./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.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_SFH_test8-1.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 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-06 02:21:35,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 02:21:35,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 02:21:35,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 02:21:35,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 02:21:35,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 02:21:35,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 02:21:35,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 02:21:35,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 02:21:35,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 02:21:35,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 02:21:35,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 02:21:35,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 02:21:35,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 02:21:35,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 02:21:35,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 02:21:35,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 02:21:35,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 02:21:35,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 02:21:35,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 02:21:35,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 02:21:35,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 02:21:35,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 02:21:35,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 02:21:35,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 02:21:35,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 02:21:35,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 02:21:35,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 02:21:35,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 02:21:35,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 02:21:35,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 02:21:35,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 02:21:35,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 02:21:35,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 02:21:35,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 02:21:35,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 02:21:35,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 02:21:35,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 02:21:35,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 02:21:35,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 02:21:35,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 02:21:35,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 02:21:35,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 02:21:35,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 02:21:35,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 02:21:35,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 02:21:35,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 02:21:35,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 02:21:35,654 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 02:21:35,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 02:21:35,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 02:21:35,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 02:21:35,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 02:21:35,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 02:21:35,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 02:21:35,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 02:21:35,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 02:21:35,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 02:21:35,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 02:21:35,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 02:21:35,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 02:21:35,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 02:21:35,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 02:21:35,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 02:21:35,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 02:21:35,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 02:21:35,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 02:21:35,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 02:21:35,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 02:21:35,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 02:21:35,658 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 02:21:35,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 02:21:35,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 02:21:35,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 02:21:35,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2021-11-06 02:21:35,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 02:21:35,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 02:21:35,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 02:21:35,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 02:21:35,912 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 02:21:35,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-06 02:21:35,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e6b0385/8c53bf2d6e7440a39dddf7b772d6f34a/FLAG2d7000b91 [2021-11-06 02:21:36,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 02:21:36,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2021-11-06 02:21:36,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e6b0385/8c53bf2d6e7440a39dddf7b772d6f34a/FLAG2d7000b91 [2021-11-06 02:21:36,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6e6b0385/8c53bf2d6e7440a39dddf7b772d6f34a [2021-11-06 02:21:36,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 02:21:36,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 02:21:36,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 02:21:36,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 02:21:36,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 02:21:36,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:36,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2bbf22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36, skipping insertion in model container [2021-11-06 02:21:36,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:36,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 02:21:36,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 02:21:36,690 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_SFH_test8-1.i[33021,33034] [2021-11-06 02:21:36,779 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_SFH_test8-1.i[45234,45247] [2021-11-06 02:21:36,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 02:21:36,792 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 02:21:36,808 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_SFH_test8-1.i[33021,33034] [2021-11-06 02:21:36,864 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_SFH_test8-1.i[45234,45247] [2021-11-06 02:21:36,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 02:21:36,915 INFO L208 MainTranslator]: Completed translation [2021-11-06 02:21:36,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36 WrapperNode [2021-11-06 02:21:36,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 02:21:36,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 02:21:36,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 02:21:36,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 02:21:36,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:36,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 02:21:37,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 02:21:37,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 02:21:37,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 02:21:37,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 02:21:37,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 02:21:37,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 02:21:37,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 02:21:37,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (1/1) ... [2021-11-06 02:21:37,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 02:21:37,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:37,122 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 02:21:37,141 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 02:21:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 02:21:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 02:21:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 02:21:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 02:21:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 02:21:37,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 02:21:37,964 INFO L299 CfgBuilder]: Removed 136 assume(true) statements. [2021-11-06 02:21:37,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:21:37 BoogieIcfgContainer [2021-11-06 02:21:37,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 02:21:37,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 02:21:37,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 02:21:37,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 02:21:37,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:21:36" (1/3) ... [2021-11-06 02:21:37,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769bc986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:21:37, skipping insertion in model container [2021-11-06 02:21:37,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:21:36" (2/3) ... [2021-11-06 02:21:37,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769bc986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:21:37, skipping insertion in model container [2021-11-06 02:21:37,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:21:37" (3/3) ... [2021-11-06 02:21:37,971 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2021-11-06 02:21:37,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 02:21:37,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-06 02:21:38,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 02:21:38,008 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 02:21:38,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-06 02:21:38,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 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 02:21:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-06 02:21:38,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:38,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:38,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-06 02:21:38,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:38,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854367461] [2021-11-06 02:21:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:38,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:38,188 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 02:21:38,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:38,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854367461] [2021-11-06 02:21:38,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854367461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:21:38,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:21:38,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 02:21:38,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62462830] [2021-11-06 02:21:38,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:38,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 02:21:38,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 02:21:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 02:21:38,225 INFO L87 Difference]: Start difference. First operand has 302 states, 270 states have (on average 1.7925925925925925) internal successors, (484), 301 states have internal predecessors, (484), 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 02:21:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:38,260 INFO L93 Difference]: Finished difference Result 602 states and 966 transitions. [2021-11-06 02:21:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 02:21:38,262 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 02:21:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:38,270 INFO L225 Difference]: With dead ends: 602 [2021-11-06 02:21:38,270 INFO L226 Difference]: Without dead ends: 298 [2021-11-06 02:21:38,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 02:21:38,276 INFO L933 BasicCegarLoop]: 387 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, 387 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:38,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 2.86ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-06 02:21:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-06 02:21:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-06 02:21:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 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 02:21:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-06 02:21:38,310 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-06 02:21:38,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:38,310 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-06 02:21:38,310 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 02:21:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-06 02:21:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 02:21:38,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:38,312 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 02:21:38,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 02:21:38,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-06 02:21:38,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:38,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824241813] [2021-11-06 02:21:38,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:38,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:38,361 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 02:21:38,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:38,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824241813] [2021-11-06 02:21:38,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824241813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:21:38,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:21:38,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:21:38,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292747252] [2021-11-06 02:21:38,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:38,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:21:38,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:21:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:21:38,364 INFO L87 Difference]: Start difference. First operand 298 states and 383 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 02:21:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:38,590 INFO L93 Difference]: Finished difference Result 619 states and 798 transitions. [2021-11-06 02:21:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 02:21:38,591 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 02:21:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:38,593 INFO L225 Difference]: With dead ends: 619 [2021-11-06 02:21:38,593 INFO L226 Difference]: Without dead ends: 474 [2021-11-06 02:21:38,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:21:38,595 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 219 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.51ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:38,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 1003 Invalid, 161 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 201.51ms Time] [2021-11-06 02:21:38,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-06 02:21:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 300. [2021-11-06 02:21:38,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 269 states have (on average 1.4312267657992566) internal successors, (385), 299 states have internal predecessors, (385), 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 02:21:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 385 transitions. [2021-11-06 02:21:38,620 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 385 transitions. Word has length 44 [2021-11-06 02:21:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:38,620 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 385 transitions. [2021-11-06 02:21:38,621 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 02:21:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 385 transitions. [2021-11-06 02:21:38,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 02:21:38,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:38,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:38,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 02:21:38,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-06 02:21:38,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:38,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941211590] [2021-11-06 02:21:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:38,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:38,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:38,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52859651] [2021-11-06 02:21:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:38,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:38,647 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 02:21:38,648 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 02:21:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:38,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 02:21:38,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:38,930 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 02:21:38,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:21:38,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:38,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941211590] [2021-11-06 02:21:38,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:38,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52859651] [2021-11-06 02:21:38,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52859651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:21:38,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:21:38,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 02:21:38,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030092567] [2021-11-06 02:21:38,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:38,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 02:21:38,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:38,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 02:21:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:21:38,936 INFO L87 Difference]: Start difference. First operand 300 states and 385 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 02:21:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:38,991 INFO L93 Difference]: Finished difference Result 617 states and 797 transitions. [2021-11-06 02:21:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 02:21:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-06 02:21:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:38,993 INFO L225 Difference]: With dead ends: 617 [2021-11-06 02:21:38,994 INFO L226 Difference]: Without dead ends: 321 [2021-11-06 02:21:38,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 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 02:21:38,996 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 9 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.53ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:38,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 711 Invalid, 72 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 45.53ms Time] [2021-11-06 02:21:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-06 02:21:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-06 02:21:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 319 states have internal predecessors, (405), 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 02:21:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 405 transitions. [2021-11-06 02:21:39,005 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 405 transitions. Word has length 57 [2021-11-06 02:21:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:39,005 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 405 transitions. [2021-11-06 02:21:39,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 02:21:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 405 transitions. [2021-11-06 02:21:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 02:21:39,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:39,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:39,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 02:21:39,223 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 02:21:39,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1379176647, now seen corresponding path program 1 times [2021-11-06 02:21:39,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:39,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410343003] [2021-11-06 02:21:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:39,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:39,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378474157] [2021-11-06 02:21:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:39,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:39,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:39,236 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 02:21:39,237 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 02:21:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:39,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 02:21:39,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:39,430 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 02:21:39,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:21:39,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:39,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410343003] [2021-11-06 02:21:39,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:39,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378474157] [2021-11-06 02:21:39,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378474157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:21:39,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:21:39,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 02:21:39,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247449828] [2021-11-06 02:21:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:39,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 02:21:39,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:39,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 02:21:39,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 02:21:39,433 INFO L87 Difference]: Start difference. First operand 320 states and 405 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 02:21:39,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:39,492 INFO L93 Difference]: Finished difference Result 628 states and 798 transitions. [2021-11-06 02:21:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 02:21:39,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-06 02:21:39,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:39,494 INFO L225 Difference]: With dead ends: 628 [2021-11-06 02:21:39,494 INFO L226 Difference]: Without dead ends: 312 [2021-11-06 02:21:39,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:21:39,497 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 371 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.09ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:39,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 722 Invalid, 66 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 44.09ms Time] [2021-11-06 02:21:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-06 02:21:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-06 02:21:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3963636363636365) internal successors, (384), 305 states have internal predecessors, (384), 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 02:21:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2021-11-06 02:21:39,513 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 57 [2021-11-06 02:21:39,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:39,514 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2021-11-06 02:21:39,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 02:21:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2021-11-06 02:21:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 02:21:39,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:39,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:39,538 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 02:21:39,731 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 02:21:39,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:39,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-06 02:21:39,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:39,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26335872] [2021-11-06 02:21:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:39,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:39,742 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:39,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274032934] [2021-11-06 02:21:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:39,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:39,743 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 02:21:39,744 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 02:21:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:39,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 02:21:39,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:40,075 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 02:21:40,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:21:40,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:40,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26335872] [2021-11-06 02:21:40,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:40,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274032934] [2021-11-06 02:21:40,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274032934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:21:40,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:21:40,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 02:21:40,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645165310] [2021-11-06 02:21:40,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:40,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 02:21:40,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 02:21:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:21:40,078 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 02:21:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:40,142 INFO L93 Difference]: Finished difference Result 779 states and 977 transitions. [2021-11-06 02:21:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 02:21:40,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-06 02:21:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:40,144 INFO L225 Difference]: With dead ends: 779 [2021-11-06 02:21:40,144 INFO L226 Difference]: Without dead ends: 477 [2021-11-06 02:21:40,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:21:40,145 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 178 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.28ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:40,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 763 Invalid, 30 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 56.28ms Time] [2021-11-06 02:21:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-06 02:21:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-06 02:21:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3995157384987893) internal successors, (578), 443 states have internal predecessors, (578), 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 02:21:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 578 transitions. [2021-11-06 02:21:40,153 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 578 transitions. Word has length 57 [2021-11-06 02:21:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:40,154 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 578 transitions. [2021-11-06 02:21:40,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 02:21:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 578 transitions. [2021-11-06 02:21:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 02:21:40,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:40,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:40,174 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 02:21:40,374 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 02:21:40,374 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-06 02:21:40,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:40,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535526839] [2021-11-06 02:21:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:40,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:40,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:40,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508756304] [2021-11-06 02:21:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:40,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:40,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:40,392 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 02:21:40,392 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 02:21:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:40,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 02:21:40,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:40,715 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 02:21:40,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-06 02:21:40,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:40,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535526839] [2021-11-06 02:21:40,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:40,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508756304] [2021-11-06 02:21:40,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508756304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 02:21:40,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 02:21:40,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 02:21:40,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561287285] [2021-11-06 02:21:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:40,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 02:21:40,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 02:21:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:21:40,718 INFO L87 Difference]: Start difference. First operand 444 states and 578 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 02:21:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:40,735 INFO L93 Difference]: Finished difference Result 841 states and 1105 transitions. [2021-11-06 02:21:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 02:21:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-06 02:21:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:40,736 INFO L225 Difference]: With dead ends: 841 [2021-11-06 02:21:40,737 INFO L226 Difference]: Without dead ends: 445 [2021-11-06 02:21:40,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 02:21:40,738 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 0 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.08ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:40,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 9 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 10.08ms Time] [2021-11-06 02:21:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-06 02:21:40,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-11-06 02:21:40,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 414 states have (on average 1.3985507246376812) internal successors, (579), 444 states have internal predecessors, (579), 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 02:21:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 579 transitions. [2021-11-06 02:21:40,745 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 579 transitions. Word has length 64 [2021-11-06 02:21:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:40,746 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 579 transitions. [2021-11-06 02:21:40,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 02:21:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 579 transitions. [2021-11-06 02:21:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 02:21:40,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:40,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 02:21:40,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 02:21:40,963 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 02:21:40,963 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1334703729, now seen corresponding path program 1 times [2021-11-06 02:21:40,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:40,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763026098] [2021-11-06 02:21:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:40,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:40,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:40,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608030361] [2021-11-06 02:21:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:40,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:40,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:40,979 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 02:21:40,980 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 02:21:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:41,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 02:21:41,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:21:41,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 02:21:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 02:21:41,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:41,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763026098] [2021-11-06 02:21:41,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:41,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608030361] [2021-11-06 02:21:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608030361] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-06 02:21:41,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 02:21:41,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 02:21:41,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526825150] [2021-11-06 02:21:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-06 02:21:41,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 02:21:41,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 02:21:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:21:41,373 INFO L87 Difference]: Start difference. First operand 445 states and 579 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 02:21:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:41,389 INFO L93 Difference]: Finished difference Result 843 states and 1107 transitions. [2021-11-06 02:21:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 02:21:41,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-06 02:21:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:41,392 INFO L225 Difference]: With dead ends: 843 [2021-11-06 02:21:41,392 INFO L226 Difference]: Without dead ends: 446 [2021-11-06 02:21:41,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 02:21:41,393 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.87ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:41,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 741 Invalid, 10 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 9.87ms Time] [2021-11-06 02:21:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-06 02:21:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-06 02:21:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 415 states have (on average 1.3975903614457832) internal successors, (580), 445 states have internal predecessors, (580), 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 02:21:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 580 transitions. [2021-11-06 02:21:41,401 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 580 transitions. Word has length 65 [2021-11-06 02:21:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:41,402 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 580 transitions. [2021-11-06 02:21:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 02:21:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 580 transitions. [2021-11-06 02:21:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-06 02:21:41,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:41,403 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, 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 02:21:41,422 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 02:21:41,611 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 02:21:41,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1147149435, now seen corresponding path program 1 times [2021-11-06 02:21:41,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:41,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248914372] [2021-11-06 02:21:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:41,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:41,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:41,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274720320] [2021-11-06 02:21:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:41,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:41,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:41,637 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 02:21:41,638 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 02:21:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 02:21:42,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 02:21:42,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:21:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 02:21:42,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 02:21:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 02:21:42,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:21:42,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248914372] [2021-11-06 02:21:42,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:21:42,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274720320] [2021-11-06 02:21:42,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274720320] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 02:21:42,254 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 02:21:42,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-06 02:21:42,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885529410] [2021-11-06 02:21:42,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 02:21:42,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 02:21:42,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:21:42,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 02:21:42,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 02:21:42,256 INFO L87 Difference]: Start difference. First operand 446 states and 580 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 02:21:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:21:42,318 INFO L93 Difference]: Finished difference Result 848 states and 1115 transitions. [2021-11-06 02:21:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 02:21:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 66 [2021-11-06 02:21:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:21:42,320 INFO L225 Difference]: With dead ends: 848 [2021-11-06 02:21:42,320 INFO L226 Difference]: Without dead ends: 450 [2021-11-06 02:21:42,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.59ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-06 02:21:42,321 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 0 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.33ms IncrementalHoareTripleChecker+Time [2021-11-06 02:21:42,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1475 Invalid, 36 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 43.33ms Time] [2021-11-06 02:21:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-06 02:21:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-06 02:21:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 419 states have (on average 1.3937947494033414) internal successors, (584), 449 states have internal predecessors, (584), 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 02:21:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 584 transitions. [2021-11-06 02:21:42,330 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 584 transitions. Word has length 66 [2021-11-06 02:21:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:21:42,330 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 584 transitions. [2021-11-06 02:21:42,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 02:21:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 584 transitions. [2021-11-06 02:21:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-06 02:21:42,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:21:42,331 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2021-11-06 02:21:42,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 02:21:42,555 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 02:21:42,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:21:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:21:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -816430532, now seen corresponding path program 2 times [2021-11-06 02:21:42,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:21:42,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418955917] [2021-11-06 02:21:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:21:42,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:21:42,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:21:42,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014517980] [2021-11-06 02:21:42,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 02:21:42,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:21:42,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:21:42,567 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 02:21:42,568 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 02:27:23,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 02:27:23,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 02:27:23,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-06 02:27:23,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 02:27:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 02:27:23,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 02:27:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 02:27:23,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 02:27:23,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418955917] [2021-11-06 02:27:23,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 02:27:23,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014517980] [2021-11-06 02:27:23,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014517980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 02:27:23,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 02:27:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2021-11-06 02:27:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409458357] [2021-11-06 02:27:23,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-06 02:27:23,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 02:27:23,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 02:27:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 02:27:23,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-06 02:27:23,979 INFO L87 Difference]: Start difference. First operand 450 states and 584 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 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 02:27:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 02:27:24,613 INFO L93 Difference]: Finished difference Result 2822 states and 3730 transitions. [2021-11-06 02:27:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 02:27:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 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 70 [2021-11-06 02:27:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 02:27:24,620 INFO L225 Difference]: With dead ends: 2822 [2021-11-06 02:27:24,620 INFO L226 Difference]: Without dead ends: 2381 [2021-11-06 02:27:24,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 194.37ms TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-11-06 02:27:24,623 INFO L933 BasicCegarLoop]: 2068 mSDtfsCounter, 2314 mSDsluCounter, 16768 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 18836 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.02ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 387.17ms IncrementalHoareTripleChecker+Time [2021-11-06 02:27:24,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 18836 Invalid, 978 Unknown, 0 Unchecked, 24.02ms Time], IncrementalHoareTripleChecker [41 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 387.17ms Time] [2021-11-06 02:27:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-11-06 02:27:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 448. [2021-11-06 02:27:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 417 states have (on average 1.3908872901678657) internal successors, (580), 447 states have internal predecessors, (580), 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 02:27:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 580 transitions. [2021-11-06 02:27:24,638 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 580 transitions. Word has length 70 [2021-11-06 02:27:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 02:27:24,639 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 580 transitions. [2021-11-06 02:27:24,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 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 02:27:24,640 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 580 transitions. [2021-11-06 02:27:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 02:27:24,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-06 02:27:24,641 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:24,762 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 02:27:24,855 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 02:27:24,856 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 02:27:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 02:27:24,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1916561604, now seen corresponding path program 3 times [2021-11-06 02:27:24,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 02:27:24,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786810679] [2021-11-06 02:27:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 02:27:24,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 02:27:24,872 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 02:27:24,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097361301] [2021-11-06 02:27:24,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 02:27:24,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 02:27:24,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 02:27:24,876 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 02:27:24,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15