./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 283b2978ab7cc2aad6d9ef5bd7f2056001c273cafa889d9023ed11b9be13f4c5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:25:05,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:25:05,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:25:05,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:25:05,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:25:05,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:25:05,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:25:05,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:25:05,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:25:05,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:25:05,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:25:05,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:25:05,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:25:05,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:25:05,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:25:05,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:25:05,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:25:05,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:25:05,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:25:05,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:25:05,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:25:05,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:25:05,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:25:05,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:25:05,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:25:05,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:25:05,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:25:05,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:25:05,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:25:05,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:25:05,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:25:05,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:25:05,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:25:05,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:25:05,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:25:05,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:25:05,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:25:05,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:25:05,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:25:05,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:25:05,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:25:05,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:25:05,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:25:05,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:25:05,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:25:05,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:25:05,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:25:05,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:25:05,348 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:25:05,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:25:05,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:25:05,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:25:05,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:25:05,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:25:05,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:25:05,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:25:05,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:25:05,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:25:05,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:25:05,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:25:05,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:25:05,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:25:05,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:25:05,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:25:05,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:25:05,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:25:05,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:25:05,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:25:05,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:25:05,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:25:05,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:25:05,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 283b2978ab7cc2aad6d9ef5bd7f2056001c273cafa889d9023ed11b9be13f4c5 [2021-11-05 19:25:05,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:25:05,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:25:05,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:25:05,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:25:05,633 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:25:05,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-05 19:25:05,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d1ca43f/3e53761e0c6340518e312d3ff43ff96f/FLAGcc3aa9fa5 [2021-11-05 19:25:06,341 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:25:06,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-05 19:25:06,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d1ca43f/3e53761e0c6340518e312d3ff43ff96f/FLAGcc3aa9fa5 [2021-11-05 19:25:06,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d1ca43f/3e53761e0c6340518e312d3ff43ff96f [2021-11-05 19:25:06,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:25:06,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:25:06,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:25:06,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:25:06,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:25:06,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:25:06" (1/1) ... [2021-11-05 19:25:06,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf9ea76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:06, skipping insertion in model container [2021-11-05 19:25:06,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:25:06" (1/1) ... [2021-11-05 19:25:06,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:25:06,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:25:08,262 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319471,319484] [2021-11-05 19:25:08,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:25:08,377 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:25:08,665 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319471,319484] [2021-11-05 19:25:08,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:25:08,854 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:25:08,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08 WrapperNode [2021-11-05 19:25:08,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:25:08,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:25:08,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:25:08,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:25:08,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:08,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:25:09,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:25:09,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:25:09,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:25:09,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:25:09,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:25:09,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:25:09,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:25:09,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (1/1) ... [2021-11-05 19:25:09,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:25:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:25:09,824 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) [2021-11-05 19:25:09,845 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 [2021-11-05 19:25:09,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:25:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:25:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:25:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:25:09,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-05 19:25:09,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:25:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:25:09,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:25:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:25:20,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:25:20,162 INFO L299 CfgBuilder]: Removed 3283 assume(true) statements. [2021-11-05 19:25:20,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:25:20 BoogieIcfgContainer [2021-11-05 19:25:20,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:25:20,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:25:20,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:25:20,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:25:20,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:25:06" (1/3) ... [2021-11-05 19:25:20,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37235010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:25:20, skipping insertion in model container [2021-11-05 19:25:20,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:25:08" (2/3) ... [2021-11-05 19:25:20,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37235010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:25:20, skipping insertion in model container [2021-11-05 19:25:20,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:25:20" (3/3) ... [2021-11-05 19:25:20,174 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-05 19:25:20,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:25:20,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-05 19:25:20,223 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:25:20,228 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 [2021-11-05 19:25:20,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-05 19:25:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 2925 states, 2907 states have (on average 1.370485036119711) internal successors, (3984), 2924 states have internal predecessors, (3984), 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) [2021-11-05 19:25:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 19:25:20,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:20,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:20,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:20,308 INFO L85 PathProgramCache]: Analyzing trace with hash 987291868, now seen corresponding path program 1 times [2021-11-05 19:25:20,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:20,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387260601] [2021-11-05 19:25:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:20,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:25:20,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:20,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387260601] [2021-11-05 19:25:20,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387260601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:20,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:20,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:25:20,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630589249] [2021-11-05 19:25:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:20,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:25:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:25:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:25:20,858 INFO L87 Difference]: Start difference. First operand has 2925 states, 2907 states have (on average 1.370485036119711) internal successors, (3984), 2924 states have internal predecessors, (3984), 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 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2021-11-05 19:25:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:20,972 INFO L93 Difference]: Finished difference Result 5846 states and 7963 transitions. [2021-11-05 19:25:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:25:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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 131 [2021-11-05 19:25:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:20,995 INFO L225 Difference]: With dead ends: 5846 [2021-11-05 19:25:20,996 INFO L226 Difference]: Without dead ends: 2870 [2021-11-05 19:25:21,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:25:21,009 INFO L933 BasicCegarLoop]: 3896 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, 3896 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:21,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3896 Invalid, 0 Unknown, 0 Unchecked, 9.68ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:25:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-11-05 19:25:21,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-11-05 19:25:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2853 states have (on average 1.3284262180161235) internal successors, (3790), 2869 states have internal predecessors, (3790), 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) [2021-11-05 19:25:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3790 transitions. [2021-11-05 19:25:21,120 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3790 transitions. Word has length 131 [2021-11-05 19:25:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:21,120 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 3790 transitions. [2021-11-05 19:25:21,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2021-11-05 19:25:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3790 transitions. [2021-11-05 19:25:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 19:25:21,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:21,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:21,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:25:21,130 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1408896448, now seen corresponding path program 1 times [2021-11-05 19:25:21,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:21,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002003080] [2021-11-05 19:25:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:21,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:25:21,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:21,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002003080] [2021-11-05 19:25:21,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002003080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:21,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:21,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:25:21,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373735292] [2021-11-05 19:25:21,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:21,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:21,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:21,358 INFO L87 Difference]: Start difference. First operand 2870 states and 3790 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-11-05 19:25:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:21,669 INFO L93 Difference]: Finished difference Result 7596 states and 10064 transitions. [2021-11-05 19:25:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2021-11-05 19:25:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:21,685 INFO L225 Difference]: With dead ends: 7596 [2021-11-05 19:25:21,686 INFO L226 Difference]: Without dead ends: 4821 [2021-11-05 19:25:21,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:21,696 INFO L933 BasicCegarLoop]: 3789 mSDtfsCounter, 2747 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 7315 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.50ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.78ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:21,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 7315 Invalid, 98 Unknown, 0 Unchecked, 14.50ms Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 202.78ms Time] [2021-11-05 19:25:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2021-11-05 19:25:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4631. [2021-11-05 19:25:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4631 states, 4614 states have (on average 1.3363675769397485) internal successors, (6166), 4630 states have internal predecessors, (6166), 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) [2021-11-05 19:25:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 6166 transitions. [2021-11-05 19:25:21,795 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 6166 transitions. Word has length 131 [2021-11-05 19:25:21,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:21,797 INFO L470 AbstractCegarLoop]: Abstraction has 4631 states and 6166 transitions. [2021-11-05 19:25:21,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2021-11-05 19:25:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 6166 transitions. [2021-11-05 19:25:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 19:25:21,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:21,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:21,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:25:21,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1891957568, now seen corresponding path program 1 times [2021-11-05 19:25:21,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:21,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009661749] [2021-11-05 19:25:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:21,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:25:21,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:21,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009661749] [2021-11-05 19:25:21,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009661749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:21,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:21,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:25:21,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771330268] [2021-11-05 19:25:21,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:21,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:21,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:21,986 INFO L87 Difference]: Start difference. First operand 4631 states and 6166 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-05 19:25:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:22,169 INFO L93 Difference]: Finished difference Result 10230 states and 13707 transitions. [2021-11-05 19:25:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:22,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 143 [2021-11-05 19:25:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:22,185 INFO L225 Difference]: With dead ends: 10230 [2021-11-05 19:25:22,185 INFO L226 Difference]: Without dead ends: 5694 [2021-11-05 19:25:22,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:22,197 INFO L933 BasicCegarLoop]: 4806 mSDtfsCounter, 1342 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 8465 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.53ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:22,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 8465 Invalid, 29 Unknown, 0 Unchecked, 7.94ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 80.53ms Time] [2021-11-05 19:25:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2021-11-05 19:25:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5672. [2021-11-05 19:25:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5672 states, 5655 states have (on average 1.3480106100795757) internal successors, (7623), 5671 states have internal predecessors, (7623), 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) [2021-11-05 19:25:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5672 states to 5672 states and 7623 transitions. [2021-11-05 19:25:22,303 INFO L78 Accepts]: Start accepts. Automaton has 5672 states and 7623 transitions. Word has length 143 [2021-11-05 19:25:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:22,305 INFO L470 AbstractCegarLoop]: Abstraction has 5672 states and 7623 transitions. [2021-11-05 19:25:22,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-05 19:25:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5672 states and 7623 transitions. [2021-11-05 19:25:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-05 19:25:22,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:22,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:22,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:25:22,310 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1069620689, now seen corresponding path program 1 times [2021-11-05 19:25:22,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:22,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162329563] [2021-11-05 19:25:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:22,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:25:22,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:22,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162329563] [2021-11-05 19:25:22,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162329563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:22,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:22,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:25:22,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709357171] [2021-11-05 19:25:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:22,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:25:22,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:25:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:25:22,568 INFO L87 Difference]: Start difference. First operand 5672 states and 7623 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2021-11-05 19:25:24,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:25:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:24,832 INFO L93 Difference]: Finished difference Result 11261 states and 15158 transitions. [2021-11-05 19:25:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:25:24,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 186 [2021-11-05 19:25:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:24,847 INFO L225 Difference]: With dead ends: 11261 [2021-11-05 19:25:24,847 INFO L226 Difference]: Without dead ends: 5672 [2021-11-05 19:25:24,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:25:24,854 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 3 mSDsluCounter, 7570 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2044.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11358 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2170.39ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:24,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 11358 Invalid, 12 Unknown, 0 Unchecked, 7.00ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2170.39ms Time] [2021-11-05 19:25:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-11-05 19:25:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 5672. [2021-11-05 19:25:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5672 states, 5655 states have (on average 1.3465959328028294) internal successors, (7615), 5671 states have internal predecessors, (7615), 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) [2021-11-05 19:25:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5672 states to 5672 states and 7615 transitions. [2021-11-05 19:25:24,943 INFO L78 Accepts]: Start accepts. Automaton has 5672 states and 7615 transitions. Word has length 186 [2021-11-05 19:25:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:24,944 INFO L470 AbstractCegarLoop]: Abstraction has 5672 states and 7615 transitions. [2021-11-05 19:25:24,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2021-11-05 19:25:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5672 states and 7615 transitions. [2021-11-05 19:25:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-05 19:25:24,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:24,948 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:24,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:25:24,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1320406279, now seen corresponding path program 1 times [2021-11-05 19:25:24,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:24,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065194932] [2021-11-05 19:25:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:24,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:25,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:25,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065194932] [2021-11-05 19:25:25,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065194932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:25,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:25,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:25:25,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145376625] [2021-11-05 19:25:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:25,213 INFO L87 Difference]: Start difference. First operand 5672 states and 7615 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2021-11-05 19:25:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:25,345 INFO L93 Difference]: Finished difference Result 5672 states and 7615 transitions. [2021-11-05 19:25:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 193 [2021-11-05 19:25:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:25,360 INFO L225 Difference]: With dead ends: 5672 [2021-11-05 19:25:25,360 INFO L226 Difference]: Without dead ends: 5654 [2021-11-05 19:25:25,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:25,362 INFO L933 BasicCegarLoop]: 3761 mSDtfsCounter, 2440 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.94ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:25,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 4853 Invalid, 68 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [26 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 73.94ms Time] [2021-11-05 19:25:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-11-05 19:25:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5654. [2021-11-05 19:25:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5646 states have (on average 1.3439603258944386) internal successors, (7588), 5653 states have internal predecessors, (7588), 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) [2021-11-05 19:25:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 7588 transitions. [2021-11-05 19:25:25,463 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 7588 transitions. Word has length 193 [2021-11-05 19:25:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:25,464 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 7588 transitions. [2021-11-05 19:25:25,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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) [2021-11-05 19:25:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 7588 transitions. [2021-11-05 19:25:25,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-05 19:25:25,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:25,471 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:25,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:25:25,471 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1667876894, now seen corresponding path program 1 times [2021-11-05 19:25:25,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:25,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366882593] [2021-11-05 19:25:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:25,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:25,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:25,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366882593] [2021-11-05 19:25:25,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366882593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:25,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:25,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:25:25,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507852041] [2021-11-05 19:25:25,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:25,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:25,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:25,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:25,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:25,672 INFO L87 Difference]: Start difference. First operand 5654 states and 7588 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-05 19:25:27,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:25:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:28,219 INFO L93 Difference]: Finished difference Result 13377 states and 18028 transitions. [2021-11-05 19:25:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:28,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 211 [2021-11-05 19:25:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:28,239 INFO L225 Difference]: With dead ends: 13377 [2021-11-05 19:25:28,239 INFO L226 Difference]: Without dead ends: 7818 [2021-11-05 19:25:28,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:28,249 INFO L933 BasicCegarLoop]: 6307 mSDtfsCounter, 2762 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2198.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 9818 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.17ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2372.56ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:28,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2762 Valid, 9818 Invalid, 154 Unknown, 0 Unchecked, 8.17ms Time], IncrementalHoareTripleChecker [44 Valid, 109 Invalid, 1 Unknown, 0 Unchecked, 2372.56ms Time] [2021-11-05 19:25:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2021-11-05 19:25:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7646. [2021-11-05 19:25:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7646 states, 7638 states have (on average 1.3464257659073056) internal successors, (10284), 7645 states have internal predecessors, (10284), 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) [2021-11-05 19:25:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7646 states to 7646 states and 10284 transitions. [2021-11-05 19:25:28,384 INFO L78 Accepts]: Start accepts. Automaton has 7646 states and 10284 transitions. Word has length 211 [2021-11-05 19:25:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:28,385 INFO L470 AbstractCegarLoop]: Abstraction has 7646 states and 10284 transitions. [2021-11-05 19:25:28,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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) [2021-11-05 19:25:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7646 states and 10284 transitions. [2021-11-05 19:25:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-05 19:25:28,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:28,394 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:28,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:25:28,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 915690416, now seen corresponding path program 1 times [2021-11-05 19:25:28,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:28,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728071223] [2021-11-05 19:25:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:28,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 19:25:28,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:28,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728071223] [2021-11-05 19:25:28,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728071223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:28,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:28,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 19:25:28,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414136434] [2021-11-05 19:25:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:28,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:25:28,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:25:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:25:28,945 INFO L87 Difference]: Start difference. First operand 7646 states and 10284 transitions. Second operand has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 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) [2021-11-05 19:25:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:30,647 INFO L93 Difference]: Finished difference Result 33670 states and 45517 transitions. [2021-11-05 19:25:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 19:25:30,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 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 231 [2021-11-05 19:25:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:30,709 INFO L225 Difference]: With dead ends: 33670 [2021-11-05 19:25:30,709 INFO L226 Difference]: Without dead ends: 26119 [2021-11-05 19:25:30,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 268.54ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-05 19:25:30,729 INFO L933 BasicCegarLoop]: 8436 mSDtfsCounter, 27511 mSDsluCounter, 40229 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27511 SdHoareTripleChecker+Valid, 48665 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 557.21ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:30,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27511 Valid, 48665 Invalid, 345 Unknown, 0 Unchecked, 65.72ms Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 557.21ms Time] [2021-11-05 19:25:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26119 states. [2021-11-05 19:25:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26119 to 7658. [2021-11-05 19:25:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7658 states, 7650 states have (on average 1.3458823529411765) internal successors, (10296), 7657 states have internal predecessors, (10296), 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) [2021-11-05 19:25:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 10296 transitions. [2021-11-05 19:25:31,109 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 10296 transitions. Word has length 231 [2021-11-05 19:25:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:31,109 INFO L470 AbstractCegarLoop]: Abstraction has 7658 states and 10296 transitions. [2021-11-05 19:25:31,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 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) [2021-11-05 19:25:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 10296 transitions. [2021-11-05 19:25:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 19:25:31,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:31,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:31,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:25:31,118 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash 18451097, now seen corresponding path program 1 times [2021-11-05 19:25:31,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:31,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222924572] [2021-11-05 19:25:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:31,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:31,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:31,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222924572] [2021-11-05 19:25:31,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222924572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:31,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:31,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:25:31,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374716012] [2021-11-05 19:25:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:31,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:31,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:31,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:31,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:31,324 INFO L87 Difference]: Start difference. First operand 7658 states and 10296 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-11-05 19:25:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:31,796 INFO L93 Difference]: Finished difference Result 18632 states and 25148 transitions. [2021-11-05 19:25:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 233 [2021-11-05 19:25:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:31,816 INFO L225 Difference]: With dead ends: 18632 [2021-11-05 19:25:31,817 INFO L226 Difference]: Without dead ends: 11069 [2021-11-05 19:25:31,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:31,830 INFO L933 BasicCegarLoop]: 5517 mSDtfsCounter, 3555 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3555 SdHoareTripleChecker+Valid, 7433 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.28ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:31,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3555 Valid, 7433 Invalid, 138 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [54 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 103.28ms Time] [2021-11-05 19:25:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11069 states. [2021-11-05 19:25:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11069 to 7748. [2021-11-05 19:25:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7748 states, 7740 states have (on average 1.341860465116279) internal successors, (10386), 7747 states have internal predecessors, (10386), 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) [2021-11-05 19:25:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 10386 transitions. [2021-11-05 19:25:32,130 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 10386 transitions. Word has length 233 [2021-11-05 19:25:32,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:32,131 INFO L470 AbstractCegarLoop]: Abstraction has 7748 states and 10386 transitions. [2021-11-05 19:25:32,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-11-05 19:25:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 10386 transitions. [2021-11-05 19:25:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 19:25:32,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:32,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:32,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 19:25:32,139 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1618463839, now seen corresponding path program 1 times [2021-11-05 19:25:32,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:32,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834742873] [2021-11-05 19:25:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:32,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:32,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:32,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834742873] [2021-11-05 19:25:32,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834742873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:32,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:32,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:25:32,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778347721] [2021-11-05 19:25:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:32,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:32,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:32,325 INFO L87 Difference]: Start difference. First operand 7748 states and 10386 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-11-05 19:25:32,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:32,681 INFO L93 Difference]: Finished difference Result 15401 states and 20668 transitions. [2021-11-05 19:25:32,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:32,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 233 [2021-11-05 19:25:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:32,695 INFO L225 Difference]: With dead ends: 15401 [2021-11-05 19:25:32,695 INFO L226 Difference]: Without dead ends: 7748 [2021-11-05 19:25:32,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:32,707 INFO L933 BasicCegarLoop]: 3756 mSDtfsCounter, 0 mSDsluCounter, 3728 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7484 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.17ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:32,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7484 Invalid, 47 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 76.17ms Time] [2021-11-05 19:25:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2021-11-05 19:25:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 7748. [2021-11-05 19:25:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7748 states, 7740 states have (on average 1.3396640826873385) internal successors, (10369), 7747 states have internal predecessors, (10369), 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) [2021-11-05 19:25:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7748 states to 7748 states and 10369 transitions. [2021-11-05 19:25:32,970 INFO L78 Accepts]: Start accepts. Automaton has 7748 states and 10369 transitions. Word has length 233 [2021-11-05 19:25:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:32,970 INFO L470 AbstractCegarLoop]: Abstraction has 7748 states and 10369 transitions. [2021-11-05 19:25:32,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2021-11-05 19:25:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7748 states and 10369 transitions. [2021-11-05 19:25:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 19:25:32,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:32,979 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:32,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 19:25:32,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 186974495, now seen corresponding path program 1 times [2021-11-05 19:25:32,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:32,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493318030] [2021-11-05 19:25:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:32,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:33,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:33,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493318030] [2021-11-05 19:25:33,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493318030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:33,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:33,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:25:33,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677971075] [2021-11-05 19:25:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:33,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:25:33,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:25:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:25:33,280 INFO L87 Difference]: Start difference. First operand 7748 states and 10369 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2021-11-05 19:25:35,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:25:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:37,821 INFO L93 Difference]: Finished difference Result 15419 states and 20661 transitions. [2021-11-05 19:25:37,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:25:37,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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 233 [2021-11-05 19:25:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:37,834 INFO L225 Difference]: With dead ends: 15419 [2021-11-05 19:25:37,834 INFO L226 Difference]: Without dead ends: 7766 [2021-11-05 19:25:37,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:25:37,844 INFO L933 BasicCegarLoop]: 3757 mSDtfsCounter, 3 mSDsluCounter, 6792 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3841.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10549 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.61ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4183.44ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:37,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10549 Invalid, 743 Unknown, 0 Unchecked, 10.61ms Time], IncrementalHoareTripleChecker [6 Valid, 736 Invalid, 1 Unknown, 0 Unchecked, 4183.44ms Time] [2021-11-05 19:25:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2021-11-05 19:25:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7766. [2021-11-05 19:25:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7758 states have (on average 1.3388759989688064) internal successors, (10387), 7765 states have internal predecessors, (10387), 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) [2021-11-05 19:25:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 10387 transitions. [2021-11-05 19:25:38,083 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 10387 transitions. Word has length 233 [2021-11-05 19:25:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:38,084 INFO L470 AbstractCegarLoop]: Abstraction has 7766 states and 10387 transitions. [2021-11-05 19:25:38,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2021-11-05 19:25:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 10387 transitions. [2021-11-05 19:25:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 19:25:38,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:38,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:38,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 19:25:38,093 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:38,093 INFO L85 PathProgramCache]: Analyzing trace with hash -230422111, now seen corresponding path program 1 times [2021-11-05 19:25:38,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:38,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135033847] [2021-11-05 19:25:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:38,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:25:38,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:38,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135033847] [2021-11-05 19:25:38,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135033847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:25:38,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492420575] [2021-11-05 19:25:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:38,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:25:38,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:25:38,677 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) [2021-11-05 19:25:38,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 19:25:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:39,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 4309 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 19:25:39,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:25:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:40,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:25:40,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492420575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:40,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:25:40,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-05 19:25:40,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480494545] [2021-11-05 19:25:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:40,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:25:40,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:25:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-05 19:25:40,085 INFO L87 Difference]: Start difference. First operand 7766 states and 10387 transitions. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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) [2021-11-05 19:25:41,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:41,201 INFO L93 Difference]: Finished difference Result 26930 states and 36219 transitions. [2021-11-05 19:25:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:25:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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 233 [2021-11-05 19:25:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:41,238 INFO L225 Difference]: With dead ends: 26930 [2021-11-05 19:25:41,239 INFO L226 Difference]: Without dead ends: 19259 [2021-11-05 19:25:41,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 182.35ms TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-05 19:25:41,254 INFO L933 BasicCegarLoop]: 7610 mSDtfsCounter, 11317 mSDsluCounter, 15372 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11317 SdHoareTripleChecker+Valid, 22982 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.77ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.95ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:41,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11317 Valid, 22982 Invalid, 218 Unknown, 0 Unchecked, 21.77ms Time], IncrementalHoareTripleChecker [65 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 303.95ms Time] [2021-11-05 19:25:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19259 states. [2021-11-05 19:25:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19259 to 7784. [2021-11-05 19:25:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 7776 states have (on average 1.3380915637860082) internal successors, (10405), 7783 states have internal predecessors, (10405), 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) [2021-11-05 19:25:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 10405 transitions. [2021-11-05 19:25:41,596 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 10405 transitions. Word has length 233 [2021-11-05 19:25:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:41,596 INFO L470 AbstractCegarLoop]: Abstraction has 7784 states and 10405 transitions. [2021-11-05 19:25:41,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 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) [2021-11-05 19:25:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 10405 transitions. [2021-11-05 19:25:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-05 19:25:41,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:41,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:41,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 19:25:41,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-05 19:25:41,828 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:41,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1276818332, now seen corresponding path program 1 times [2021-11-05 19:25:41,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:41,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132247066] [2021-11-05 19:25:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:41,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 19:25:42,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:42,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132247066] [2021-11-05 19:25:42,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132247066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:42,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:25:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849275362] [2021-11-05 19:25:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:25:42,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:25:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:25:42,205 INFO L87 Difference]: Start difference. First operand 7784 states and 10405 transitions. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2021-11-05 19:25:43,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:43,843 INFO L93 Difference]: Finished difference Result 37344 states and 50201 transitions. [2021-11-05 19:25:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:25:43,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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 243 [2021-11-05 19:25:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:43,892 INFO L225 Difference]: With dead ends: 37344 [2021-11-05 19:25:43,892 INFO L226 Difference]: Without dead ends: 29655 [2021-11-05 19:25:43,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 56.87ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:25:43,913 INFO L933 BasicCegarLoop]: 7426 mSDtfsCounter, 18040 mSDsluCounter, 16238 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 340.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18040 SdHoareTripleChecker+Valid, 23664 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.15ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 385.14ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:43,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18040 Valid, 23664 Invalid, 204 Unknown, 0 Unchecked, 28.15ms Time], IncrementalHoareTripleChecker [17 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 385.14ms Time] [2021-11-05 19:25:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29655 states. [2021-11-05 19:25:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29655 to 7793. [2021-11-05 19:25:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7785 states have (on average 1.3377007064868336) internal successors, (10414), 7792 states have internal predecessors, (10414), 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) [2021-11-05 19:25:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 10414 transitions. [2021-11-05 19:25:44,373 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 10414 transitions. Word has length 243 [2021-11-05 19:25:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:44,374 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 10414 transitions. [2021-11-05 19:25:44,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2021-11-05 19:25:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 10414 transitions. [2021-11-05 19:25:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-05 19:25:44,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:44,382 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:44,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 19:25:44,382 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1298900732, now seen corresponding path program 1 times [2021-11-05 19:25:44,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:44,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431421906] [2021-11-05 19:25:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:44,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 19:25:44,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:44,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431421906] [2021-11-05 19:25:44,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431421906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:44,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:44,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 19:25:44,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170384787] [2021-11-05 19:25:44,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:44,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:25:44,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:44,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:25:44,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:25:44,658 INFO L87 Difference]: Start difference. First operand 7793 states and 10414 transitions. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2021-11-05 19:25:47,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:47,373 INFO L93 Difference]: Finished difference Result 51957 states and 69869 transitions. [2021-11-05 19:25:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:25:47,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 249 [2021-11-05 19:25:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:47,450 INFO L225 Difference]: With dead ends: 51957 [2021-11-05 19:25:47,450 INFO L226 Difference]: Without dead ends: 44259 [2021-11-05 19:25:47,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 76.30ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:25:47,472 INFO L933 BasicCegarLoop]: 7060 mSDtfsCounter, 25197 mSDsluCounter, 27978 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25197 SdHoareTripleChecker+Valid, 35038 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.70ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.14ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:47,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25197 Valid, 35038 Invalid, 267 Unknown, 0 Unchecked, 39.70ms Time], IncrementalHoareTripleChecker [28 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 336.14ms Time] [2021-11-05 19:25:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44259 states. [2021-11-05 19:25:48,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44259 to 7798. [2021-11-05 19:25:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7798 states, 7790 states have (on average 1.3374839537869063) internal successors, (10419), 7797 states have internal predecessors, (10419), 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) [2021-11-05 19:25:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7798 states to 7798 states and 10419 transitions. [2021-11-05 19:25:48,095 INFO L78 Accepts]: Start accepts. Automaton has 7798 states and 10419 transitions. Word has length 249 [2021-11-05 19:25:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:48,095 INFO L470 AbstractCegarLoop]: Abstraction has 7798 states and 10419 transitions. [2021-11-05 19:25:48,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2021-11-05 19:25:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7798 states and 10419 transitions. [2021-11-05 19:25:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-05 19:25:48,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:48,103 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:48,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 19:25:48,103 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash 227179663, now seen corresponding path program 1 times [2021-11-05 19:25:48,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:48,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60405273] [2021-11-05 19:25:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:48,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 19:25:48,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:48,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60405273] [2021-11-05 19:25:48,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60405273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:48,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:48,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 19:25:48,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196405517] [2021-11-05 19:25:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:48,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 19:25:48,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 19:25:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:25:48,448 INFO L87 Difference]: Start difference. First operand 7798 states and 10419 transitions. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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) [2021-11-05 19:25:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:51,500 INFO L93 Difference]: Finished difference Result 39135 states and 52537 transitions. [2021-11-05 19:25:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 19:25:51,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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 250 [2021-11-05 19:25:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:51,542 INFO L225 Difference]: With dead ends: 39135 [2021-11-05 19:25:51,542 INFO L226 Difference]: Without dead ends: 31432 [2021-11-05 19:25:51,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 456.82ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-11-05 19:25:51,558 INFO L933 BasicCegarLoop]: 10937 mSDtfsCounter, 38608 mSDsluCounter, 62958 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 506.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38608 SdHoareTripleChecker+Valid, 73895 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 572.70ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:51,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38608 Valid, 73895 Invalid, 483 Unknown, 0 Unchecked, 64.46ms Time], IncrementalHoareTripleChecker [3 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 572.70ms Time] [2021-11-05 19:25:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31432 states. [2021-11-05 19:25:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31432 to 7798. [2021-11-05 19:25:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7798 states, 7790 states have (on average 1.3374839537869063) internal successors, (10419), 7797 states have internal predecessors, (10419), 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) [2021-11-05 19:25:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7798 states to 7798 states and 10419 transitions. [2021-11-05 19:25:52,236 INFO L78 Accepts]: Start accepts. Automaton has 7798 states and 10419 transitions. Word has length 250 [2021-11-05 19:25:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:52,237 INFO L470 AbstractCegarLoop]: Abstraction has 7798 states and 10419 transitions. [2021-11-05 19:25:52,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 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) [2021-11-05 19:25:52,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7798 states and 10419 transitions. [2021-11-05 19:25:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-05 19:25:52,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:52,244 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:52,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 19:25:52,244 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1436022172, now seen corresponding path program 1 times [2021-11-05 19:25:52,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:52,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429810285] [2021-11-05 19:25:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:52,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 19:25:52,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:52,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429810285] [2021-11-05 19:25:52,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429810285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:52,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:52,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 19:25:52,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54684822] [2021-11-05 19:25:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:52,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:25:52,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:25:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:25:52,495 INFO L87 Difference]: Start difference. First operand 7798 states and 10419 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2021-11-05 19:25:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:54,984 INFO L93 Difference]: Finished difference Result 30890 states and 41410 transitions. [2021-11-05 19:25:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:25:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 255 [2021-11-05 19:25:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:55,020 INFO L225 Difference]: With dead ends: 30890 [2021-11-05 19:25:55,020 INFO L226 Difference]: Without dead ends: 23187 [2021-11-05 19:25:55,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 66.82ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:25:55,035 INFO L933 BasicCegarLoop]: 10521 mSDtfsCounter, 13384 mSDsluCounter, 32628 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13384 SdHoareTripleChecker+Valid, 43149 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.91ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 448.17ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:55,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13384 Valid, 43149 Invalid, 326 Unknown, 0 Unchecked, 41.91ms Time], IncrementalHoareTripleChecker [22 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 448.17ms Time] [2021-11-05 19:25:55,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2021-11-05 19:25:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 7803. [2021-11-05 19:25:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 7795 states have (on average 1.3372674791533035) internal successors, (10424), 7802 states have internal predecessors, (10424), 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) [2021-11-05 19:25:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 10424 transitions. [2021-11-05 19:25:55,733 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 10424 transitions. Word has length 255 [2021-11-05 19:25:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:55,734 INFO L470 AbstractCegarLoop]: Abstraction has 7803 states and 10424 transitions. [2021-11-05 19:25:55,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2021-11-05 19:25:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 10424 transitions. [2021-11-05 19:25:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-05 19:25:55,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:55,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:55,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 19:25:55,740 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1205189198, now seen corresponding path program 1 times [2021-11-05 19:25:55,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:55,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597220291] [2021-11-05 19:25:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:55,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:25:55,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:55,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597220291] [2021-11-05 19:25:55,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597220291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:55,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:55,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:25:55,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964993468] [2021-11-05 19:25:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:55,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:25:55,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:25:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:25:55,932 INFO L87 Difference]: Start difference. First operand 7803 states and 10424 transitions. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 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) [2021-11-05 19:25:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:57,499 INFO L93 Difference]: Finished difference Result 24279 states and 32507 transitions. [2021-11-05 19:25:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:25:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 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 258 [2021-11-05 19:25:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:57,523 INFO L225 Difference]: With dead ends: 24279 [2021-11-05 19:25:57,523 INFO L226 Difference]: Without dead ends: 16571 [2021-11-05 19:25:57,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.70ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:25:57,533 INFO L933 BasicCegarLoop]: 5898 mSDtfsCounter, 6567 mSDsluCounter, 9481 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 245.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6567 SdHoareTripleChecker+Valid, 15379 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.04ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.84ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:57,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6567 Valid, 15379 Invalid, 204 Unknown, 0 Unchecked, 13.04ms Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 283.84ms Time] [2021-11-05 19:25:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16571 states. [2021-11-05 19:25:58,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16571 to 7821. [2021-11-05 19:25:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7821 states, 7813 states have (on average 1.3364904646102649) internal successors, (10442), 7820 states have internal predecessors, (10442), 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) [2021-11-05 19:25:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7821 states to 7821 states and 10442 transitions. [2021-11-05 19:25:58,187 INFO L78 Accepts]: Start accepts. Automaton has 7821 states and 10442 transitions. Word has length 258 [2021-11-05 19:25:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:58,188 INFO L470 AbstractCegarLoop]: Abstraction has 7821 states and 10442 transitions. [2021-11-05 19:25:58,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 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) [2021-11-05 19:25:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7821 states and 10442 transitions. [2021-11-05 19:25:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-05 19:25:58,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:58,194 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:58,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 19:25:58,194 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -122917204, now seen corresponding path program 1 times [2021-11-05 19:25:58,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:58,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846268348] [2021-11-05 19:25:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:58,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:25:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:25:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-05 19:25:58,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:25:58,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846268348] [2021-11-05 19:25:58,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846268348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:25:58,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:25:58,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:25:58,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730199772] [2021-11-05 19:25:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:25:58,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:25:58,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:25:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:25:58,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:58,528 INFO L87 Difference]: Start difference. First operand 7821 states and 10442 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2021-11-05 19:25:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:25:59,337 INFO L93 Difference]: Finished difference Result 15578 states and 20823 transitions. [2021-11-05 19:25:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:25:59,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 261 [2021-11-05 19:25:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:25:59,347 INFO L225 Difference]: With dead ends: 15578 [2021-11-05 19:25:59,347 INFO L226 Difference]: Without dead ends: 7825 [2021-11-05 19:25:59,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:25:59,354 INFO L933 BasicCegarLoop]: 3759 mSDtfsCounter, 0 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.11ms IncrementalHoareTripleChecker+Time [2021-11-05 19:25:59,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7477 Invalid, 51 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 141.11ms Time] [2021-11-05 19:25:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7825 states. [2021-11-05 19:25:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7825 to 7825. [2021-11-05 19:25:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7825 states, 7817 states have (on average 1.336318280670334) internal successors, (10446), 7824 states have internal predecessors, (10446), 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) [2021-11-05 19:25:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 10446 transitions. [2021-11-05 19:25:59,933 INFO L78 Accepts]: Start accepts. Automaton has 7825 states and 10446 transitions. Word has length 261 [2021-11-05 19:25:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:25:59,933 INFO L470 AbstractCegarLoop]: Abstraction has 7825 states and 10446 transitions. [2021-11-05 19:25:59,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2021-11-05 19:25:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7825 states and 10446 transitions. [2021-11-05 19:25:59,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-05 19:25:59,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:25:59,939 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:25:59,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 19:25:59,939 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:25:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:25:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -541708950, now seen corresponding path program 1 times [2021-11-05 19:25:59,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:25:59,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752577918] [2021-11-05 19:25:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:25:59,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:26:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-05 19:26:00,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:26:00,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752577918] [2021-11-05 19:26:00,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752577918] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:26:00,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25397147] [2021-11-05 19:26:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:00,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:26:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:26:00,319 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) [2021-11-05 19:26:00,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 19:26:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:01,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 4367 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-05 19:26:01,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:26:01,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-05 19:26:01,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-05 19:26:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 19:26:01,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:26:01,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25397147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:26:01,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:26:01,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-05 19:26:01,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105222148] [2021-11-05 19:26:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:26:01,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:26:01,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:26:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:26:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:26:01,828 INFO L87 Difference]: Start difference. First operand 7825 states and 10446 transitions. Second operand has 8 states, 8 states have (on average 31.25) internal successors, (250), 8 states have internal predecessors, (250), 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) [2021-11-05 19:26:03,861 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:26:05,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:26:08,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:26:10,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:26:12,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:26:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:26:22,596 INFO L93 Difference]: Finished difference Result 19440 states and 26371 transitions. [2021-11-05 19:26:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 19:26:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.25) internal successors, (250), 8 states have internal predecessors, (250), 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 265 [2021-11-05 19:26:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:26:22,610 INFO L225 Difference]: With dead ends: 19440 [2021-11-05 19:26:22,610 INFO L226 Difference]: Without dead ends: 11714 [2021-11-05 19:26:22,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 167.05ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-05 19:26:22,621 INFO L933 BasicCegarLoop]: 4078 mSDtfsCounter, 4882 mSDsluCounter, 20178 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 247 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17797.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4882 SdHoareTripleChecker+Valid, 24256 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.92ms SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 19434.72ms IncrementalHoareTripleChecker+Time [2021-11-05 19:26:22,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4882 Valid, 24256 Invalid, 4796 Unknown, 0 Unchecked, 35.92ms Time], IncrementalHoareTripleChecker [247 Valid, 4257 Invalid, 5 Unknown, 287 Unchecked, 19434.72ms Time] [2021-11-05 19:26:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11714 states. [2021-11-05 19:26:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11714 to 8947. [2021-11-05 19:26:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8947 states, 8939 states have (on average 1.3567513144647052) internal successors, (12128), 8946 states have internal predecessors, (12128), 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) [2021-11-05 19:26:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8947 states to 8947 states and 12128 transitions. [2021-11-05 19:26:23,337 INFO L78 Accepts]: Start accepts. Automaton has 8947 states and 12128 transitions. Word has length 265 [2021-11-05 19:26:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:26:23,338 INFO L470 AbstractCegarLoop]: Abstraction has 8947 states and 12128 transitions. [2021-11-05 19:26:23,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.25) internal successors, (250), 8 states have internal predecessors, (250), 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) [2021-11-05 19:26:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8947 states and 12128 transitions. [2021-11-05 19:26:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-05 19:26:23,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:26:23,344 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:26:23,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 19:26:23,551 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,SelfDestructingSolverStorable17 [2021-11-05 19:26:23,552 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:26:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:26:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1382683467, now seen corresponding path program 1 times [2021-11-05 19:26:23,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:26:23,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779451072] [2021-11-05 19:26:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:23,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:26:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 19:26:23,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:26:23,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779451072] [2021-11-05 19:26:23,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779451072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:26:23,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:26:23,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 19:26:23,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212752767] [2021-11-05 19:26:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:26:23,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:26:23,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:26:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:26:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:26:23,917 INFO L87 Difference]: Start difference. First operand 8947 states and 12128 transitions. Second operand has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 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) [2021-11-05 19:26:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:26:27,578 INFO L93 Difference]: Finished difference Result 43803 states and 59795 transitions. [2021-11-05 19:26:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 19:26:27,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 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 267 [2021-11-05 19:26:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:26:27,630 INFO L225 Difference]: With dead ends: 43803 [2021-11-05 19:26:27,631 INFO L226 Difference]: Without dead ends: 34955 [2021-11-05 19:26:27,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 179.15ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 19:26:27,651 INFO L933 BasicCegarLoop]: 7419 mSDtfsCounter, 26471 mSDsluCounter, 36986 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 530.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26471 SdHoareTripleChecker+Valid, 44405 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.80ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 609.43ms IncrementalHoareTripleChecker+Time [2021-11-05 19:26:27,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26471 Valid, 44405 Invalid, 511 Unknown, 0 Unchecked, 40.80ms Time], IncrementalHoareTripleChecker [36 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 609.43ms Time] [2021-11-05 19:26:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34955 states. [2021-11-05 19:26:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34955 to 8992. [2021-11-05 19:26:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8992 states, 8984 states have (on average 1.3549643811219947) internal successors, (12173), 8991 states have internal predecessors, (12173), 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) [2021-11-05 19:26:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8992 states to 8992 states and 12173 transitions. [2021-11-05 19:26:28,659 INFO L78 Accepts]: Start accepts. Automaton has 8992 states and 12173 transitions. Word has length 267 [2021-11-05 19:26:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:26:28,660 INFO L470 AbstractCegarLoop]: Abstraction has 8992 states and 12173 transitions. [2021-11-05 19:26:28,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 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) [2021-11-05 19:26:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8992 states and 12173 transitions. [2021-11-05 19:26:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-05 19:26:28,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:26:28,665 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:26:28,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 19:26:28,666 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:26:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:26:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash -352778991, now seen corresponding path program 1 times [2021-11-05 19:26:28,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:26:28,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796697089] [2021-11-05 19:26:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:28,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:26:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 19:26:28,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:26:28,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796697089] [2021-11-05 19:26:28,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796697089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:26:28,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:26:28,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:26:28,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452255846] [2021-11-05 19:26:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:26:28,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:26:28,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:26:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:26:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:26:28,837 INFO L87 Difference]: Start difference. First operand 8992 states and 12173 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2021-11-05 19:26:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:26:30,531 INFO L93 Difference]: Finished difference Result 26598 states and 36105 transitions. [2021-11-05 19:26:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:26:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 267 [2021-11-05 19:26:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:26:30,555 INFO L225 Difference]: With dead ends: 26598 [2021-11-05 19:26:30,556 INFO L226 Difference]: Without dead ends: 17705 [2021-11-05 19:26:30,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:26:30,571 INFO L933 BasicCegarLoop]: 5709 mSDtfsCounter, 3596 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3596 SdHoareTripleChecker+Valid, 9448 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.60ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.37ms IncrementalHoareTripleChecker+Time [2021-11-05 19:26:30,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3596 Valid, 9448 Invalid, 43 Unknown, 0 Unchecked, 7.60ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 67.37ms Time] [2021-11-05 19:26:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2021-11-05 19:26:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 9037. [2021-11-05 19:26:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9037 states, 9029 states have (on average 1.35419204784583) internal successors, (12227), 9036 states have internal predecessors, (12227), 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) [2021-11-05 19:26:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9037 states to 9037 states and 12227 transitions. [2021-11-05 19:26:31,479 INFO L78 Accepts]: Start accepts. Automaton has 9037 states and 12227 transitions. Word has length 267 [2021-11-05 19:26:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:26:31,480 INFO L470 AbstractCegarLoop]: Abstraction has 9037 states and 12227 transitions. [2021-11-05 19:26:31,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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) [2021-11-05 19:26:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9037 states and 12227 transitions. [2021-11-05 19:26:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-05 19:26:31,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:26:31,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:26:31,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 19:26:31,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:26:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:26:31,488 INFO L85 PathProgramCache]: Analyzing trace with hash 47202554, now seen corresponding path program 1 times [2021-11-05 19:26:31,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:26:31,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336722304] [2021-11-05 19:26:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:31,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:26:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 19:26:31,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:26:31,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336722304] [2021-11-05 19:26:31,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336722304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:26:31,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:26:31,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:26:31,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623315834] [2021-11-05 19:26:31,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:26:31,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:26:31,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:26:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:26:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:26:31,717 INFO L87 Difference]: Start difference. First operand 9037 states and 12227 transitions. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2021-11-05 19:26:33,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:26:33,342 INFO L93 Difference]: Finished difference Result 23004 states and 31311 transitions. [2021-11-05 19:26:33,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:26:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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 271 [2021-11-05 19:26:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:26:33,361 INFO L225 Difference]: With dead ends: 23004 [2021-11-05 19:26:33,362 INFO L226 Difference]: Without dead ends: 14066 [2021-11-05 19:26:33,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:26:33,372 INFO L933 BasicCegarLoop]: 5718 mSDtfsCounter, 3913 mSDsluCounter, 7385 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 13103 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.65ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.21ms IncrementalHoareTripleChecker+Time [2021-11-05 19:26:33,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 13103 Invalid, 195 Unknown, 0 Unchecked, 49.65ms Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 261.21ms Time] [2021-11-05 19:26:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14066 states. [2021-11-05 19:26:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14066 to 9055. [2021-11-05 19:26:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9055 states, 9047 states have (on average 1.3534873438708965) internal successors, (12245), 9054 states have internal predecessors, (12245), 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) [2021-11-05 19:26:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9055 states to 9055 states and 12245 transitions. [2021-11-05 19:26:34,345 INFO L78 Accepts]: Start accepts. Automaton has 9055 states and 12245 transitions. Word has length 271 [2021-11-05 19:26:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:26:34,345 INFO L470 AbstractCegarLoop]: Abstraction has 9055 states and 12245 transitions. [2021-11-05 19:26:34,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2021-11-05 19:26:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 9055 states and 12245 transitions. [2021-11-05 19:26:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-05 19:26:34,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:26:34,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:26:34,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 19:26:34,352 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:26:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:26:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1799183258, now seen corresponding path program 1 times [2021-11-05 19:26:34,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:26:34,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23207946] [2021-11-05 19:26:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:34,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:26:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 19:26:34,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:26:34,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23207946] [2021-11-05 19:26:34,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23207946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:26:34,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:26:34,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:26:34,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654759303] [2021-11-05 19:26:34,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:26:34,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:26:34,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:26:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:26:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:26:34,531 INFO L87 Difference]: Start difference. First operand 9055 states and 12245 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-11-05 19:26:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:26:35,454 INFO L93 Difference]: Finished difference Result 18020 states and 24400 transitions. [2021-11-05 19:26:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:26:35,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 272 [2021-11-05 19:26:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:26:35,469 INFO L225 Difference]: With dead ends: 18020 [2021-11-05 19:26:35,469 INFO L226 Difference]: Without dead ends: 9064 [2021-11-05 19:26:35,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:26:35,478 INFO L933 BasicCegarLoop]: 3760 mSDtfsCounter, 0 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7502 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.24ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.46ms IncrementalHoareTripleChecker+Time [2021-11-05 19:26:35,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7502 Invalid, 25 Unknown, 0 Unchecked, 4.24ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 35.46ms Time] [2021-11-05 19:26:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2021-11-05 19:26:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 9064. [2021-11-05 19:26:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9064 states, 9056 states have (on average 1.353136042402827) internal successors, (12254), 9063 states have internal predecessors, (12254), 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) [2021-11-05 19:26:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9064 states to 9064 states and 12254 transitions. [2021-11-05 19:26:36,441 INFO L78 Accepts]: Start accepts. Automaton has 9064 states and 12254 transitions. Word has length 272 [2021-11-05 19:26:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:26:36,441 INFO L470 AbstractCegarLoop]: Abstraction has 9064 states and 12254 transitions. [2021-11-05 19:26:36,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-11-05 19:26:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9064 states and 12254 transitions. [2021-11-05 19:26:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-05 19:26:36,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:26:36,448 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:26:36,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 19:26:36,448 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:26:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:26:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash 348776803, now seen corresponding path program 1 times [2021-11-05 19:26:36,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:26:36,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078944951] [2021-11-05 19:26:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:36,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:26:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:26:37,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:26:37,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078944951] [2021-11-05 19:26:37,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078944951] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:26:37,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881176108] [2021-11-05 19:26:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:26:37,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:26:37,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:26:37,139 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) [2021-11-05 19:26:37,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 19:26:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:26:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 4608 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-05 19:26:38,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:26:38,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 19:26:38,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-05 19:26:39,040 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-05 19:26:39,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-05 19:26:39,062 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-05 19:26:39,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-11-05 19:26:39,229 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-05 19:26:39,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2021-11-05 19:26:39,252 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-05 19:26:39,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-05 19:26:49,552 INFO L354 Elim1Store]: treesize reduction 69, result has 18.8 percent of original size [2021-11-05 19:26:49,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 46 [2021-11-05 19:27:00,502 INFO L354 Elim1Store]: treesize reduction 150, result has 21.1 percent of original size [2021-11-05 19:27:00,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 72 treesize of output 102 [2021-11-05 19:27:00,709 INFO L354 Elim1Store]: treesize reduction 470, result has 8.6 percent of original size [2021-11-05 19:27:00,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 53 [2021-11-05 19:28:06,778 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-05 19:28:06,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 151 [2021-11-05 19:28:06,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-05 19:28:06,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:28:06,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-05 19:28:06,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565855513] [2021-11-05 19:28:06,793 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-05 19:28:06,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 19:28:06,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 19:28:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=324, Unknown=5, NotChecked=0, Total=380 [2021-11-05 19:28:06,794 INFO L87 Difference]: Start difference. First operand 9064 states and 12254 transitions. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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) [2021-11-05 19:28:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:28:06,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 22619.64ms TimeCoverageRelationStatistics Valid=51, Invalid=324, Unknown=5, NotChecked=0, Total=380 [2021-11-05 19:28:06,795 INFO L933 BasicCegarLoop]: 1 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, 1 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:06,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 0.03ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:28:06,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-05 19:28:07,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:28:07,008 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@399e73a9 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-05 19:28:07,011 INFO L158 Benchmark]: Toolchain (without parser) took 180304.41ms. Allocated memory was 50.3MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 22.8MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2021-11-05 19:28:07,011 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 33.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-05 19:28:07,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2148.21ms. Allocated memory was 50.3MB in the beginning and 190.8MB in the end (delta: 140.5MB). Free memory was 22.5MB in the beginning and 77.0MB in the end (delta: -54.5MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2021-11-05 19:28:07,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 367.30ms. Allocated memory is still 190.8MB. Free memory was 77.0MB in the beginning and 85.5MB in the end (delta: -8.4MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2021-11-05 19:28:07,012 INFO L158 Benchmark]: Boogie Preprocessor took 577.75ms. Allocated memory was 190.8MB in the beginning and 438.3MB in the end (delta: 247.5MB). Free memory was 85.5MB in the beginning and 286.6MB in the end (delta: -201.1MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2021-11-05 19:28:07,012 INFO L158 Benchmark]: RCFGBuilder took 10364.24ms. Allocated memory was 438.3MB in the beginning and 1.1GB in the end (delta: 614.5MB). Free memory was 286.6MB in the beginning and 818.8MB in the end (delta: -532.2MB). Peak memory consumption was 652.7MB. Max. memory is 16.1GB. [2021-11-05 19:28:07,012 INFO L158 Benchmark]: TraceAbstraction took 166841.16ms. Allocated memory was 1.1GB in the beginning and 3.2GB in the end (delta: 2.1GB). Free memory was 817.7MB in the beginning and 1.6GB in the end (delta: -742.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2021-11-05 19:28:07,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 50.3MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 33.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2148.21ms. Allocated memory was 50.3MB in the beginning and 190.8MB in the end (delta: 140.5MB). Free memory was 22.5MB in the beginning and 77.0MB in the end (delta: -54.5MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 367.30ms. Allocated memory is still 190.8MB. Free memory was 77.0MB in the beginning and 85.5MB in the end (delta: -8.4MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 577.75ms. Allocated memory was 190.8MB in the beginning and 438.3MB in the end (delta: 247.5MB). Free memory was 85.5MB in the beginning and 286.6MB in the end (delta: -201.1MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * RCFGBuilder took 10364.24ms. Allocated memory was 438.3MB in the beginning and 1.1GB in the end (delta: 614.5MB). Free memory was 286.6MB in the beginning and 818.8MB in the end (delta: -532.2MB). Peak memory consumption was 652.7MB. Max. memory is 16.1GB. * TraceAbstraction took 166841.16ms. Allocated memory was 1.1GB in the beginning and 3.2GB in the end (delta: 2.1GB). Free memory was 817.7MB in the beginning and 1.6GB in the end (delta: -742.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@399e73a9 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@399e73a9: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-05 19:28:07,219 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-05 19:28:07,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash 283b2978ab7cc2aad6d9ef5bd7f2056001c273cafa889d9023ed11b9be13f4c5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:28:08,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:28:08,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:28:08,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:28:08,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:28:08,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:28:08,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:28:08,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:28:08,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:28:08,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:28:08,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:28:08,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:28:08,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:28:08,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:28:08,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:28:08,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:28:08,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:28:08,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:28:08,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:28:08,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:28:08,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:28:08,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:28:08,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:28:08,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:28:08,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:28:08,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:28:08,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:28:08,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:28:08,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:28:08,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:28:08,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:28:08,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:28:08,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:28:08,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:28:08,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:28:08,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:28:08,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:28:08,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:28:08,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:28:08,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:28:08,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:28:08,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-05 19:28:08,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:28:08,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:28:08,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:28:08,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:28:08,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:28:08,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:28:08,859 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:28:08,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:28:08,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:28:08,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:28:08,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:28:08,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:28:08,860 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-05 19:28:08,860 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-05 19:28:08,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:28:08,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:28:08,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:28:08,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:28:08,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:28:08,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:28:08,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:28:08,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:28:08,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:28:08,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:28:08,862 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-05 19:28:08,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-05 19:28:08,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:28:08,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:28:08,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:28:08,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:28:08,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-05 19:28:08,863 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 283b2978ab7cc2aad6d9ef5bd7f2056001c273cafa889d9023ed11b9be13f4c5 [2021-11-05 19:28:09,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:28:09,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:28:09,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:28:09,118 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:28:09,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:28:09,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-05 19:28:09,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c3cf4a7/5a58431e1266426995a8b9ce5efc1228/FLAG47a157ebb [2021-11-05 19:28:09,770 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:28:09,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-05 19:28:09,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c3cf4a7/5a58431e1266426995a8b9ce5efc1228/FLAG47a157ebb [2021-11-05 19:28:10,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c3cf4a7/5a58431e1266426995a8b9ce5efc1228 [2021-11-05 19:28:10,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:28:10,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:28:10,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:28:10,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:28:10,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:28:10,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:28:10" (1/1) ... [2021-11-05 19:28:10,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7466b78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:10, skipping insertion in model container [2021-11-05 19:28:10,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:28:10" (1/1) ... [2021-11-05 19:28:10,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:28:10,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:28:12,061 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319471,319484] [2021-11-05 19:28:12,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:28:12,141 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:28:12,550 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i[319471,319484] [2021-11-05 19:28:12,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:28:12,737 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:28:12,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12 WrapperNode [2021-11-05 19:28:12,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:28:12,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:28:12,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:28:12,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:28:12,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:12,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:28:13,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:28:13,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:28:13,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:28:13,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:28:13,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:28:13,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:28:13,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:28:13,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (1/1) ... [2021-11-05 19:28:13,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:28:13,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:28:13,800 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) [2021-11-05 19:28:13,816 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 [2021-11-05 19:28:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-05 19:28:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-05 19:28:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-05 19:28:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:28:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-05 19:28:13,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:28:13,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-05 19:28:13,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-05 19:28:13,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:28:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:28:52,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:28:52,383 INFO L299 CfgBuilder]: Removed 3283 assume(true) statements. [2021-11-05 19:28:52,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:28:52 BoogieIcfgContainer [2021-11-05 19:28:52,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:28:52,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:28:52,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:28:52,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:28:52,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:28:10" (1/3) ... [2021-11-05 19:28:52,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45246d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:28:52, skipping insertion in model container [2021-11-05 19:28:52,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:12" (2/3) ... [2021-11-05 19:28:52,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45246d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:28:52, skipping insertion in model container [2021-11-05 19:28:52,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:28:52" (3/3) ... [2021-11-05 19:28:52,394 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--xen-netfront.ko-entry_point.cil.out.i [2021-11-05 19:28:52,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:28:52,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-05 19:28:52,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:28:52,457 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 [2021-11-05 19:28:52,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-05 19:28:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 2925 states, 2907 states have (on average 1.370485036119711) internal successors, (3984), 2924 states have internal predecessors, (3984), 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) [2021-11-05 19:28:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 19:28:52,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:52,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:28:52,522 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:28:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash 987291868, now seen corresponding path program 1 times [2021-11-05 19:28:52,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:28:52,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991682282] [2021-11-05 19:28:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:52,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:28:52,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:28:52,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:28:52,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-05 19:28:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:54,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-05 19:28:54,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:28:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:28:55,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:28:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:28:55,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:28:55,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991682282] [2021-11-05 19:28:55,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991682282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:55,741 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:55,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-05 19:28:55,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654047176] [2021-11-05 19:28:55,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:55,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:28:55,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:28:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:28:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:28:55,768 INFO L87 Difference]: Start difference. First operand has 2925 states, 2907 states have (on average 1.370485036119711) internal successors, (3984), 2924 states have internal predecessors, (3984), 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 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2021-11-05 19:28:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:28:55,854 INFO L93 Difference]: Finished difference Result 5846 states and 7963 transitions. [2021-11-05 19:28:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:28:55,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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 131 [2021-11-05 19:28:55,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:28:55,871 INFO L225 Difference]: With dead ends: 5846 [2021-11-05 19:28:55,872 INFO L226 Difference]: Without dead ends: 2870 [2021-11-05 19:28:55,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.98ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:28:55,881 INFO L933 BasicCegarLoop]: 3896 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, 3896 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:55,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3896 Invalid, 0 Unknown, 0 Unchecked, 7.73ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:28:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-11-05 19:28:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-11-05 19:28:55,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2853 states have (on average 1.3284262180161235) internal successors, (3790), 2869 states have internal predecessors, (3790), 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) [2021-11-05 19:28:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3790 transitions. [2021-11-05 19:28:55,965 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3790 transitions. Word has length 131 [2021-11-05 19:28:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:28:55,966 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 3790 transitions. [2021-11-05 19:28:55,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 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) [2021-11-05 19:28:55,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3790 transitions. [2021-11-05 19:28:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 19:28:55,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:55,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:28:56,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-05 19:28:56,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:28:56,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:28:56,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1408896448, now seen corresponding path program 1 times [2021-11-05 19:28:56,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:28:56,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716898601] [2021-11-05 19:28:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:56,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:28:56,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:28:56,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:28:56,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-05 19:28:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:58,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:28:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:28:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:28:58,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:28:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:28:59,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:28:59,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716898601] [2021-11-05 19:28:59,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716898601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:59,154 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:59,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:28:59,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325050434] [2021-11-05 19:28:59,155 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:59,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:28:59,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:28:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:28:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:28:59,156 INFO L87 Difference]: Start difference. First operand 2870 states and 3790 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-11-05 19:29:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:00,169 INFO L93 Difference]: Finished difference Result 5691 states and 7549 transitions. [2021-11-05 19:29:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:29:00,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 131 [2021-11-05 19:29:00,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:00,180 INFO L225 Difference]: With dead ends: 5691 [2021-11-05 19:29:00,180 INFO L226 Difference]: Without dead ends: 2889 [2021-11-05 19:29:00,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.11ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:29:00,191 INFO L933 BasicCegarLoop]: 3775 mSDtfsCounter, 0 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 818.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7520 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.80ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 939.21ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:00,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7520 Invalid, 98 Unknown, 0 Unchecked, 9.80ms Time], IncrementalHoareTripleChecker [38 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 939.21ms Time] [2021-11-05 19:29:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2021-11-05 19:29:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2889. [2021-11-05 19:29:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2872 states have (on average 1.3262534818941505) internal successors, (3809), 2888 states have internal predecessors, (3809), 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) [2021-11-05 19:29:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 3809 transitions. [2021-11-05 19:29:00,240 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 3809 transitions. Word has length 131 [2021-11-05 19:29:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:00,242 INFO L470 AbstractCegarLoop]: Abstraction has 2889 states and 3809 transitions. [2021-11-05 19:29:00,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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) [2021-11-05 19:29:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 3809 transitions. [2021-11-05 19:29:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 19:29:00,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:00,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:00,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:00,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:00,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash 342893460, now seen corresponding path program 1 times [2021-11-05 19:29:00,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:00,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232361725] [2021-11-05 19:29:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:00,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:00,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:00,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:00,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-05 19:29:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:02,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 19:29:02,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:03,268 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 19:29:03,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 19:29:03,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:03,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232361725] [2021-11-05 19:29:03,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232361725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:29:03,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 19:29:03,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-05 19:29:03,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749515292] [2021-11-05 19:29:03,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 19:29:03,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:29:03,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:29:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:29:03,707 INFO L87 Difference]: Start difference. First operand 2889 states and 3809 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2021-11-05 19:29:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:07,603 INFO L93 Difference]: Finished difference Result 5738 states and 7607 transitions. [2021-11-05 19:29:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:29:07,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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 144 [2021-11-05 19:29:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:07,614 INFO L225 Difference]: With dead ends: 5738 [2021-11-05 19:29:07,614 INFO L226 Difference]: Without dead ends: 2919 [2021-11-05 19:29:07,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 417.22ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:29:07,622 INFO L933 BasicCegarLoop]: 3775 mSDtfsCounter, 0 mSDsluCounter, 11235 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3289.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15010 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.09ms SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3598.68ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:07,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15010 Invalid, 307 Unknown, 0 Unchecked, 13.09ms Time], IncrementalHoareTripleChecker [130 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 3598.68ms Time] [2021-11-05 19:29:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-11-05 19:29:07,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2919. [2021-11-05 19:29:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2902 states have (on average 1.322880771881461) internal successors, (3839), 2918 states have internal predecessors, (3839), 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) [2021-11-05 19:29:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 3839 transitions. [2021-11-05 19:29:07,690 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 3839 transitions. Word has length 144 [2021-11-05 19:29:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:07,691 INFO L470 AbstractCegarLoop]: Abstraction has 2919 states and 3839 transitions. [2021-11-05 19:29:07,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2021-11-05 19:29:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 3839 transitions. [2021-11-05 19:29:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-05 19:29:07,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:07,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:07,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:07,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:07,908 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1956559148, now seen corresponding path program 2 times [2021-11-05 19:29:07,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:07,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406313029] [2021-11-05 19:29:07,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:29:07,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:07,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:07,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:07,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-05 19:29:10,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:29:10,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:29:10,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:29:10,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:29:10,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:29:10,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:10,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406313029] [2021-11-05 19:29:10,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406313029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:10,705 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:10,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-05 19:29:10,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581770021] [2021-11-05 19:29:10,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:10,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:10,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:10,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:10,706 INFO L87 Difference]: Start difference. First operand 2919 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-05 19:29:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:11,270 INFO L93 Difference]: Finished difference Result 7681 states and 10149 transitions. [2021-11-05 19:29:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 162 [2021-11-05 19:29:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:11,284 INFO L225 Difference]: With dead ends: 7681 [2021-11-05 19:29:11,285 INFO L226 Difference]: Without dead ends: 4888 [2021-11-05 19:29:11,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:11,290 INFO L933 BasicCegarLoop]: 3789 mSDtfsCounter, 2747 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 409.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 7315 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.28ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 488.76ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:11,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 7315 Invalid, 98 Unknown, 0 Unchecked, 9.28ms Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 488.76ms Time] [2021-11-05 19:29:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2021-11-05 19:29:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4698. [2021-11-05 19:29:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 4681 states have (on average 1.3315530869472334) internal successors, (6233), 4697 states have internal predecessors, (6233), 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) [2021-11-05 19:29:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 6233 transitions. [2021-11-05 19:29:11,368 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 6233 transitions. Word has length 162 [2021-11-05 19:29:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:11,368 INFO L470 AbstractCegarLoop]: Abstraction has 4698 states and 6233 transitions. [2021-11-05 19:29:11,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-11-05 19:29:11,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 6233 transitions. [2021-11-05 19:29:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-05 19:29:11,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:11,372 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:11,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:11,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:11,590 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash 25301460, now seen corresponding path program 1 times [2021-11-05 19:29:11,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:11,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481397837] [2021-11-05 19:29:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:11,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:11,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:11,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:11,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-05 19:29:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 19:29:14,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-05 19:29:15,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-05 19:29:15,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:15,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481397837] [2021-11-05 19:29:15,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481397837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:29:15,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 19:29:15,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-05 19:29:15,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643738965] [2021-11-05 19:29:15,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 19:29:15,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 19:29:15,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 19:29:15,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:29:15,992 INFO L87 Difference]: Start difference. First operand 4698 states and 6233 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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) [2021-11-05 19:29:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:25,481 INFO L93 Difference]: Finished difference Result 9341 states and 12444 transitions. [2021-11-05 19:29:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 19:29:25,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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 174 [2021-11-05 19:29:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:25,495 INFO L225 Difference]: With dead ends: 9341 [2021-11-05 19:29:25,496 INFO L226 Difference]: Without dead ends: 4735 [2021-11-05 19:29:25,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 826.21ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-05 19:29:25,503 INFO L933 BasicCegarLoop]: 3775 mSDtfsCounter, 0 mSDsluCounter, 18725 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8551.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22500 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8993.42ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:25,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22500 Invalid, 524 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [229 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 8993.42ms Time] [2021-11-05 19:29:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2021-11-05 19:29:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4735. [2021-11-05 19:29:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4735 states, 4718 states have (on average 1.3289529461636287) internal successors, (6270), 4734 states have internal predecessors, (6270), 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) [2021-11-05 19:29:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 6270 transitions. [2021-11-05 19:29:25,576 INFO L78 Accepts]: Start accepts. Automaton has 4735 states and 6270 transitions. Word has length 174 [2021-11-05 19:29:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:25,577 INFO L470 AbstractCegarLoop]: Abstraction has 4735 states and 6270 transitions. [2021-11-05 19:29:25,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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) [2021-11-05 19:29:25,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4735 states and 6270 transitions. [2021-11-05 19:29:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-05 19:29:25,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:25,580 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:25,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:25,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:25,792 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash -156801856, now seen corresponding path program 2 times [2021-11-05 19:29:25,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:25,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477648485] [2021-11-05 19:29:25,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:29:25,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:25,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:25,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:25,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-05 19:29:28,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:29:28,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:29:28,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:29:28,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-05 19:29:28,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-05 19:29:28,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:28,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477648485] [2021-11-05 19:29:28,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477648485] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:28,760 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:28,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-05 19:29:28,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636212952] [2021-11-05 19:29:28,761 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:28,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:28,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:28,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:28,762 INFO L87 Difference]: Start difference. First operand 4735 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-05 19:29:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:29,128 INFO L93 Difference]: Finished difference Result 10382 states and 13859 transitions. [2021-11-05 19:29:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:29,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 199 [2021-11-05 19:29:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:29,144 INFO L225 Difference]: With dead ends: 10382 [2021-11-05 19:29:29,145 INFO L226 Difference]: Without dead ends: 5798 [2021-11-05 19:29:29,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:29,152 INFO L933 BasicCegarLoop]: 4806 mSDtfsCounter, 1342 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 244.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 8465 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 297.32ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:29,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 8465 Invalid, 29 Unknown, 0 Unchecked, 4.02ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 297.32ms Time] [2021-11-05 19:29:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2021-11-05 19:29:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5776. [2021-11-05 19:29:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5776 states, 5759 states have (on average 1.3417259940961972) internal successors, (7727), 5775 states have internal predecessors, (7727), 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) [2021-11-05 19:29:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5776 states to 5776 states and 7727 transitions. [2021-11-05 19:29:29,333 INFO L78 Accepts]: Start accepts. Automaton has 5776 states and 7727 transitions. Word has length 199 [2021-11-05 19:29:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:29,334 INFO L470 AbstractCegarLoop]: Abstraction has 5776 states and 7727 transitions. [2021-11-05 19:29:29,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-05 19:29:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5776 states and 7727 transitions. [2021-11-05 19:29:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-05 19:29:29,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:29,338 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:29,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:29,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:29,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:29,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1903589201, now seen corresponding path program 1 times [2021-11-05 19:29:29,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:29,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631117797] [2021-11-05 19:29:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:29,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:29,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:29,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:29,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-05 19:29:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:29:35,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-05 19:29:36,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-05 19:29:36,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:36,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631117797] [2021-11-05 19:29:36,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631117797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:36,496 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:36,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 19:29:36,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954431032] [2021-11-05 19:29:36,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:36,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:29:36,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:36,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:29:36,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:29:36,498 INFO L87 Difference]: Start difference. First operand 5776 states and 7727 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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) [2021-11-05 19:29:38,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:29:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:38,832 INFO L93 Difference]: Finished difference Result 11415 states and 15312 transitions. [2021-11-05 19:29:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:29:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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 242 [2021-11-05 19:29:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:38,847 INFO L225 Difference]: With dead ends: 11415 [2021-11-05 19:29:38,847 INFO L226 Difference]: Without dead ends: 5774 [2021-11-05 19:29:38,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.15ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:38,854 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 6 mSDsluCounter, 7570 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2183.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11358 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2242.26ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:38,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11358 Invalid, 15 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2242.26ms Time] [2021-11-05 19:29:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5774 states. [2021-11-05 19:29:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5774 to 5754. [2021-11-05 19:29:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5754 states, 5737 states have (on average 1.3405961303817326) internal successors, (7691), 5753 states have internal predecessors, (7691), 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) [2021-11-05 19:29:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 7691 transitions. [2021-11-05 19:29:38,952 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 7691 transitions. Word has length 242 [2021-11-05 19:29:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:38,952 INFO L470 AbstractCegarLoop]: Abstraction has 5754 states and 7691 transitions. [2021-11-05 19:29:38,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 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) [2021-11-05 19:29:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 7691 transitions. [2021-11-05 19:29:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-05 19:29:38,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:38,956 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:39,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-05 19:29:39,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:39,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1395075449, now seen corresponding path program 1 times [2021-11-05 19:29:39,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:39,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106411444] [2021-11-05 19:29:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:39,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:39,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:39,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:39,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-05 19:29:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:45,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 19:29:45,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:29:45,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:29:46,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:46,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106411444] [2021-11-05 19:29:46,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106411444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:46,417 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:46,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 6] imperfect sequences [] total 6 [2021-11-05 19:29:46,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624629639] [2021-11-05 19:29:46,417 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:46,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:29:46,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:29:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:29:46,418 INFO L87 Difference]: Start difference. First operand 5754 states and 7691 transitions. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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) [2021-11-05 19:29:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:46,919 INFO L93 Difference]: Finished difference Result 14122 states and 18988 transitions. [2021-11-05 19:29:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:46,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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 249 [2021-11-05 19:29:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:46,937 INFO L225 Difference]: With dead ends: 14122 [2021-11-05 19:29:46,937 INFO L226 Difference]: Without dead ends: 8519 [2021-11-05 19:29:46,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.26ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:29:46,945 INFO L933 BasicCegarLoop]: 5533 mSDtfsCounter, 7144 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 351.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7144 SdHoareTripleChecker+Valid, 9357 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.99ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 385.28ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:46,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7144 Valid, 9357 Invalid, 238 Unknown, 0 Unchecked, 7.99ms Time], IncrementalHoareTripleChecker [94 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 385.28ms Time] [2021-11-05 19:29:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8519 states. [2021-11-05 19:29:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8519 to 5814. [2021-11-05 19:29:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5797 states have (on average 1.337070898740728) internal successors, (7751), 5813 states have internal predecessors, (7751), 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) [2021-11-05 19:29:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 7751 transitions. [2021-11-05 19:29:47,061 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 7751 transitions. Word has length 249 [2021-11-05 19:29:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:47,061 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 7751 transitions. [2021-11-05 19:29:47,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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) [2021-11-05 19:29:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 7751 transitions. [2021-11-05 19:29:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-05 19:29:47,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:47,066 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:47,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:47,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:29:47,284 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:29:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash -223664241, now seen corresponding path program 1 times [2021-11-05 19:29:47,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:29:47,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787162227] [2021-11-05 19:29:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:47,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:29:47,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:29:47,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:29:47,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-05 19:29:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:53,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:29:53,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:53,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-05 19:29:53,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-05 19:29:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:29:54,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:29:54,342 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:29:54,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787162227] [2021-11-05 19:29:54,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787162227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:54,342 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:54,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-05 19:29:54,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144940204] [2021-11-05 19:29:54,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:54,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:29:54,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:29:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:29:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:29:54,343 INFO L87 Difference]: Start difference. First operand 5814 states and 7751 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-11-05 19:29:56,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:00,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:07,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:09,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:14,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:18,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:21,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:30:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:30:21,673 INFO L93 Difference]: Finished difference Result 11489 states and 15360 transitions. [2021-11-05 19:30:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:30:21,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 249 [2021-11-05 19:30:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:30:21,686 INFO L225 Difference]: With dead ends: 11489 [2021-11-05 19:30:21,686 INFO L226 Difference]: Without dead ends: 5826 [2021-11-05 19:30:21,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:30:21,695 INFO L933 BasicCegarLoop]: 3781 mSDtfsCounter, 3 mSDsluCounter, 6778 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25441.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10559 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.62ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27103.71ms IncrementalHoareTripleChecker+Time [2021-11-05 19:30:21,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10559 Invalid, 805 Unknown, 0 Unchecked, 12.62ms Time], IncrementalHoareTripleChecker [6 Valid, 794 Invalid, 5 Unknown, 0 Unchecked, 27103.71ms Time] [2021-11-05 19:30:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5826 states. [2021-11-05 19:30:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5826 to 5826. [2021-11-05 19:30:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 5809 states have (on average 1.3363745911516611) internal successors, (7763), 5825 states have internal predecessors, (7763), 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) [2021-11-05 19:30:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 7763 transitions. [2021-11-05 19:30:21,782 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 7763 transitions. Word has length 249 [2021-11-05 19:30:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:30:21,782 INFO L470 AbstractCegarLoop]: Abstraction has 5826 states and 7763 transitions. [2021-11-05 19:30:21,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2021-11-05 19:30:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 7763 transitions. [2021-11-05 19:30:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-05 19:30:21,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:30:21,787 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:30:21,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-05 19:30:21,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:30:21,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:30:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:30:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2029102575, now seen corresponding path program 1 times [2021-11-05 19:30:22,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:30:22,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956175580] [2021-11-05 19:30:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:30:22,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:30:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:30:22,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:30:22,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-05 19:30:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:30:28,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-05 19:30:28,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:30:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:28,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:30:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:29,320 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:30:29,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956175580] [2021-11-05 19:30:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956175580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:30:29,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:30:29,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-05 19:30:29,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579705658] [2021-11-05 19:30:29,321 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:30:29,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 19:30:29,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:30:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 19:30:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:30:29,322 INFO L87 Difference]: Start difference. First operand 5826 states and 7763 transitions. Second operand has 9 states, 9 states have (on average 22.333333333333332) internal successors, (201), 9 states have internal predecessors, (201), 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) [2021-11-05 19:30:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:30:32,566 INFO L93 Difference]: Finished difference Result 38104 states and 51276 transitions. [2021-11-05 19:30:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 19:30:32,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.333333333333332) internal successors, (201), 9 states have internal predecessors, (201), 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 249 [2021-11-05 19:30:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:30:32,614 INFO L225 Difference]: With dead ends: 38104 [2021-11-05 19:30:32,614 INFO L226 Difference]: Without dead ends: 32429 [2021-11-05 19:30:32,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 493 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 570.11ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-05 19:30:32,626 INFO L933 BasicCegarLoop]: 6509 mSDtfsCounter, 37881 mSDsluCounter, 52321 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1813.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37881 SdHoareTripleChecker+Valid, 58830 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.85ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2033.67ms IncrementalHoareTripleChecker+Time [2021-11-05 19:30:32,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37881 Valid, 58830 Invalid, 629 Unknown, 0 Unchecked, 56.85ms Time], IncrementalHoareTripleChecker [43 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 2033.67ms Time] [2021-11-05 19:30:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32429 states. [2021-11-05 19:30:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32429 to 5856. [2021-11-05 19:30:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5839 states have (on average 1.334646343551978) internal successors, (7793), 5855 states have internal predecessors, (7793), 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) [2021-11-05 19:30:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 7793 transitions. [2021-11-05 19:30:32,930 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 7793 transitions. Word has length 249 [2021-11-05 19:30:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:30:32,931 INFO L470 AbstractCegarLoop]: Abstraction has 5856 states and 7793 transitions. [2021-11-05 19:30:32,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.333333333333332) internal successors, (201), 9 states have internal predecessors, (201), 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) [2021-11-05 19:30:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 7793 transitions. [2021-11-05 19:30:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-05 19:30:32,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:30:32,935 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:30:33,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-05 19:30:33,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:30:33,148 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:30:33,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:30:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash -752564137, now seen corresponding path program 1 times [2021-11-05 19:30:33,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:30:33,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453882929] [2021-11-05 19:30:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:30:33,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:30:33,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:30:33,151 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:30:33,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-05 19:30:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:30:39,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:30:39,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:30:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:40,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:30:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:40,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:30:40,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453882929] [2021-11-05 19:30:40,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453882929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:30:40,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:30:40,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:30:40,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986697770] [2021-11-05 19:30:40,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:30:40,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:30:40,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:30:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:30:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:30:40,277 INFO L87 Difference]: Start difference. First operand 5856 states and 7793 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2021-11-05 19:30:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:30:40,953 INFO L93 Difference]: Finished difference Result 22689 states and 30368 transitions. [2021-11-05 19:30:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:30:40,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 249 [2021-11-05 19:30:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:30:40,983 INFO L225 Difference]: With dead ends: 22689 [2021-11-05 19:30:40,983 INFO L226 Difference]: Without dead ends: 16984 [2021-11-05 19:30:40,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.01ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:30:40,996 INFO L933 BasicCegarLoop]: 5733 mSDtfsCounter, 10863 mSDsluCounter, 7356 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10863 SdHoareTripleChecker+Valid, 13089 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.56ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 220.86ms IncrementalHoareTripleChecker+Time [2021-11-05 19:30:40,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10863 Valid, 13089 Invalid, 59 Unknown, 0 Unchecked, 11.56ms Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 220.86ms Time] [2021-11-05 19:30:41,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16984 states. [2021-11-05 19:30:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16984 to 5904. [2021-11-05 19:30:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5904 states, 5887 states have (on average 1.3339561746220485) internal successors, (7853), 5903 states have internal predecessors, (7853), 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) [2021-11-05 19:30:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5904 states to 5904 states and 7853 transitions. [2021-11-05 19:30:41,275 INFO L78 Accepts]: Start accepts. Automaton has 5904 states and 7853 transitions. Word has length 249 [2021-11-05 19:30:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:30:41,275 INFO L470 AbstractCegarLoop]: Abstraction has 5904 states and 7853 transitions. [2021-11-05 19:30:41,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2021-11-05 19:30:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5904 states and 7853 transitions. [2021-11-05 19:30:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-05 19:30:41,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:30:41,279 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:30:41,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-05 19:30:41,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:30:41,500 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:30:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:30:41,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2008580608, now seen corresponding path program 1 times [2021-11-05 19:30:41,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:30:41,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565551691] [2021-11-05 19:30:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:30:41,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:30:41,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:30:41,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:30:41,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-05 19:30:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:30:48,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:30:48,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:30:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:48,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:30:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:48,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:30:48,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565551691] [2021-11-05 19:30:48,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565551691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:30:48,787 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:30:48,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 19:30:48,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891986735] [2021-11-05 19:30:48,788 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:30:48,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:30:48,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:30:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:30:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:30:48,789 INFO L87 Difference]: Start difference. First operand 5904 states and 7853 transitions. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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) [2021-11-05 19:30:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:30:50,675 INFO L93 Difference]: Finished difference Result 19641 states and 26216 transitions. [2021-11-05 19:30:50,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:30:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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 253 [2021-11-05 19:30:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:30:50,694 INFO L225 Difference]: With dead ends: 19641 [2021-11-05 19:30:50,694 INFO L226 Difference]: Without dead ends: 13888 [2021-11-05 19:30:50,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 87.75ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:30:50,701 INFO L933 BasicCegarLoop]: 5739 mSDtfsCounter, 10295 mSDsluCounter, 17634 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1184.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10295 SdHoareTripleChecker+Valid, 23373 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.41ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1330.27ms IncrementalHoareTripleChecker+Time [2021-11-05 19:30:50,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10295 Valid, 23373 Invalid, 293 Unknown, 0 Unchecked, 18.41ms Time], IncrementalHoareTripleChecker [65 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1330.27ms Time] [2021-11-05 19:30:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13888 states. [2021-11-05 19:30:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13888 to 5916. [2021-11-05 19:30:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5916 states, 5899 states have (on average 1.3332768265807764) internal successors, (7865), 5915 states have internal predecessors, (7865), 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) [2021-11-05 19:30:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5916 states to 5916 states and 7865 transitions. [2021-11-05 19:30:50,948 INFO L78 Accepts]: Start accepts. Automaton has 5916 states and 7865 transitions. Word has length 253 [2021-11-05 19:30:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:30:50,949 INFO L470 AbstractCegarLoop]: Abstraction has 5916 states and 7865 transitions. [2021-11-05 19:30:50,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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) [2021-11-05 19:30:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5916 states and 7865 transitions. [2021-11-05 19:30:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-05 19:30:50,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:30:50,953 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:30:51,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-05 19:30:51,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:30:51,180 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:30:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:30:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1938819241, now seen corresponding path program 1 times [2021-11-05 19:30:51,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:30:51,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995572027] [2021-11-05 19:30:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:30:51,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:30:51,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:30:51,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:30:51,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-05 19:30:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:30:57,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-05 19:30:57,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:30:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:58,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:30:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:30:59,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:30:59,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995572027] [2021-11-05 19:30:59,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995572027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:30:59,645 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:30:59,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 18 [2021-11-05 19:30:59,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072747742] [2021-11-05 19:30:59,645 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:30:59,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 19:30:59,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:30:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 19:30:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-05 19:30:59,646 INFO L87 Difference]: Start difference. First operand 5916 states and 7865 transitions. Second operand has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 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) [2021-11-05 19:31:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:31:15,653 INFO L93 Difference]: Finished difference Result 48546 states and 66066 transitions. [2021-11-05 19:31:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-05 19:31:15,654 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 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 255 [2021-11-05 19:31:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:31:15,720 INFO L225 Difference]: With dead ends: 48546 [2021-11-05 19:31:15,720 INFO L226 Difference]: Without dead ends: 42781 [2021-11-05 19:31:15,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 4154.44ms TimeCoverageRelationStatistics Valid=491, Invalid=1671, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 19:31:15,739 INFO L933 BasicCegarLoop]: 13990 mSDtfsCounter, 61792 mSDsluCounter, 106962 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8843.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61792 SdHoareTripleChecker+Valid, 120952 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 145.38ms SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9887.42ms IncrementalHoareTripleChecker+Time [2021-11-05 19:31:15,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61792 Valid, 120952 Invalid, 2719 Unknown, 0 Unchecked, 145.38ms Time], IncrementalHoareTripleChecker [302 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 9887.42ms Time] [2021-11-05 19:31:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42781 states. [2021-11-05 19:31:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42781 to 5874. [2021-11-05 19:31:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5857 states have (on average 1.3346423083489842) internal successors, (7817), 5873 states have internal predecessors, (7817), 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) [2021-11-05 19:31:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 7817 transitions. [2021-11-05 19:31:16,389 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 7817 transitions. Word has length 255 [2021-11-05 19:31:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:31:16,389 INFO L470 AbstractCegarLoop]: Abstraction has 5874 states and 7817 transitions. [2021-11-05 19:31:16,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.833333333333334) internal successors, (213), 18 states have internal predecessors, (213), 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) [2021-11-05 19:31:16,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 7817 transitions. [2021-11-05 19:31:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-05 19:31:16,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:31:16,393 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:31:16,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-05 19:31:16,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:31:16,608 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:31:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:31:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1582818167, now seen corresponding path program 1 times [2021-11-05 19:31:16,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:31:16,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15347313] [2021-11-05 19:31:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:31:16,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:31:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:31:16,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:31:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-05 19:31:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:31:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:31:23,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:31:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-05 19:31:24,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:31:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-05 19:31:24,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:31:24,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15347313] [2021-11-05 19:31:24,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15347313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:31:24,414 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:31:24,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-05 19:31:24,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688679627] [2021-11-05 19:31:24,415 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:31:24,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:31:24,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:31:24,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:31:24,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:31:24,416 INFO L87 Difference]: Start difference. First operand 5874 states and 7817 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2021-11-05 19:31:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:31:24,948 INFO L93 Difference]: Finished difference Result 11609 states and 15498 transitions. [2021-11-05 19:31:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:31:24,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 259 [2021-11-05 19:31:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:31:24,957 INFO L225 Difference]: With dead ends: 11609 [2021-11-05 19:31:24,957 INFO L226 Difference]: Without dead ends: 5886 [2021-11-05 19:31:24,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:31:24,964 INFO L933 BasicCegarLoop]: 3775 mSDtfsCounter, 0 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7532 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.40ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.85ms IncrementalHoareTripleChecker+Time [2021-11-05 19:31:24,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7532 Invalid, 25 Unknown, 0 Unchecked, 4.40ms Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 164.85ms Time] [2021-11-05 19:31:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-11-05 19:31:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 5880. [2021-11-05 19:31:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 5863 states have (on average 1.3342998464949685) internal successors, (7823), 5879 states have internal predecessors, (7823), 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) [2021-11-05 19:31:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 7823 transitions. [2021-11-05 19:31:25,396 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 7823 transitions. Word has length 259 [2021-11-05 19:31:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:31:25,396 INFO L470 AbstractCegarLoop]: Abstraction has 5880 states and 7823 transitions. [2021-11-05 19:31:25,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2021-11-05 19:31:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 7823 transitions. [2021-11-05 19:31:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-05 19:31:25,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:31:25,400 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:31:25,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-05 19:31:25,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:31:25,608 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:31:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:31:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1408473013, now seen corresponding path program 1 times [2021-11-05 19:31:25,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:31:25,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333731284] [2021-11-05 19:31:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:31:25,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:31:25,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:31:25,613 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:31:25,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-05 19:31:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:31:32,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:31:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:31:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:31:32,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:31:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:31:33,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:31:33,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333731284] [2021-11-05 19:31:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333731284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:31:33,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 19:31:33,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-05 19:31:33,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124853154] [2021-11-05 19:31:33,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 19:31:33,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:31:33,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:31:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:31:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:31:33,205 INFO L87 Difference]: Start difference. First operand 5880 states and 7823 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2021-11-05 19:31:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:31:35,902 INFO L93 Difference]: Finished difference Result 31158 states and 41696 transitions. [2021-11-05 19:31:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 19:31:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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 263 [2021-11-05 19:31:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:31:35,941 INFO L225 Difference]: With dead ends: 31158 [2021-11-05 19:31:35,942 INFO L226 Difference]: Without dead ends: 25429 [2021-11-05 19:31:35,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.24ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:31:35,954 INFO L933 BasicCegarLoop]: 8240 mSDtfsCounter, 17302 mSDsluCounter, 21189 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 617.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17302 SdHoareTripleChecker+Valid, 29429 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.78ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 731.07ms IncrementalHoareTripleChecker+Time [2021-11-05 19:31:35,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17302 Valid, 29429 Invalid, 165 Unknown, 0 Unchecked, 27.78ms Time], IncrementalHoareTripleChecker [36 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 731.07ms Time] [2021-11-05 19:31:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25429 states. [2021-11-05 19:31:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25429 to 5988. [2021-11-05 19:31:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5971 states have (on average 1.3352872215709262) internal successors, (7973), 5987 states have internal predecessors, (7973), 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) [2021-11-05 19:31:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 7973 transitions. [2021-11-05 19:31:36,570 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 7973 transitions. Word has length 263 [2021-11-05 19:31:36,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:31:36,571 INFO L470 AbstractCegarLoop]: Abstraction has 5988 states and 7973 transitions. [2021-11-05 19:31:36,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2021-11-05 19:31:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 7973 transitions. [2021-11-05 19:31:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-05 19:31:36,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:31:36,575 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:31:36,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-05 19:31:36,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:31:36,792 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:31:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:31:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2109537591, now seen corresponding path program 1 times [2021-11-05 19:31:36,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:31:36,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990278054] [2021-11-05 19:31:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:31:36,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:31:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:31:36,796 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:31:36,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-05 19:31:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:31:43,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 19:31:43,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:31:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:31:44,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:31:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:31:44,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:31:44,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990278054] [2021-11-05 19:31:44,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990278054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:31:44,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 19:31:44,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-05 19:31:44,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161789632] [2021-11-05 19:31:44,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 19:31:44,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:31:44,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:31:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:31:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:31:44,508 INFO L87 Difference]: Start difference. First operand 5988 states and 7973 transitions. Second operand has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 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) [2021-11-05 19:31:48,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:31:48,243 INFO L93 Difference]: Finished difference Result 35207 states and 47124 transitions. [2021-11-05 19:31:48,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:31:48,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 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 263 [2021-11-05 19:31:48,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:31:48,285 INFO L225 Difference]: With dead ends: 35207 [2021-11-05 19:31:48,286 INFO L226 Difference]: Without dead ends: 29370 [2021-11-05 19:31:48,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 175.94ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:31:48,296 INFO L933 BasicCegarLoop]: 10756 mSDtfsCounter, 27715 mSDsluCounter, 33437 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 965.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27715 SdHoareTripleChecker+Valid, 44193 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.78ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1130.99ms IncrementalHoareTripleChecker+Time [2021-11-05 19:31:48,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27715 Valid, 44193 Invalid, 257 Unknown, 0 Unchecked, 39.78ms Time], IncrementalHoareTripleChecker [44 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1130.99ms Time] [2021-11-05 19:31:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29370 states. [2021-11-05 19:31:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29370 to 6048. [2021-11-05 19:31:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6048 states, 6031 states have (on average 1.3329464433758913) internal successors, (8039), 6047 states have internal predecessors, (8039), 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) [2021-11-05 19:31:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6048 states to 6048 states and 8039 transitions. [2021-11-05 19:31:48,919 INFO L78 Accepts]: Start accepts. Automaton has 6048 states and 8039 transitions. Word has length 263 [2021-11-05 19:31:48,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:31:48,919 INFO L470 AbstractCegarLoop]: Abstraction has 6048 states and 8039 transitions. [2021-11-05 19:31:48,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 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) [2021-11-05 19:31:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 6048 states and 8039 transitions. [2021-11-05 19:31:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-05 19:31:48,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:31:48,923 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:31:48,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-05 19:31:49,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:31:49,128 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:31:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:31:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 888107422, now seen corresponding path program 1 times [2021-11-05 19:31:49,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:31:49,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644143087] [2021-11-05 19:31:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:31:49,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:31:49,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:31:49,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:31:49,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-05 19:31:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:31:55,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-05 19:31:55,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:31:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:31:56,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:31:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:31:56,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:31:56,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644143087] [2021-11-05 19:31:56,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644143087] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:31:56,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:31:56,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-05 19:31:56,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582302190] [2021-11-05 19:31:56,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:31:56,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 19:31:56,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:31:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 19:31:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-05 19:31:56,841 INFO L87 Difference]: Start difference. First operand 6048 states and 8039 transitions. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2021-11-05 19:32:02,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:02,887 INFO L93 Difference]: Finished difference Result 37967 states and 50839 transitions. [2021-11-05 19:32:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 19:32:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 267 [2021-11-05 19:32:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:02,942 INFO L225 Difference]: With dead ends: 37967 [2021-11-05 19:32:02,942 INFO L226 Difference]: Without dead ends: 32070 [2021-11-05 19:32:02,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 992.39ms TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-11-05 19:32:02,957 INFO L933 BasicCegarLoop]: 8452 mSDtfsCounter, 45197 mSDsluCounter, 110103 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1738.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45197 SdHoareTripleChecker+Valid, 118555 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1904.55ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:02,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45197 Valid, 118555 Invalid, 676 Unknown, 0 Unchecked, 98.53ms Time], IncrementalHoareTripleChecker [1 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1904.55ms Time] [2021-11-05 19:32:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32070 states. [2021-11-05 19:32:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32070 to 6056. [2021-11-05 19:32:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6039 states have (on average 1.3325053816857095) internal successors, (8047), 6055 states have internal predecessors, (8047), 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) [2021-11-05 19:32:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 8047 transitions. [2021-11-05 19:32:03,888 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 8047 transitions. Word has length 267 [2021-11-05 19:32:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:03,889 INFO L470 AbstractCegarLoop]: Abstraction has 6056 states and 8047 transitions. [2021-11-05 19:32:03,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2021-11-05 19:32:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 8047 transitions. [2021-11-05 19:32:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-05 19:32:03,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:03,893 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:32:03,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-05 19:32:04,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:32:04,096 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:32:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1043500114, now seen corresponding path program 1 times [2021-11-05 19:32:04,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:32:04,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714296840] [2021-11-05 19:32:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:04,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:32:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:32:04,100 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:32:04,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-05 19:32:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:10,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 19:32:10,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:32:11,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:32:11,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:32:11,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714296840] [2021-11-05 19:32:11,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714296840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:11,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:11,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-05 19:32:11,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755285032] [2021-11-05 19:32:11,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:11,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:32:11,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:32:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:32:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:11,959 INFO L87 Difference]: Start difference. First operand 6056 states and 8047 transitions. Second operand has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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) [2021-11-05 19:32:14,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:32:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:19,968 INFO L93 Difference]: Finished difference Result 40056 states and 53683 transitions. [2021-11-05 19:32:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:32:19,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 279 [2021-11-05 19:32:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:20,030 INFO L225 Difference]: With dead ends: 40056 [2021-11-05 19:32:20,030 INFO L226 Difference]: Without dead ends: 34151 [2021-11-05 19:32:20,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 314.72ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-05 19:32:20,045 INFO L933 BasicCegarLoop]: 7456 mSDtfsCounter, 30359 mSDsluCounter, 41983 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3267.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30359 SdHoareTripleChecker+Valid, 49439 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.90ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3475.81ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:20,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30359 Valid, 49439 Invalid, 364 Unknown, 0 Unchecked, 56.90ms Time], IncrementalHoareTripleChecker [18 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 3475.81ms Time] [2021-11-05 19:32:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34151 states. [2021-11-05 19:32:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34151 to 6062. [2021-11-05 19:32:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6062 states, 6045 states have (on average 1.3321753515301902) internal successors, (8053), 6061 states have internal predecessors, (8053), 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) [2021-11-05 19:32:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8053 transitions. [2021-11-05 19:32:21,114 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8053 transitions. Word has length 279 [2021-11-05 19:32:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:21,114 INFO L470 AbstractCegarLoop]: Abstraction has 6062 states and 8053 transitions. [2021-11-05 19:32:21,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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) [2021-11-05 19:32:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8053 transitions. [2021-11-05 19:32:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-05 19:32:21,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:21,119 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:32:21,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-05 19:32:21,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:32:21,332 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:32:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1346829590, now seen corresponding path program 1 times [2021-11-05 19:32:21,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:32:21,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120087835] [2021-11-05 19:32:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:21,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:32:21,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:32:21,337 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:32:21,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-05 19:32:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:28,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-05 19:32:28,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:28,918 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:32:28,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:32:29,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:32:29,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120087835] [2021-11-05 19:32:29,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120087835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:29,468 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:29,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-05 19:32:29,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600775661] [2021-11-05 19:32:29,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:29,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 19:32:29,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:32:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 19:32:29,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:32:29,470 INFO L87 Difference]: Start difference. First operand 6062 states and 8053 transitions. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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) [2021-11-05 19:32:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:38,126 INFO L93 Difference]: Finished difference Result 51368 states and 68849 transitions. [2021-11-05 19:32:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 19:32:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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 285 [2021-11-05 19:32:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:38,185 INFO L225 Difference]: With dead ends: 51368 [2021-11-05 19:32:38,185 INFO L226 Difference]: Without dead ends: 45457 [2021-11-05 19:32:38,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 567.76ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-05 19:32:38,202 INFO L933 BasicCegarLoop]: 7085 mSDtfsCounter, 49557 mSDsluCounter, 45214 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1214.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49557 SdHoareTripleChecker+Valid, 52299 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.50ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1414.83ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:38,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49557 Valid, 52299 Invalid, 372 Unknown, 0 Unchecked, 73.50ms Time], IncrementalHoareTripleChecker [62 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1414.83ms Time] [2021-11-05 19:32:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45457 states. [2021-11-05 19:32:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45457 to 6067. [2021-11-05 19:32:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 6050 states have (on average 1.331900826446281) internal successors, (8058), 6066 states have internal predecessors, (8058), 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) [2021-11-05 19:32:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 8058 transitions. [2021-11-05 19:32:39,488 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 8058 transitions. Word has length 285 [2021-11-05 19:32:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:39,488 INFO L470 AbstractCegarLoop]: Abstraction has 6067 states and 8058 transitions. [2021-11-05 19:32:39,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 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) [2021-11-05 19:32:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 8058 transitions. [2021-11-05 19:32:39,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-05 19:32:39,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:39,492 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:32:39,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:39,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:32:39,694 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:32:39,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1694153981, now seen corresponding path program 1 times [2021-11-05 19:32:39,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:32:39,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67127858] [2021-11-05 19:32:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:39,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:32:39,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:32:39,698 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:32:39,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-05 19:32:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:46,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-05 19:32:46,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:32:47,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:32:47,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:32:47,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67127858] [2021-11-05 19:32:47,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67127858] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:47,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:47,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-05 19:32:47,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629774493] [2021-11-05 19:32:47,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:47,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 19:32:47,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:32:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 19:32:47,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-05 19:32:47,862 INFO L87 Difference]: Start difference. First operand 6067 states and 8058 transitions. Second operand has 16 states, 16 states have (on average 15.875) internal successors, (254), 16 states have internal predecessors, (254), 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) [2021-11-05 19:32:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:57,958 INFO L93 Difference]: Finished difference Result 43121 states and 57693 transitions. [2021-11-05 19:32:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 19:32:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.875) internal successors, (254), 16 states have internal predecessors, (254), 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 286 [2021-11-05 19:32:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:58,009 INFO L225 Difference]: With dead ends: 43121 [2021-11-05 19:32:58,009 INFO L226 Difference]: Without dead ends: 37205 [2021-11-05 19:32:58,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1403.38ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 19:32:58,022 INFO L933 BasicCegarLoop]: 13016 mSDtfsCounter, 68017 mSDsluCounter, 97598 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1560.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68017 SdHoareTripleChecker+Valid, 110614 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 117.20ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1749.48ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:58,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68017 Valid, 110614 Invalid, 539 Unknown, 0 Unchecked, 117.20ms Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1749.48ms Time] [2021-11-05 19:32:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37205 states. [2021-11-05 19:32:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37205 to 6067. [2021-11-05 19:32:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 6050 states have (on average 1.331900826446281) internal successors, (8058), 6066 states have internal predecessors, (8058), 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) [2021-11-05 19:32:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 8058 transitions. [2021-11-05 19:32:59,334 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 8058 transitions. Word has length 286 [2021-11-05 19:32:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:59,334 INFO L470 AbstractCegarLoop]: Abstraction has 6067 states and 8058 transitions. [2021-11-05 19:32:59,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.875) internal successors, (254), 16 states have internal predecessors, (254), 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) [2021-11-05 19:32:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 8058 transitions. [2021-11-05 19:32:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-05 19:32:59,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:59,337 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:32:59,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:59,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:32:59,538 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:32:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:59,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2097670517, now seen corresponding path program 2 times [2021-11-05 19:32:59,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:32:59,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940173859] [2021-11-05 19:32:59,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:32:59,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:32:59,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:32:59,543 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:32:59,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-05 19:33:01,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:33:01,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:33:01,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:33:01,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:33:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-05 19:33:03,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:33:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-05 19:33:05,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:33:05,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940173859] [2021-11-05 19:33:05,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940173859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:33:05,004 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:33:05,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-05 19:33:05,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447672922] [2021-11-05 19:33:05,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:33:05,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:33:05,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:33:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:33:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:33:05,005 INFO L87 Difference]: Start difference. First operand 6067 states and 8058 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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) [2021-11-05 19:33:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:33:06,334 INFO L93 Difference]: Finished difference Result 6067 states and 8058 transitions. [2021-11-05 19:33:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:33:06,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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 291 [2021-11-05 19:33:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:33:06,342 INFO L225 Difference]: With dead ends: 6067 [2021-11-05 19:33:06,343 INFO L226 Difference]: Without dead ends: 6049 [2021-11-05 19:33:06,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:33:06,344 INFO L933 BasicCegarLoop]: 3751 mSDtfsCounter, 2413 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2413 SdHoareTripleChecker+Valid, 4843 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.65ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.57ms IncrementalHoareTripleChecker+Time [2021-11-05 19:33:06,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2413 Valid, 4843 Invalid, 68 Unknown, 0 Unchecked, 5.65ms Time], IncrementalHoareTripleChecker [26 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 193.57ms Time] [2021-11-05 19:33:06,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6049 states. [2021-11-05 19:33:07,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6049 to 6049. [2021-11-05 19:33:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6049 states, 6041 states have (on average 1.3294156596589968) internal successors, (8031), 6048 states have internal predecessors, (8031), 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) [2021-11-05 19:33:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6049 states to 6049 states and 8031 transitions. [2021-11-05 19:33:07,491 INFO L78 Accepts]: Start accepts. Automaton has 6049 states and 8031 transitions. Word has length 291 [2021-11-05 19:33:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:33:07,491 INFO L470 AbstractCegarLoop]: Abstraction has 6049 states and 8031 transitions. [2021-11-05 19:33:07,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 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) [2021-11-05 19:33:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6049 states and 8031 transitions. [2021-11-05 19:33:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-05 19:33:07,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:33:07,495 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:33:07,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-05 19:33:07,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:33:07,697 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:33:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:33:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -788066670, now seen corresponding path program 1 times [2021-11-05 19:33:07,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:33:07,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560014893] [2021-11-05 19:33:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:33:07,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:33:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:33:07,701 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:33:07,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-05 19:33:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:33:15,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:33:15,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:33:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:33:15,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:33:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:33:15,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:33:15,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560014893] [2021-11-05 19:33:15,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560014893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:33:15,987 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:33:15,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-05 19:33:15,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918184666] [2021-11-05 19:33:15,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:33:15,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 19:33:15,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:33:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 19:33:15,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:33:15,989 INFO L87 Difference]: Start difference. First operand 6049 states and 8031 transitions. Second operand has 10 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 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) [2021-11-05 19:33:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:33:23,692 INFO L93 Difference]: Finished difference Result 30433 states and 40874 transitions. [2021-11-05 19:33:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 19:33:23,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 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 293 [2021-11-05 19:33:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:33:23,726 INFO L225 Difference]: With dead ends: 30433 [2021-11-05 19:33:23,726 INFO L226 Difference]: Without dead ends: 24535 [2021-11-05 19:33:23,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 482.28ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-05 19:33:23,737 INFO L933 BasicCegarLoop]: 7634 mSDtfsCounter, 36436 mSDsluCounter, 36799 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2117.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36436 SdHoareTripleChecker+Valid, 44433 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.69ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2378.77ms IncrementalHoareTripleChecker+Time [2021-11-05 19:33:23,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36436 Valid, 44433 Invalid, 447 Unknown, 0 Unchecked, 49.69ms Time], IncrementalHoareTripleChecker [117 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 2378.77ms Time] [2021-11-05 19:33:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24535 states. [2021-11-05 19:33:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24535 to 6061. [2021-11-05 19:33:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 6053 states have (on average 1.3287625970593093) internal successors, (8043), 6060 states have internal predecessors, (8043), 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) [2021-11-05 19:33:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 8043 transitions. [2021-11-05 19:33:25,099 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 8043 transitions. Word has length 293 [2021-11-05 19:33:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:33:25,100 INFO L470 AbstractCegarLoop]: Abstraction has 6061 states and 8043 transitions. [2021-11-05 19:33:25,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.8) internal successors, (248), 10 states have internal predecessors, (248), 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) [2021-11-05 19:33:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 8043 transitions. [2021-11-05 19:33:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-05 19:33:25,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:33:25,104 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:33:25,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-05 19:33:25,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:33:25,325 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:33:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:33:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1090043491, now seen corresponding path program 1 times [2021-11-05 19:33:25,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:33:25,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610392386] [2021-11-05 19:33:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:33:25,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:33:25,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:33:25,330 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:33:25,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-05 19:33:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:33:32,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-05 19:33:32,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:33:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:33:33,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:33:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:33:33,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:33:33,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610392386] [2021-11-05 19:33:33,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610392386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:33:33,970 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:33:33,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-05 19:33:33,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474894358] [2021-11-05 19:33:33,970 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:33:33,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 19:33:33,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:33:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 19:33:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:33:33,971 INFO L87 Difference]: Start difference. First operand 6061 states and 8043 transitions. Second operand has 10 states, 10 states have (on average 25.2) internal successors, (252), 10 states have internal predecessors, (252), 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) [2021-11-05 19:33:37,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:33:39,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:33:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:33:45,657 INFO L93 Difference]: Finished difference Result 30573 states and 40752 transitions. [2021-11-05 19:33:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 19:33:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.2) internal successors, (252), 10 states have internal predecessors, (252), 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 297 [2021-11-05 19:33:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:33:45,691 INFO L225 Difference]: With dead ends: 30573 [2021-11-05 19:33:45,691 INFO L226 Difference]: Without dead ends: 24663 [2021-11-05 19:33:45,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 572.39ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-05 19:33:45,703 INFO L933 BasicCegarLoop]: 10507 mSDtfsCounter, 26653 mSDsluCounter, 59928 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5834.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26653 SdHoareTripleChecker+Valid, 70435 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.04ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6144.25ms IncrementalHoareTripleChecker+Time [2021-11-05 19:33:45,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26653 Valid, 70435 Invalid, 556 Unknown, 0 Unchecked, 100.04ms Time], IncrementalHoareTripleChecker [27 Valid, 527 Invalid, 2 Unknown, 0 Unchecked, 6144.25ms Time] [2021-11-05 19:33:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24663 states. [2021-11-05 19:33:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24663 to 6066. [2021-11-05 19:33:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 6058 states have (on average 1.3284912512380322) internal successors, (8048), 6065 states have internal predecessors, (8048), 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) [2021-11-05 19:33:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 8048 transitions. [2021-11-05 19:33:47,066 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 8048 transitions. Word has length 297 [2021-11-05 19:33:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:33:47,066 INFO L470 AbstractCegarLoop]: Abstraction has 6066 states and 8048 transitions. [2021-11-05 19:33:47,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.2) internal successors, (252), 10 states have internal predecessors, (252), 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) [2021-11-05 19:33:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 8048 transitions. [2021-11-05 19:33:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-05 19:33:47,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:33:47,070 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:33:47,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-05 19:33:47,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:33:47,271 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:33:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:33:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1832454096, now seen corresponding path program 1 times [2021-11-05 19:33:47,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:33:47,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267570561] [2021-11-05 19:33:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:33:47,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:33:47,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:33:47,275 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:33:47,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-05 19:33:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:33:54,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:33:54,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:33:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:33:54,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:33:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-05 19:33:55,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:33:55,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267570561] [2021-11-05 19:33:55,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267570561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:33:55,387 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:33:55,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:33:55,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512584336] [2021-11-05 19:33:55,387 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:33:55,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:33:55,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:33:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:33:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:33:55,388 INFO L87 Difference]: Start difference. First operand 6066 states and 8048 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2021-11-05 19:33:57,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:34:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:34:00,349 INFO L93 Difference]: Finished difference Result 16675 states and 22262 transitions. [2021-11-05 19:34:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:34:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 309 [2021-11-05 19:34:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:34:00,361 INFO L225 Difference]: With dead ends: 16675 [2021-11-05 19:34:00,361 INFO L226 Difference]: Without dead ends: 10760 [2021-11-05 19:34:00,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.65ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:34:00,367 INFO L933 BasicCegarLoop]: 6286 mSDtfsCounter, 6155 mSDsluCounter, 6081 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 111 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2727.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6155 SdHoareTripleChecker+Valid, 12367 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.18ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2853.67ms IncrementalHoareTripleChecker+Time [2021-11-05 19:34:00,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6155 Valid, 12367 Invalid, 279 Unknown, 0 Unchecked, 14.18ms Time], IncrementalHoareTripleChecker [111 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 2853.67ms Time] [2021-11-05 19:34:00,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10760 states. [2021-11-05 19:34:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10760 to 10396. [2021-11-05 19:34:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10396 states, 10388 states have (on average 1.3353869849826723) internal successors, (13872), 10395 states have internal predecessors, (13872), 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) [2021-11-05 19:34:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10396 states to 10396 states and 13872 transitions. [2021-11-05 19:34:02,461 INFO L78 Accepts]: Start accepts. Automaton has 10396 states and 13872 transitions. Word has length 309 [2021-11-05 19:34:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:34:02,462 INFO L470 AbstractCegarLoop]: Abstraction has 10396 states and 13872 transitions. [2021-11-05 19:34:02,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2021-11-05 19:34:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 10396 states and 13872 transitions. [2021-11-05 19:34:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-05 19:34:02,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:34:02,468 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:34:02,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-05 19:34:02,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:34:02,684 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 19:34:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:34:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1448556958, now seen corresponding path program 1 times [2021-11-05 19:34:02,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:34:02,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600657903] [2021-11-05 19:34:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:34:02,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:34:02,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:34:02,688 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:34:02,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-05 19:34:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:34:10,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:34:10,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:34:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-05 19:34:10,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:34:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-05 19:34:11,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:34:11,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600657903] [2021-11-05 19:34:11,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600657903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:34:11,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:34:11,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:34:11,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748998874] [2021-11-05 19:34:11,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:34:11,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:34:11,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:34:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:34:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:34:11,129 INFO L87 Difference]: Start difference. First operand 10396 states and 13872 transitions. Second operand has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2021-11-05 19:34:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:34:14,706 INFO L93 Difference]: Finished difference Result 16775 states and 22514 transitions. [2021-11-05 19:34:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:34:14,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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 329 [2021-11-05 19:34:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:34:14,707 INFO L225 Difference]: With dead ends: 16775 [2021-11-05 19:34:14,707 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 19:34:14,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.39ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:34:14,718 INFO L933 BasicCegarLoop]: 6116 mSDtfsCounter, 2621 mSDsluCounter, 6940 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 13056 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.98ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.51ms IncrementalHoareTripleChecker+Time [2021-11-05 19:34:14,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2621 Valid, 13056 Invalid, 64 Unknown, 0 Unchecked, 9.98ms Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 168.51ms Time] [2021-11-05 19:34:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 19:34:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 19:34:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-05 19:34:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 19:34:14,719 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 329 [2021-11-05 19:34:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:34:14,719 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 19:34:14,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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) [2021-11-05 19:34:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 19:34:14,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 19:34:14,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (16 of 17 remaining) [2021-11-05 19:34:14,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (15 of 17 remaining) [2021-11-05 19:34:14,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (14 of 17 remaining) [2021-11-05 19:34:14,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (13 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (12 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (11 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (10 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (9 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (8 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (7 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (6 of 17 remaining) [2021-11-05 19:34:14,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (5 of 17 remaining) [2021-11-05 19:34:14,724 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (4 of 17 remaining) [2021-11-05 19:34:14,724 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (3 of 17 remaining) [2021-11-05 19:34:14,724 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (2 of 17 remaining) [2021-11-05 19:34:14,724 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (1 of 17 remaining) [2021-11-05 19:34:14,724 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION (0 of 17 remaining) [2021-11-05 19:34:14,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-05 19:34:14,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:34:14,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-05 19:37:28,464 WARN L230 SmtUtils]: Spent 3.23m on a formula simplification. DAG size of input: 205 DAG size of output: 198 Killed by 15