 01:21:28,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 01:21:28,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 01:21:28,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 01:21:28,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 01:21:28,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 01:21:28,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 01:21:28,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 01:21:28,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 01:21:28,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 01:21:28,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 01:21:28,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 01:21:28,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 01:21:28,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 01:21:28,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 01:21:28,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 01:21:28,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 01:21:28,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 01:21:28,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 01:21:28,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 01:21:28,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 01:21:28,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 01:21:28,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 01:21:28,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 01:21:28,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 01:21:28,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 01:21:28,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 01:21:28,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 01:21:28,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 01:21:28,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 01:21:28,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 01:21:29,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 01:21:29,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 01:21:29,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 01:21:29,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 01:21:29,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 01:21:29,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 01:21:29,018 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 01:21:29,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 01:21:29,018 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 01:21:29,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 01:21:29,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 01:21:29,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 01:21:29,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 01:21:29,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 01:21:29,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 01:21:29,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 01:21:29,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 01:21:29,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 01:21:29,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 01:21:29,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 01:21:29,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 01:21:29,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 01:21:29,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 01:21:29,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 01:21:29,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 01:21:29,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 01:21:29,022 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2021-11-06 01:21:29,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 01:21:29,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 01:21:29,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 01:21:29,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 01:21:29,375 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 01:21:29,377 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-06 01:21:29,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43c1a0e2/169c37296d244e409452cad7afedc8ae/FLAGa30c076a2 [2021-11-06 01:21:29,914 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 01:21:29,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-06 01:21:29,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43c1a0e2/169c37296d244e409452cad7afedc8ae/FLAGa30c076a2 [2021-11-06 01:21:30,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43c1a0e2/169c37296d244e409452cad7afedc8ae [2021-11-06 01:21:30,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 01:21:30,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 01:21:30,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 01:21:30,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 01:21:30,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 01:21:30,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:30,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121d02b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30, skipping insertion in model container [2021-11-06 01:21:30,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:30,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 01:21:30,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 01:21:30,542 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2021-11-06 01:21:30,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 01:21:30,730 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 01:21:30,767 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2021-11-06 01:21:30,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 01:21:30,906 INFO L208 MainTranslator]: Completed translation [2021-11-06 01:21:30,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30 WrapperNode [2021-11-06 01:21:30,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 01:21:30,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 01:21:30,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 01:21:30,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 01:21:30,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:30,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 01:21:31,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 01:21:31,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 01:21:31,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 01:21:31,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 01:21:31,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 01:21:31,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 01:21:31,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 01:21:31,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (1/1) ... [2021-11-06 01:21:31,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 01:21:31,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:31,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 01:21:31,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 01:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 01:21:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 01:21:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 01:21:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 01:21:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 01:21:32,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 01:21:32,605 INFO L299 CfgBuilder]: Removed 216 assume(true) statements. [2021-11-06 01:21:32,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:21:32 BoogieIcfgContainer [2021-11-06 01:21:32,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 01:21:32,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 01:21:32,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 01:21:32,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 01:21:32,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:21:30" (1/3) ... [2021-11-06 01:21:32,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de614b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:21:32, skipping insertion in model container [2021-11-06 01:21:32,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:21:30" (2/3) ... [2021-11-06 01:21:32,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de614b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:21:32, skipping insertion in model container [2021-11-06 01:21:32,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:21:32" (3/3) ... [2021-11-06 01:21:32,613 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2021-11-06 01:21:32,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 01:21:32,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-06 01:21:32,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 01:21:32,658 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 01:21:32,658 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-06 01:21:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 01:21:32,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:32,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:32,693 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-06 01:21:32,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:32,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498665544] [2021-11-06 01:21:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:32,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:32,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:32,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498665544] [2021-11-06 01:21:32,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498665544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:32,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:32,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 01:21:32,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524937599] [2021-11-06 01:21:32,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:32,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 01:21:32,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:32,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 01:21:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 01:21:32,864 INFO L87 Difference]: Start difference. First operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:32,915 INFO L93 Difference]: Finished difference Result 996 states and 1678 transitions. [2021-11-06 01:21:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 01:21:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-06 01:21:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:32,947 INFO L225 Difference]: With dead ends: 996 [2021-11-06 01:21:32,947 INFO L226 Difference]: Without dead ends: 465 [2021-11-06 01:21:32,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 01:21:32,957 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:32,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-06 01:21:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-06 01:21:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-06 01:21:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-06 01:21:33,024 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-06 01:21:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:33,024 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-06 01:21:33,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-06 01:21:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 01:21:33,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:33,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:33,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 01:21:33,028 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-06 01:21:33,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:33,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747346608] [2021-11-06 01:21:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:33,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:33,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:33,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747346608] [2021-11-06 01:21:33,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747346608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:33,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:33,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:21:33,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063890316] [2021-11-06 01:21:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:33,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:21:33,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:21:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:21:33,143 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:33,552 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-06 01:21:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:21:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-06 01:21:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:33,554 INFO L225 Difference]: With dead ends: 831 [2021-11-06 01:21:33,554 INFO L226 Difference]: Without dead ends: 540 [2021-11-06 01:21:33,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:33,555 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 302.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367.60ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:33,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1603 Invalid, 222 Unknown, 0 Unchecked, 6.78ms Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 367.60ms Time] [2021-11-06 01:21:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-06 01:21:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-06 01:21:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-06 01:21:33,575 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-06 01:21:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:33,576 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-06 01:21:33,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-06 01:21:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:21:33,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:33,584 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:33,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 01:21:33,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-06 01:21:33,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:33,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153447312] [2021-11-06 01:21:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:33,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:33,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:33,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21376244] [2021-11-06 01:21:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:33,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:33,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:33,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:33,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 01:21:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:33,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:21:33,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:33,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:33,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:33,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153447312] [2021-11-06 01:21:33,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:33,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21376244] [2021-11-06 01:21:33,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21376244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:33,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:33,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:21:33,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900739270] [2021-11-06 01:21:33,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:33,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:33,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:33,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:33,979 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:34,028 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-06 01:21:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:34,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:21:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:34,030 INFO L225 Difference]: With dead ends: 951 [2021-11-06 01:21:34,030 INFO L226 Difference]: Without dead ends: 488 [2021-11-06 01:21:34,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:34,032 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.92ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:34,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1161 Invalid, 72 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 39.92ms Time] [2021-11-06 01:21:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-06 01:21:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-06 01:21:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-06 01:21:34,052 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-06 01:21:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:34,053 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-06 01:21:34,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-06 01:21:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:21:34,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:34,054 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:34,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:34,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:34,267 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-06 01:21:34,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:34,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632213855] [2021-11-06 01:21:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:34,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:34,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:34,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008811817] [2021-11-06 01:21:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:34,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:34,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:34,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:34,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 01:21:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:34,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:21:34,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 01:21:34,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:34,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:34,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632213855] [2021-11-06 01:21:34,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:34,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008811817] [2021-11-06 01:21:34,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008811817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:34,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:34,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:21:34,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969598129] [2021-11-06 01:21:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:34,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:34,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:34,671 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:34,728 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-06 01:21:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:21:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:34,731 INFO L225 Difference]: With dead ends: 787 [2021-11-06 01:21:34,731 INFO L226 Difference]: Without dead ends: 508 [2021-11-06 01:21:34,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:34,734 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.30ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:34,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1161 Invalid, 72 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 49.30ms Time] [2021-11-06 01:21:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-06 01:21:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-06 01:21:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-06 01:21:34,745 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-06 01:21:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:34,745 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-06 01:21:34,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-06 01:21:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:21:34,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:34,746 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:34,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:34,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 01:21:34,965 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-06 01:21:34,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:34,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260746509] [2021-11-06 01:21:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:34,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:34,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:34,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708218270] [2021-11-06 01:21:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:34,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:34,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:35,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 01:21:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:35,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:21:35,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:35,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:35,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:35,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260746509] [2021-11-06 01:21:35,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:35,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708218270] [2021-11-06 01:21:35,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708218270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:35,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:35,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:21:35,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187562940] [2021-11-06 01:21:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:35,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:21:35,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:21:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:21:35,365 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:35,429 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-06 01:21:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:21:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:21:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:35,432 INFO L225 Difference]: With dead ends: 1086 [2021-11-06 01:21:35,433 INFO L226 Difference]: Without dead ends: 583 [2021-11-06 01:21:35,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.54ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:35,434 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.49ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:35,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 1508 Invalid, 66 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 49.49ms Time] [2021-11-06 01:21:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-06 01:21:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-06 01:21:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-06 01:21:35,445 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-06 01:21:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:35,446 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-06 01:21:35,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-06 01:21:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:21:35,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:35,447 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:35,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:35,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:35,667 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-06 01:21:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316124718] [2021-11-06 01:21:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:35,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:35,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:35,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417186264] [2021-11-06 01:21:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:35,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:35,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:35,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:35,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 01:21:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:35,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:21:35,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 01:21:35,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:35,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:35,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316124718] [2021-11-06 01:21:35,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:35,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417186264] [2021-11-06 01:21:35,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417186264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:35,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:35,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:21:35,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472232991] [2021-11-06 01:21:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:35,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:21:35,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:21:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:21:35,986 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:36,037 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-06 01:21:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:21:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:21:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:36,039 INFO L225 Difference]: With dead ends: 761 [2021-11-06 01:21:36,039 INFO L226 Difference]: Without dead ends: 480 [2021-11-06 01:21:36,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:36,040 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.60ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:36,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1362 Invalid, 66 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 36.60ms Time] [2021-11-06 01:21:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-06 01:21:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-06 01:21:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-06 01:21:36,048 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-06 01:21:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:36,049 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-06 01:21:36,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-06 01:21:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 01:21:36,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:36,050 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:36,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 01:21:36,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:36,263 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-06 01:21:36,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:36,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657715324] [2021-11-06 01:21:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:36,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:36,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:36,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485201685] [2021-11-06 01:21:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:36,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:36,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:36,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:36,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 01:21:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:36,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:21:36,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:36,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:36,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:36,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657715324] [2021-11-06 01:21:36,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:36,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485201685] [2021-11-06 01:21:36,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485201685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:36,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:36,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:21:36,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823022271] [2021-11-06 01:21:36,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:36,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:36,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:36,710 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:36,759 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-06 01:21:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 01:21:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:36,763 INFO L225 Difference]: With dead ends: 1231 [2021-11-06 01:21:36,763 INFO L226 Difference]: Without dead ends: 756 [2021-11-06 01:21:36,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:36,765 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.02ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:36,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1159 Invalid, 19 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 35.02ms Time] [2021-11-06 01:21:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-06 01:21:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-06 01:21:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-06 01:21:36,795 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-06 01:21:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:36,797 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-06 01:21:36,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-06 01:21:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 01:21:36,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:36,798 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:36,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:37,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:37,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-06 01:21:37,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:37,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986706541] [2021-11-06 01:21:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:37,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:37,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:37,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706466912] [2021-11-06 01:21:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:37,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:37,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:37,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:37,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 01:21:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:37,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 01:21:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:37,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 01:21:37,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-06 01:21:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:37,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:37,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:37,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986706541] [2021-11-06 01:21:37,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:37,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706466912] [2021-11-06 01:21:37,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706466912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:37,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:37,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 01:21:37,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565023367] [2021-11-06 01:21:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:37,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 01:21:37,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 01:21:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:37,422 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:38,015 INFO L93 Difference]: Finished difference Result 1354 states and 1745 transitions. [2021-11-06 01:21:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 01:21:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-06 01:21:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:38,017 INFO L225 Difference]: With dead ends: 1354 [2021-11-06 01:21:38,017 INFO L226 Difference]: Without dead ends: 723 [2021-11-06 01:21:38,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.79ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 01:21:38,019 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 98 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 484.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 550.82ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:38,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 2015 Invalid, 372 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 550.82ms Time] [2021-11-06 01:21:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-06 01:21:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2021-11-06 01:21:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3177304964539007) internal successors, (929), 720 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 929 transitions. [2021-11-06 01:21:38,033 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 929 transitions. Word has length 104 [2021-11-06 01:21:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:38,033 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 929 transitions. [2021-11-06 01:21:38,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 929 transitions. [2021-11-06 01:21:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:21:38,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:38,034 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:38,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-06 01:21:38,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:38,248 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash -560944154, now seen corresponding path program 1 times [2021-11-06 01:21:38,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:38,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227988605] [2021-11-06 01:21:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:38,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:38,271 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:38,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882503162] [2021-11-06 01:21:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:38,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:38,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:38,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:38,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 01:21:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:38,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:21:38,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:38,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:38,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:38,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227988605] [2021-11-06 01:21:38,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:38,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882503162] [2021-11-06 01:21:38,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882503162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:38,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:38,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:21:38,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067815071] [2021-11-06 01:21:38,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:38,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:38,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:38,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:38,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:38,657 INFO L87 Difference]: Start difference. First operand 721 states and 929 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:38,724 INFO L93 Difference]: Finished difference Result 1466 states and 1899 transitions. [2021-11-06 01:21:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 01:21:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:38,727 INFO L225 Difference]: With dead ends: 1466 [2021-11-06 01:21:38,727 INFO L226 Difference]: Without dead ends: 763 [2021-11-06 01:21:38,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:38,729 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.08ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:38,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1133 Invalid, 72 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 43.08ms Time] [2021-11-06 01:21:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-11-06 01:21:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 761. [2021-11-06 01:21:38,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 745 states have (on average 1.3006711409395972) internal successors, (969), 760 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 969 transitions. [2021-11-06 01:21:38,741 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 969 transitions. Word has length 151 [2021-11-06 01:21:38,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:38,741 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 969 transitions. [2021-11-06 01:21:38,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 969 transitions. [2021-11-06 01:21:38,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:21:38,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:38,743 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:38,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:38,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:38,954 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash 145652452, now seen corresponding path program 1 times [2021-11-06 01:21:38,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:38,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155576574] [2021-11-06 01:21:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:38,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:38,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:38,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308007801] [2021-11-06 01:21:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:38,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:38,994 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:39,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 01:21:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:39,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 01:21:39,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:39,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:39,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:39,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155576574] [2021-11-06 01:21:39,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:39,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308007801] [2021-11-06 01:21:39,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308007801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:39,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:39,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:21:39,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471232891] [2021-11-06 01:21:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:39,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:21:39,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:21:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:21:39,424 INFO L87 Difference]: Start difference. First operand 761 states and 969 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:39,488 INFO L93 Difference]: Finished difference Result 1460 states and 1864 transitions. [2021-11-06 01:21:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:21:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 01:21:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:39,490 INFO L225 Difference]: With dead ends: 1460 [2021-11-06 01:21:39,490 INFO L226 Difference]: Without dead ends: 735 [2021-11-06 01:21:39,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:39,492 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.29ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:39,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 1147 Invalid, 65 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [25 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 46.29ms Time] [2021-11-06 01:21:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-06 01:21:39,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2021-11-06 01:21:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 717 states have (on average 1.292887029288703) internal successors, (927), 732 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 927 transitions. [2021-11-06 01:21:39,504 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 927 transitions. Word has length 151 [2021-11-06 01:21:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:39,505 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 927 transitions. [2021-11-06 01:21:39,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 927 transitions. [2021-11-06 01:21:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:21:39,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:39,506 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:39,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:39,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 01:21:39,726 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:39,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1850791156, now seen corresponding path program 1 times [2021-11-06 01:21:39,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:39,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665949756] [2021-11-06 01:21:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:39,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:39,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:39,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532056361] [2021-11-06 01:21:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:39,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:39,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:39,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 01:21:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:39,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 01:21:39,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:40,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:40,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:40,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665949756] [2021-11-06 01:21:40,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:40,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532056361] [2021-11-06 01:21:40,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532056361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:40,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:40,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 01:21:40,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321871583] [2021-11-06 01:21:40,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:40,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 01:21:40,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 01:21:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:40,169 INFO L87 Difference]: Start difference. First operand 733 states and 927 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:40,270 INFO L93 Difference]: Finished difference Result 2155 states and 2732 transitions. [2021-11-06 01:21:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 01:21:40,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 01:21:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:40,275 INFO L225 Difference]: With dead ends: 2155 [2021-11-06 01:21:40,275 INFO L226 Difference]: Without dead ends: 1460 [2021-11-06 01:21:40,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:40,277 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 574 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.83ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:40,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 1714 Invalid, 93 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [36 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 73.83ms Time] [2021-11-06 01:21:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-06 01:21:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 779. [2021-11-06 01:21:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 763 states have (on average 1.2804718217562254) internal successors, (977), 778 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 977 transitions. [2021-11-06 01:21:40,297 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 977 transitions. Word has length 151 [2021-11-06 01:21:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:40,297 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 977 transitions. [2021-11-06 01:21:40,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 977 transitions. [2021-11-06 01:21:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:21:40,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:40,299 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:40,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:40,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:40,517 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1918499578, now seen corresponding path program 1 times [2021-11-06 01:21:40,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:40,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015662981] [2021-11-06 01:21:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:40,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:40,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:40,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685133294] [2021-11-06 01:21:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:40,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:40,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:40,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 01:21:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:40,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 01:21:40,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:40,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:40,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:40,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015662981] [2021-11-06 01:21:40,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:40,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685133294] [2021-11-06 01:21:40,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685133294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:40,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:40,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:21:40,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536012914] [2021-11-06 01:21:40,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:40,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:21:40,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:21:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:21:40,958 INFO L87 Difference]: Start difference. First operand 779 states and 977 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:41,003 INFO L93 Difference]: Finished difference Result 1467 states and 1851 transitions. [2021-11-06 01:21:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:21:41,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 01:21:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:41,006 INFO L225 Difference]: With dead ends: 1467 [2021-11-06 01:21:41,006 INFO L226 Difference]: Without dead ends: 715 [2021-11-06 01:21:41,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:41,007 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.19ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:41,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 1141 Invalid, 41 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 24.19ms Time] [2021-11-06 01:21:41,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-06 01:21:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2021-11-06 01:21:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 699 states have (on average 1.2861230329041489) internal successors, (899), 714 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 899 transitions. [2021-11-06 01:21:41,021 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 899 transitions. Word has length 151 [2021-11-06 01:21:41,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:41,021 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 899 transitions. [2021-11-06 01:21:41,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 899 transitions. [2021-11-06 01:21:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 01:21:41,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:41,023 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:41,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:41,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-06 01:21:41,236 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1737579534, now seen corresponding path program 1 times [2021-11-06 01:21:41,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:41,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053179655] [2021-11-06 01:21:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:41,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:41,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:41,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715493811] [2021-11-06 01:21:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:41,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:41,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:41,249 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:41,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 01:21:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:41,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:21:41,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:41,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:41,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:41,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053179655] [2021-11-06 01:21:41,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:41,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715493811] [2021-11-06 01:21:41,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715493811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:41,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:41,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:21:41,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261735576] [2021-11-06 01:21:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:41,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:41,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:41,755 INFO L87 Difference]: Start difference. First operand 715 states and 899 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:41,802 INFO L93 Difference]: Finished difference Result 1699 states and 2167 transitions. [2021-11-06 01:21:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:41,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 01:21:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:41,805 INFO L225 Difference]: With dead ends: 1699 [2021-11-06 01:21:41,805 INFO L226 Difference]: Without dead ends: 1033 [2021-11-06 01:21:41,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:41,807 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.25ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:41,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1129 Invalid, 19 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 31.25ms Time] [2021-11-06 01:21:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-06 01:21:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 876. [2021-11-06 01:21:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 860 states have (on average 1.3093023255813954) internal successors, (1126), 875 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1126 transitions. [2021-11-06 01:21:41,824 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1126 transitions. Word has length 151 [2021-11-06 01:21:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:41,824 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1126 transitions. [2021-11-06 01:21:41,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1126 transitions. [2021-11-06 01:21:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-06 01:21:41,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:41,825 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:41,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:42,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 01:21:42,045 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:42,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1603750718, now seen corresponding path program 1 times [2021-11-06 01:21:42,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:42,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905758765] [2021-11-06 01:21:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:42,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:42,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:42,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396984550] [2021-11-06 01:21:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:42,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:42,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:42,063 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:42,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 01:21:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:42,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:21:42,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:42,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:42,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:42,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905758765] [2021-11-06 01:21:42,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:42,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396984550] [2021-11-06 01:21:42,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396984550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:42,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:42,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 01:21:42,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439255435] [2021-11-06 01:21:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:42,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 01:21:42,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 01:21:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 01:21:42,588 INFO L87 Difference]: Start difference. First operand 876 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:42,856 INFO L93 Difference]: Finished difference Result 1453 states and 1865 transitions. [2021-11-06 01:21:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 01:21:42,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-06 01:21:42,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:42,861 INFO L225 Difference]: With dead ends: 1453 [2021-11-06 01:21:42,861 INFO L226 Difference]: Without dead ends: 704 [2021-11-06 01:21:42,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:42,862 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 991 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.15ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:42,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 589 Invalid, 80 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 243.15ms Time] [2021-11-06 01:21:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-06 01:21:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2021-11-06 01:21:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 688 states have (on average 1.2805232558139534) internal successors, (881), 703 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 881 transitions. [2021-11-06 01:21:42,876 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 881 transitions. Word has length 158 [2021-11-06 01:21:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:42,876 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 881 transitions. [2021-11-06 01:21:42,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 881 transitions. [2021-11-06 01:21:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 01:21:42,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:42,878 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:42,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:43,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 01:21:43,097 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash -881822645, now seen corresponding path program 1 times [2021-11-06 01:21:43,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:43,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933963864] [2021-11-06 01:21:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:43,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:43,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:43,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126682798] [2021-11-06 01:21:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:43,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:43,116 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:43,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 01:21:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:43,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 01:21:43,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 01:21:43,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 01:21:43,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:43,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933963864] [2021-11-06 01:21:43,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:43,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126682798] [2021-11-06 01:21:43,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126682798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 01:21:43,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 01:21:43,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 01:21:43,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851908070] [2021-11-06 01:21:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:43,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:43,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:43,768 INFO L87 Difference]: Start difference. First operand 704 states and 881 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:43,817 INFO L93 Difference]: Finished difference Result 1367 states and 1722 transitions. [2021-11-06 01:21:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-06 01:21:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:43,820 INFO L225 Difference]: With dead ends: 1367 [2021-11-06 01:21:43,820 INFO L226 Difference]: Without dead ends: 706 [2021-11-06 01:21:43,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 01:21:43,822 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.67ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:43,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1134 Invalid, 20 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 29.67ms Time] [2021-11-06 01:21:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-06 01:21:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-11-06 01:21:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 690 states have (on average 1.2797101449275363) internal successors, (883), 705 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 883 transitions. [2021-11-06 01:21:43,839 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 883 transitions. Word has length 165 [2021-11-06 01:21:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:43,840 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 883 transitions. [2021-11-06 01:21:43,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 883 transitions. [2021-11-06 01:21:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 01:21:43,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:43,841 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:43,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 01:21:44,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 01:21:44,062 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:44,063 INFO L85 PathProgramCache]: Analyzing trace with hash 797655390, now seen corresponding path program 1 times [2021-11-06 01:21:44,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:44,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119304930] [2021-11-06 01:21:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:44,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:44,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:44,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090218855] [2021-11-06 01:21:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:44,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:44,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:44,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 01:21:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:21:44,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 01:21:44,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:21:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 01:21:44,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 01:21:44,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 01:21:44,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:21:44,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119304930] [2021-11-06 01:21:44,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:21:44,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090218855] [2021-11-06 01:21:44,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090218855] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-06 01:21:44,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 01:21:44,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 01:21:44,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763147689] [2021-11-06 01:21:44,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 01:21:44,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 01:21:44,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:21:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 01:21:44,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:44,873 INFO L87 Difference]: Start difference. First operand 706 states and 883 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:21:44,904 INFO L93 Difference]: Finished difference Result 1367 states and 1721 transitions. [2021-11-06 01:21:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 01:21:44,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-06 01:21:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:21:44,907 INFO L225 Difference]: With dead ends: 1367 [2021-11-06 01:21:44,907 INFO L226 Difference]: Without dead ends: 708 [2021-11-06 01:21:44,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 01:21:44,908 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.05ms IncrementalHoareTripleChecker+Time [2021-11-06 01:21:44,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1132 Invalid, 22 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 19.05ms Time] [2021-11-06 01:21:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-11-06 01:21:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2021-11-06 01:21:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 692 states have (on average 1.2789017341040463) internal successors, (885), 707 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 885 transitions. [2021-11-06 01:21:44,922 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 885 transitions. Word has length 167 [2021-11-06 01:21:44,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:21:44,922 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 885 transitions. [2021-11-06 01:21:44,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:21:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 885 transitions. [2021-11-06 01:21:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-06 01:21:44,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:21:44,923 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:21:44,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-06 01:21:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:45,140 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:21:45,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:21:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1308439913, now seen corresponding path program 1 times [2021-11-06 01:21:45,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:21:45,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317111158] [2021-11-06 01:21:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:45,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:21:45,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:21:45,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081300738] [2021-11-06 01:21:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:21:45,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:21:45,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:21:45,154 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:21:45,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 01:22:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 01:22:04,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 01:22:04,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:22:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 01:22:04,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 01:22:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 01:22:04,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:22:04,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317111158] [2021-11-06 01:22:04,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:22:04,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081300738] [2021-11-06 01:22:04,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081300738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 01:22:04,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 01:22:04,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-06 01:22:04,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300127935] [2021-11-06 01:22:04,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 01:22:04,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 01:22:04,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:22:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 01:22:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 01:22:04,575 INFO L87 Difference]: Start difference. First operand 708 states and 885 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:22:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:22:04,685 INFO L93 Difference]: Finished difference Result 1380 states and 1741 transitions. [2021-11-06 01:22:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 01:22:04,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-06 01:22:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:22:04,688 INFO L225 Difference]: With dead ends: 1380 [2021-11-06 01:22:04,688 INFO L226 Difference]: Without dead ends: 716 [2021-11-06 01:22:04,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.93ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-06 01:22:04,690 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 0 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.04ms IncrementalHoareTripleChecker+Time [2021-11-06 01:22:04,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2809 Invalid, 89 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [19 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 88.04ms Time] [2021-11-06 01:22:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-06 01:22:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-11-06 01:22:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 700 states have (on average 1.2757142857142858) internal successors, (893), 715 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:22:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 893 transitions. [2021-11-06 01:22:04,705 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 893 transitions. Word has length 169 [2021-11-06 01:22:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:22:04,705 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 893 transitions. [2021-11-06 01:22:04,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:22:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 893 transitions. [2021-11-06 01:22:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-06 01:22:04,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:22:04,706 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:22:04,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 01:22:04,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 01:22:04,932 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:22:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:22:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1689406549, now seen corresponding path program 2 times [2021-11-06 01:22:04,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:22:04,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157140799] [2021-11-06 01:22:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:22:04,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:22:04,943 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:22:04,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086105861] [2021-11-06 01:22:04,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 01:22:04,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:22:04,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:22:04,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:22:04,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 01:23:19,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 01:23:19,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 01:23:20,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 01:23:20,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 01:23:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 01:23:20,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 01:23:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 01:23:20,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 01:23:20,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157140799] [2021-11-06 01:23:20,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 01:23:20,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086105861] [2021-11-06 01:23:20,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086105861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 01:23:20,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 01:23:20,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-11-06 01:23:20,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999243232] [2021-11-06 01:23:20,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 01:23:20,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-06 01:23:20,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 01:23:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-06 01:23:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-06 01:23:20,728 INFO L87 Difference]: Start difference. First operand 716 states and 893 transitions. Second operand has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:23:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 01:23:22,224 INFO L93 Difference]: Finished difference Result 2053 states and 2606 transitions. [2021-11-06 01:23:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 01:23:22,225 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-11-06 01:23:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 01:23:22,229 INFO L225 Difference]: With dead ends: 2053 [2021-11-06 01:23:22,229 INFO L226 Difference]: Without dead ends: 1384 [2021-11-06 01:23:22,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 702.91ms TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2021-11-06 01:23:22,231 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 2260 mSDsluCounter, 7685 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 807.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.99ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 868.07ms IncrementalHoareTripleChecker+Time [2021-11-06 01:23:22,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 8781 Invalid, 386 Unknown, 0 Unchecked, 6.99ms Time], IncrementalHoareTripleChecker [129 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 868.07ms Time] [2021-11-06 01:23:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-11-06 01:23:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 749. [2021-11-06 01:23:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 733 states have (on average 1.2673942701227832) internal successors, (929), 748 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:23:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 929 transitions. [2021-11-06 01:23:22,251 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 929 transitions. Word has length 177 [2021-11-06 01:23:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 01:23:22,252 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 929 transitions. [2021-11-06 01:23:22,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 01:23:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 929 transitions. [2021-11-06 01:23:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 01:23:22,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 01:23:22,253 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 01:23:22,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 01:23:22,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 01:23:22,472 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-06 01:23:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 01:23:22,472 INFO L85 PathProgramCache]: Analyzing trace with hash 726279838, now seen corresponding path program 3 times [2021-11-06 01:23:22,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 01:23:22,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489788790] [2021-11-06 01:23:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 01:23:22,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 01:23:22,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 01:23:22,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151434788] [2021-11-06 01:23:22,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 01:23:22,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 01:23:22,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 01:23:22,509 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 01:23:22,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process Killed by 15