./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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-32_7a-drivers--md--dm-raid.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 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:59:56,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:59:56,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:59:56,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:59:56,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:59:56,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:59:56,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:59:56,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:59:56,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:59:56,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:59:56,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:59:56,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:59:56,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:59:56,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:59:56,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:59:56,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:59:56,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:59:56,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:59:56,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:59:56,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:59:56,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:59:56,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:59:56,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:59:56,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:59:56,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:59:56,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:59:56,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:59:56,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:59:56,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:59:56,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:59:56,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:59:56,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:59:56,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:59:56,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:59:56,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:59:56,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:59:56,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:59:56,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:59:56,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:59:56,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:59:56,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:59:56,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:59:56,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:59:56,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:59:56,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:59:56,341 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:59:56,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:59:56,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:59:56,342 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:59:56,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:59:56,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:59:56,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:59:56,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:59:56,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:59:56,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:59:56,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:59:56,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:59:56,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:59:56,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:59:56,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:59:56,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:59:56,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:59:56,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:59:56,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:59:56,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:59:56,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:59:56,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:59:56,347 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:59:56,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:59:56,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:59:56,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:59:56,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62515c851d4d8c80398352da8857a26e67ae776a292d33d62b0afdc92addb3ad [2021-11-07 14:59:56,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:59:56,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:59:56,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:59:56,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:59:56,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:59:56,554 INFO L432 ainManager$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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-07 14:59:56,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77737dd7/d74540ca45344872afec5d08327b8e53/FLAG86d4f424f [2021-11-07 14:59:57,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:59:57,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-07 14:59:57,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77737dd7/d74540ca45344872afec5d08327b8e53/FLAG86d4f424f [2021-11-07 14:59:57,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f77737dd7/d74540ca45344872afec5d08327b8e53 [2021-11-07 14:59:57,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:59:57,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:59:57,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:59:57,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:59:57,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:59:57,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:59:57" (1/1) ... [2021-11-07 14:59:57,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b71688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:57, skipping insertion in model container [2021-11-07 14:59:57,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:59:57" (1/1) ... [2021-11-07 14:59:57,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:59:57,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:59:58,607 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-07 14:59:58,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:59:58,709 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:59:58,933 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-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i[217361,217374] [2021-11-07 14:59:58,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:59:58,986 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:59:58,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58 WrapperNode [2021-11-07 14:59:58,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:59:58,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:59:58,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:59:58,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:59:58,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:59:59,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:59:59,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:59:59,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:59:59,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:59:59,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:59:59,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:59:59,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:59:59,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (1/1) ... [2021-11-07 14:59:59,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:59:59,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:59:59,655 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) [2021-11-07 14:59:59,675 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 [2021-11-07 14:59:59,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:59:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:59:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:59:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:59:59,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:59:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:59:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:59:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:59:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:59:59,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:59:59,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:00:20,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:00:20,945 INFO L299 CfgBuilder]: Removed 1242 assume(true) statements. [2021-11-07 15:00:20,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:00:20 BoogieIcfgContainer [2021-11-07 15:00:20,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:00:20,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:00:20,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:00:20,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:00:20,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:59:57" (1/3) ... [2021-11-07 15:00:20,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7e7c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:00:20, skipping insertion in model container [2021-11-07 15:00:20,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:58" (2/3) ... [2021-11-07 15:00:20,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7e7c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:00:20, skipping insertion in model container [2021-11-07 15:00:20,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:00:20" (3/3) ... [2021-11-07 15:00:20,954 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--md--dm-raid.ko-entry_point.cil.out.i [2021-11-07 15:00:20,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:00:20,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 15:00:20,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:00:20,995 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 [2021-11-07 15:00:20,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 15:00:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 15:00:21,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:21,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:21,042 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2042928576, now seen corresponding path program 1 times [2021-11-07 15:00:21,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:21,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013215692] [2021-11-07 15:00:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:21,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:21,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:21,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013215692] [2021-11-07 15:00:21,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013215692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:21,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:21,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:21,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104174807] [2021-11-07 15:00:21,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:21,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:00:21,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:00:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:00:21,560 INFO L87 Difference]: Start difference. First operand has 1974 states, 1968 states have (on average 1.4659552845528456) internal successors, (2885), 1973 states have internal predecessors, (2885), 0 states have call successors, (0), 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 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:21,645 INFO L93 Difference]: Finished difference Result 3944 states and 5765 transitions. [2021-11-07 15:00:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:00:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 15:00:21,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:21,666 INFO L225 Difference]: With dead ends: 3944 [2021-11-07 15:00:21,667 INFO L226 Difference]: Without dead ends: 1965 [2021-11-07 15:00:21,675 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 [2021-11-07 15:00:21,678 INFO L933 BasicCegarLoop]: 2867 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, 2867 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:21,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 11.36ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:00:21,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-11-07 15:00:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1965. [2021-11-07 15:00:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1960 states have (on average 1.4556122448979592) internal successors, (2853), 1964 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2853 transitions. [2021-11-07 15:00:21,818 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2853 transitions. Word has length 66 [2021-11-07 15:00:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:21,819 INFO L470 AbstractCegarLoop]: Abstraction has 1965 states and 2853 transitions. [2021-11-07 15:00:21,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2853 transitions. [2021-11-07 15:00:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 15:00:21,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:21,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:00:21,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:00:21,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1498030002, now seen corresponding path program 1 times [2021-11-07 15:00:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:21,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915629072] [2021-11-07 15:00:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:21,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:22,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:22,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915629072] [2021-11-07 15:00:22,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915629072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:22,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:22,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:22,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050183426] [2021-11-07 15:00:22,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:22,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:22,080 INFO L87 Difference]: Start difference. First operand 1965 states and 2853 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:24,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:00:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:24,400 INFO L93 Difference]: Finished difference Result 5761 states and 8411 transitions. [2021-11-07 15:00:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:24,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 15:00:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:24,413 INFO L225 Difference]: With dead ends: 5761 [2021-11-07 15:00:24,413 INFO L226 Difference]: Without dead ends: 3853 [2021-11-07 15:00:24,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:24,416 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 2763 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2096.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2763 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.97ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2242.36ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:24,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2763 Valid, 5689 Invalid, 15 Unknown, 0 Unchecked, 10.97ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2242.36ms Time] [2021-11-07 15:00:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-11-07 15:00:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2021-11-07 15:00:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3846 states have (on average 1.4607384295371815) internal successors, (5618), 3850 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5618 transitions. [2021-11-07 15:00:24,495 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5618 transitions. Word has length 66 [2021-11-07 15:00:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:24,495 INFO L470 AbstractCegarLoop]: Abstraction has 3851 states and 5618 transitions. [2021-11-07 15:00:24,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:24,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5618 transitions. [2021-11-07 15:00:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 15:00:24,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:24,501 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] [2021-11-07 15:00:24,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:00:24,503 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:24,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1146020226, now seen corresponding path program 1 times [2021-11-07 15:00:24,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:24,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640715792] [2021-11-07 15:00:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:24,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:24,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:24,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640715792] [2021-11-07 15:00:24,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640715792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:24,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:24,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:24,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414754087] [2021-11-07 15:00:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:24,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:24,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:24,709 INFO L87 Difference]: Start difference. First operand 3851 states and 5618 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:24,794 INFO L93 Difference]: Finished difference Result 3851 states and 5618 transitions. [2021-11-07 15:00:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 15:00:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:24,809 INFO L225 Difference]: With dead ends: 3851 [2021-11-07 15:00:24,810 INFO L226 Difference]: Without dead ends: 3849 [2021-11-07 15:00:24,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:24,812 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 2783 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.90ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:24,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2783 Valid, 2850 Invalid, 1 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.90ms Time] [2021-11-07 15:00:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3849 states. [2021-11-07 15:00:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3849 to 3849. [2021-11-07 15:00:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3845 states have (on average 1.460598179453836) internal successors, (5616), 3848 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 5616 transitions. [2021-11-07 15:00:24,873 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 5616 transitions. Word has length 70 [2021-11-07 15:00:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:24,874 INFO L470 AbstractCegarLoop]: Abstraction has 3849 states and 5616 transitions. [2021-11-07 15:00:24,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 5616 transitions. [2021-11-07 15:00:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 15:00:24,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:24,875 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] [2021-11-07 15:00:24,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:00:24,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1166875682, now seen corresponding path program 1 times [2021-11-07 15:00:24,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:24,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562298824] [2021-11-07 15:00:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:24,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:25,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:25,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562298824] [2021-11-07 15:00:25,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562298824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:25,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:25,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:25,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613261231] [2021-11-07 15:00:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:25,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:25,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:25,024 INFO L87 Difference]: Start difference. First operand 3849 states and 5616 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:25,071 INFO L93 Difference]: Finished difference Result 3849 states and 5616 transitions. [2021-11-07 15:00:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:25,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-07 15:00:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:25,081 INFO L225 Difference]: With dead ends: 3849 [2021-11-07 15:00:25,081 INFO L226 Difference]: Without dead ends: 3847 [2021-11-07 15:00:25,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:25,083 INFO L933 BasicCegarLoop]: 2848 mSDtfsCounter, 2780 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.31ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:25,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2848 Invalid, 1 Unknown, 0 Unchecked, 4.19ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.31ms Time] [2021-11-07 15:00:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2021-11-07 15:00:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3847. [2021-11-07 15:00:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 3844 states have (on average 1.4604578563995838) internal successors, (5614), 3846 states have internal predecessors, (5614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5614 transitions. [2021-11-07 15:00:25,193 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5614 transitions. Word has length 71 [2021-11-07 15:00:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:25,193 INFO L470 AbstractCegarLoop]: Abstraction has 3847 states and 5614 transitions. [2021-11-07 15:00:25,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5614 transitions. [2021-11-07 15:00:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 15:00:25,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:25,194 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] [2021-11-07 15:00:25,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:00:25,195 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1813394808, now seen corresponding path program 1 times [2021-11-07 15:00:25,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:25,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320323791] [2021-11-07 15:00:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:25,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:25,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:25,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320323791] [2021-11-07 15:00:25,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320323791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:25,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:25,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:25,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308608248] [2021-11-07 15:00:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:25,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:25,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:25,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:25,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:25,349 INFO L87 Difference]: Start difference. First operand 3847 states and 5614 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:25,398 INFO L93 Difference]: Finished difference Result 3847 states and 5614 transitions. [2021-11-07 15:00:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:25,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-07 15:00:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:25,409 INFO L225 Difference]: With dead ends: 3847 [2021-11-07 15:00:25,409 INFO L226 Difference]: Without dead ends: 3845 [2021-11-07 15:00:25,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:25,411 INFO L933 BasicCegarLoop]: 2846 mSDtfsCounter, 2777 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.32ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:25,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 2846 Invalid, 1 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.32ms Time] [2021-11-07 15:00:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2021-11-07 15:00:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3845. [2021-11-07 15:00:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3843 states have (on average 1.4603174603174602) internal successors, (5612), 3844 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5612 transitions. [2021-11-07 15:00:25,479 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5612 transitions. Word has length 72 [2021-11-07 15:00:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:25,481 INFO L470 AbstractCegarLoop]: Abstraction has 3845 states and 5612 transitions. [2021-11-07 15:00:25,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5612 transitions. [2021-11-07 15:00:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 15:00:25,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:25,486 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] [2021-11-07 15:00:25,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:00:25,486 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -380651224, now seen corresponding path program 1 times [2021-11-07 15:00:25,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:25,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409542259] [2021-11-07 15:00:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:25,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:25,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:25,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409542259] [2021-11-07 15:00:25,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409542259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:25,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:25,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:00:25,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663777931] [2021-11-07 15:00:25,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:25,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:25,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:25,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:25,641 INFO L87 Difference]: Start difference. First operand 3845 states and 5612 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:25,751 INFO L93 Difference]: Finished difference Result 7615 states and 11138 transitions. [2021-11-07 15:00:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:25,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-07 15:00:25,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:25,784 INFO L225 Difference]: With dead ends: 7615 [2021-11-07 15:00:25,785 INFO L226 Difference]: Without dead ends: 7606 [2021-11-07 15:00:25,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:25,789 INFO L933 BasicCegarLoop]: 2846 mSDtfsCounter, 2761 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 5625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.79ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:25,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 5625 Invalid, 6 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 11.79ms Time] [2021-11-07 15:00:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-11-07 15:00:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7606. [2021-11-07 15:00:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7606 states, 7604 states have (on average 1.4631772751183587) internal successors, (11126), 7605 states have internal predecessors, (11126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7606 states to 7606 states and 11126 transitions. [2021-11-07 15:00:25,979 INFO L78 Accepts]: Start accepts. Automaton has 7606 states and 11126 transitions. Word has length 73 [2021-11-07 15:00:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:25,980 INFO L470 AbstractCegarLoop]: Abstraction has 7606 states and 11126 transitions. [2021-11-07 15:00:25,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7606 states and 11126 transitions. [2021-11-07 15:00:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 15:00:25,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:25,987 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 15:00:25,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:00:25,987 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1086031317, now seen corresponding path program 1 times [2021-11-07 15:00:25,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:25,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242503429] [2021-11-07 15:00:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:25,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:26,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:26,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242503429] [2021-11-07 15:00:26,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242503429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:26,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:26,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:26,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473843855] [2021-11-07 15:00:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:26,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:26,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:26,128 INFO L87 Difference]: Start difference. First operand 7606 states and 11126 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:26,613 INFO L93 Difference]: Finished difference Result 15302 states and 22402 transitions. [2021-11-07 15:00:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:26,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-11-07 15:00:26,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:26,627 INFO L225 Difference]: With dead ends: 15302 [2021-11-07 15:00:26,627 INFO L226 Difference]: Without dead ends: 7753 [2021-11-07 15:00:26,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:26,639 INFO L933 BasicCegarLoop]: 2856 mSDtfsCounter, 119 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 5522 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 340.96ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:26,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 5522 Invalid, 119 Unknown, 0 Unchecked, 5.57ms Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 340.96ms Time] [2021-11-07 15:00:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7753 states. [2021-11-07 15:00:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7753 to 7746. [2021-11-07 15:00:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 7744 states have (on average 1.4630681818181819) internal successors, (11330), 7745 states have internal predecessors, (11330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 11330 transitions. [2021-11-07 15:00:26,788 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 11330 transitions. Word has length 138 [2021-11-07 15:00:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:26,788 INFO L470 AbstractCegarLoop]: Abstraction has 7746 states and 11330 transitions. [2021-11-07 15:00:26,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 11330 transitions. [2021-11-07 15:00:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 15:00:26,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:26,797 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:26,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 15:00:26,797 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -66254471, now seen corresponding path program 1 times [2021-11-07 15:00:26,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:26,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508816948] [2021-11-07 15:00:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:26,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:27,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:27,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508816948] [2021-11-07 15:00:27,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508816948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:27,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:27,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:27,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322447165] [2021-11-07 15:00:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:27,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:27,026 INFO L87 Difference]: Start difference. First operand 7746 states and 11330 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:27,175 INFO L93 Difference]: Finished difference Result 15439 states and 22604 transitions. [2021-11-07 15:00:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 149 [2021-11-07 15:00:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:27,188 INFO L225 Difference]: With dead ends: 15439 [2021-11-07 15:00:27,188 INFO L226 Difference]: Without dead ends: 7750 [2021-11-07 15:00:27,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:27,199 INFO L933 BasicCegarLoop]: 2846 mSDtfsCounter, 0 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.67ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:27,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5687 Invalid, 6 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 15.67ms Time] [2021-11-07 15:00:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7750 states. [2021-11-07 15:00:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7750 to 7750. [2021-11-07 15:00:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7748 states have (on average 1.4628291171915333) internal successors, (11334), 7749 states have internal predecessors, (11334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 11334 transitions. [2021-11-07 15:00:27,347 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 11334 transitions. Word has length 149 [2021-11-07 15:00:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:27,348 INFO L470 AbstractCegarLoop]: Abstraction has 7750 states and 11334 transitions. [2021-11-07 15:00:27,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 11334 transitions. [2021-11-07 15:00:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-07 15:00:27,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:27,357 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:27,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 15:00:27,358 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash 135569463, now seen corresponding path program 1 times [2021-11-07 15:00:27,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:27,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627620811] [2021-11-07 15:00:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:27,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:27,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:27,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627620811] [2021-11-07 15:00:27,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627620811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:27,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:27,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:00:27,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292859145] [2021-11-07 15:00:27,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:27,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:00:27,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:00:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:00:27,566 INFO L87 Difference]: Start difference. First operand 7750 states and 11334 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:28,109 INFO L93 Difference]: Finished difference Result 30121 states and 43942 transitions. [2021-11-07 15:00:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:00:28,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 149 [2021-11-07 15:00:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:28,148 INFO L225 Difference]: With dead ends: 30121 [2021-11-07 15:00:28,148 INFO L226 Difference]: Without dead ends: 22428 [2021-11-07 15:00:28,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:00:28,166 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 8334 mSDsluCounter, 9840 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8334 SdHoareTripleChecker+Valid, 14808 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.97ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.78ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:28,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8334 Valid, 14808 Invalid, 47 Unknown, 0 Unchecked, 22.97ms Time], IncrementalHoareTripleChecker [24 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 86.78ms Time] [2021-11-07 15:00:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22428 states. [2021-11-07 15:00:28,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22428 to 7758. [2021-11-07 15:00:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 7756 states have (on average 1.462351727694688) internal successors, (11342), 7757 states have internal predecessors, (11342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11342 transitions. [2021-11-07 15:00:28,420 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11342 transitions. Word has length 149 [2021-11-07 15:00:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:28,420 INFO L470 AbstractCegarLoop]: Abstraction has 7758 states and 11342 transitions. [2021-11-07 15:00:28,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:28,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11342 transitions. [2021-11-07 15:00:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 15:00:28,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:28,428 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:28,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 15:00:28,429 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1329186096, now seen corresponding path program 1 times [2021-11-07 15:00:28,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:28,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435855731] [2021-11-07 15:00:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:28,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:28,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:28,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435855731] [2021-11-07 15:00:28,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435855731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:28,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:28,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:00:28,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433991151] [2021-11-07 15:00:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:28,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:00:28,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:00:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:00:28,632 INFO L87 Difference]: Start difference. First operand 7758 states and 11342 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:29,265 INFO L93 Difference]: Finished difference Result 33734 states and 49163 transitions. [2021-11-07 15:00:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:00:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 168 [2021-11-07 15:00:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:29,317 INFO L225 Difference]: With dead ends: 33734 [2021-11-07 15:00:29,317 INFO L226 Difference]: Without dead ends: 26033 [2021-11-07 15:00:29,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:00:29,340 INFO L933 BasicCegarLoop]: 5088 mSDtfsCounter, 8642 mSDsluCounter, 10058 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8642 SdHoareTripleChecker+Valid, 15146 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.68ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.62ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:29,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8642 Valid, 15146 Invalid, 14 Unknown, 0 Unchecked, 19.68ms Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 42.62ms Time] [2021-11-07 15:00:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2021-11-07 15:00:29,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 7766. [2021-11-07 15:00:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.4618753219989695) internal successors, (11350), 7765 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 11350 transitions. [2021-11-07 15:00:29,683 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 11350 transitions. Word has length 168 [2021-11-07 15:00:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:29,684 INFO L470 AbstractCegarLoop]: Abstraction has 7766 states and 11350 transitions. [2021-11-07 15:00:29,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 11350 transitions. [2021-11-07 15:00:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-07 15:00:29,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:29,692 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:29,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 15:00:29,692 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash -506384738, now seen corresponding path program 1 times [2021-11-07 15:00:29,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:29,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351447510] [2021-11-07 15:00:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:29,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:29,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:29,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351447510] [2021-11-07 15:00:29,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351447510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:29,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:29,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:29,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699026482] [2021-11-07 15:00:29,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:29,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:29,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:29,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:29,916 INFO L87 Difference]: Start difference. First operand 7766 states and 11350 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:30,333 INFO L93 Difference]: Finished difference Result 23176 states and 33906 transitions. [2021-11-07 15:00:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-07 15:00:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:30,360 INFO L225 Difference]: With dead ends: 23176 [2021-11-07 15:00:30,360 INFO L226 Difference]: Without dead ends: 15467 [2021-11-07 15:00:30,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:30,374 INFO L933 BasicCegarLoop]: 5141 mSDtfsCounter, 2778 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 7980 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.92ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:30,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 7980 Invalid, 4 Unknown, 0 Unchecked, 7.44ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.92ms Time] [2021-11-07 15:00:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2021-11-07 15:00:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 7906. [2021-11-07 15:00:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7906 states, 7904 states have (on average 1.4597672064777327) internal successors, (11538), 7905 states have internal predecessors, (11538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11538 transitions. [2021-11-07 15:00:30,683 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11538 transitions. Word has length 169 [2021-11-07 15:00:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:30,683 INFO L470 AbstractCegarLoop]: Abstraction has 7906 states and 11538 transitions. [2021-11-07 15:00:30,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11538 transitions. [2021-11-07 15:00:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 15:00:30,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:30,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:30,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 15:00:30,692 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2039693538, now seen corresponding path program 1 times [2021-11-07 15:00:30,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:30,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987649775] [2021-11-07 15:00:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:30,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:30,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:30,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987649775] [2021-11-07 15:00:30,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987649775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:30,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:30,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:00:30,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467780738] [2021-11-07 15:00:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:30,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:00:30,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:00:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:00:30,927 INFO L87 Difference]: Start difference. First operand 7906 states and 11538 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:31,653 INFO L93 Difference]: Finished difference Result 33722 states and 49195 transitions. [2021-11-07 15:00:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:00:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 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 170 [2021-11-07 15:00:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:31,704 INFO L225 Difference]: With dead ends: 33722 [2021-11-07 15:00:31,705 INFO L226 Difference]: Without dead ends: 25873 [2021-11-07 15:00:31,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:00:31,725 INFO L933 BasicCegarLoop]: 7200 mSDtfsCounter, 6434 mSDsluCounter, 9992 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6434 SdHoareTripleChecker+Valid, 17192 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.06ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.06ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:31,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6434 Valid, 17192 Invalid, 32 Unknown, 0 Unchecked, 17.06ms Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 72.06ms Time] [2021-11-07 15:00:31,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25873 states. [2021-11-07 15:00:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25873 to 7914. [2021-11-07 15:00:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7914 states, 7912 states have (on average 1.4593023255813953) internal successors, (11546), 7913 states have internal predecessors, (11546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 11546 transitions. [2021-11-07 15:00:32,091 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 11546 transitions. Word has length 170 [2021-11-07 15:00:32,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:32,091 INFO L470 AbstractCegarLoop]: Abstraction has 7914 states and 11546 transitions. [2021-11-07 15:00:32,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 11546 transitions. [2021-11-07 15:00:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 15:00:32,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:32,098 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:32,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 15:00:32,099 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 820029928, now seen corresponding path program 1 times [2021-11-07 15:00:32,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:32,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770001248] [2021-11-07 15:00:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:32,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:32,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:32,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770001248] [2021-11-07 15:00:32,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770001248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:00:32,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265691340] [2021-11-07 15:00:32,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:32,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:00:32,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:00:32,316 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) [2021-11-07 15:00:32,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 15:00:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:33,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 3527 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 15:00:33,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:00:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:33,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:00:33,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265691340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:33,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:00:33,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 15:00:33,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615447625] [2021-11-07 15:00:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:33,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:00:33,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:00:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 15:00:33,534 INFO L87 Difference]: Start difference. First operand 7914 states and 11546 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:34,033 INFO L93 Difference]: Finished difference Result 23632 states and 34518 transitions. [2021-11-07 15:00:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:00:34,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 171 [2021-11-07 15:00:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:34,061 INFO L225 Difference]: With dead ends: 23632 [2021-11-07 15:00:34,061 INFO L226 Difference]: Without dead ends: 15775 [2021-11-07 15:00:34,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.34ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:00:34,074 INFO L933 BasicCegarLoop]: 5133 mSDtfsCounter, 2777 mSDsluCounter, 7973 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 13106 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.34ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:34,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 13106 Invalid, 18 Unknown, 0 Unchecked, 9.97ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 40.34ms Time] [2021-11-07 15:00:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2021-11-07 15:00:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 8202. [2021-11-07 15:00:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 8200 states have (on average 1.4553658536585365) internal successors, (11934), 8201 states have internal predecessors, (11934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 11934 transitions. [2021-11-07 15:00:34,365 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 11934 transitions. Word has length 171 [2021-11-07 15:00:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:34,366 INFO L470 AbstractCegarLoop]: Abstraction has 8202 states and 11934 transitions. [2021-11-07 15:00:34,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 11934 transitions. [2021-11-07 15:00:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 15:00:34,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:34,374 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:34,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 15:00:34,580 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,SelfDestructingSolverStorable12 [2021-11-07 15:00:34,581 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1229357914, now seen corresponding path program 1 times [2021-11-07 15:00:34,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:34,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399179731] [2021-11-07 15:00:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:34,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:34,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:34,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399179731] [2021-11-07 15:00:34,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399179731] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:00:34,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804409208] [2021-11-07 15:00:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:34,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:00:34,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:00:34,857 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) [2021-11-07 15:00:34,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 15:00:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:35,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:00:35,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:00:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:36,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:00:36,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804409208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:36,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:00:36,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 15:00:36,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158852303] [2021-11-07 15:00:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:36,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:00:36,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:36,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:00:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:00:36,519 INFO L87 Difference]: Start difference. First operand 8202 states and 11934 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:38,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:00:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:39,437 INFO L93 Difference]: Finished difference Result 24497 states and 35678 transitions. [2021-11-07 15:00:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 15:00:39,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 171 [2021-11-07 15:00:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:39,472 INFO L225 Difference]: With dead ends: 24497 [2021-11-07 15:00:39,472 INFO L226 Difference]: Without dead ends: 24490 [2021-11-07 15:00:39,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:00:39,480 INFO L933 BasicCegarLoop]: 5612 mSDtfsCounter, 5515 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2095.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5515 SdHoareTripleChecker+Valid, 11225 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.51ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2277.35ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:39,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5515 Valid, 11225 Invalid, 34 Unknown, 0 Unchecked, 15.51ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2277.35ms Time] [2021-11-07 15:00:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24490 states. [2021-11-07 15:00:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24490 to 24250. [2021-11-07 15:00:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24250 states, 24248 states have (on average 1.4593368525239194) internal successors, (35386), 24249 states have internal predecessors, (35386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24250 states to 24250 states and 35386 transitions. [2021-11-07 15:00:40,266 INFO L78 Accepts]: Start accepts. Automaton has 24250 states and 35386 transitions. Word has length 171 [2021-11-07 15:00:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:40,267 INFO L470 AbstractCegarLoop]: Abstraction has 24250 states and 35386 transitions. [2021-11-07 15:00:40,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 24250 states and 35386 transitions. [2021-11-07 15:00:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 15:00:40,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:40,288 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:40,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 15:00:40,507 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,SelfDestructingSolverStorable13 [2021-11-07 15:00:40,508 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:40,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1816163928, now seen corresponding path program 1 times [2021-11-07 15:00:40,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:40,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414223635] [2021-11-07 15:00:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:40,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:40,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:40,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414223635] [2021-11-07 15:00:40,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414223635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:40,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:40,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:00:40,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495246206] [2021-11-07 15:00:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:40,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:00:40,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:00:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:00:40,722 INFO L87 Difference]: Start difference. First operand 24250 states and 35386 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:42,532 INFO L93 Difference]: Finished difference Result 69103 states and 100865 transitions. [2021-11-07 15:00:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:00:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 171 [2021-11-07 15:00:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:42,627 INFO L225 Difference]: With dead ends: 69103 [2021-11-07 15:00:42,628 INFO L226 Difference]: Without dead ends: 56975 [2021-11-07 15:00:42,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:00:42,661 INFO L933 BasicCegarLoop]: 4903 mSDtfsCounter, 4909 mSDsluCounter, 5623 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4909 SdHoareTripleChecker+Valid, 10526 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.19ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:42,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4909 Valid, 10526 Invalid, 18 Unknown, 0 Unchecked, 10.36ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 96.19ms Time] [2021-11-07 15:00:42,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56975 states. [2021-11-07 15:00:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56975 to 24254. [2021-11-07 15:00:43,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24254 states, 24252 states have (on average 1.459261091868712) internal successors, (35390), 24253 states have internal predecessors, (35390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24254 states to 24254 states and 35390 transitions. [2021-11-07 15:00:43,680 INFO L78 Accepts]: Start accepts. Automaton has 24254 states and 35390 transitions. Word has length 171 [2021-11-07 15:00:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:43,680 INFO L470 AbstractCegarLoop]: Abstraction has 24254 states and 35390 transitions. [2021-11-07 15:00:43,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 24254 states and 35390 transitions. [2021-11-07 15:00:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 15:00:43,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:43,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:43,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 15:00:43,706 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash 268260612, now seen corresponding path program 1 times [2021-11-07 15:00:43,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:43,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9117150] [2021-11-07 15:00:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:43,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:00:44,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:44,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9117150] [2021-11-07 15:00:44,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9117150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:44,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:44,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:00:44,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699989515] [2021-11-07 15:00:44,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:44,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:00:44,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:00:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:44,043 INFO L87 Difference]: Start difference. First operand 24254 states and 35390 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:00:45,996 INFO L93 Difference]: Finished difference Result 72648 states and 106042 transitions. [2021-11-07 15:00:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:00:45,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 172 [2021-11-07 15:00:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:00:46,069 INFO L225 Difference]: With dead ends: 72648 [2021-11-07 15:00:46,070 INFO L226 Difference]: Without dead ends: 48451 [2021-11-07 15:00:46,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:00:46,095 INFO L933 BasicCegarLoop]: 4898 mSDtfsCounter, 2780 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.58ms IncrementalHoareTripleChecker+Time [2021-11-07 15:00:46,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 7740 Invalid, 7 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 20.58ms Time] [2021-11-07 15:00:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48451 states. [2021-11-07 15:00:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48451 to 24266. [2021-11-07 15:00:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24266 states, 24264 states have (on average 1.4590339597757995) internal successors, (35402), 24265 states have internal predecessors, (35402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24266 states to 24266 states and 35402 transitions. [2021-11-07 15:00:47,160 INFO L78 Accepts]: Start accepts. Automaton has 24266 states and 35402 transitions. Word has length 172 [2021-11-07 15:00:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:00:47,161 INFO L470 AbstractCegarLoop]: Abstraction has 24266 states and 35402 transitions. [2021-11-07 15:00:47,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 24266 states and 35402 transitions. [2021-11-07 15:00:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 15:00:47,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:00:47,178 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:00:47,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 15:00:47,178 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:00:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:00:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1290477699, now seen corresponding path program 1 times [2021-11-07 15:00:47,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:00:47,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825930105] [2021-11-07 15:00:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:00:47,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:00:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:00:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:00:48,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:00:48,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825930105] [2021-11-07 15:00:48,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825930105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:00:48,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:00:48,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 15:00:48,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992684162] [2021-11-07 15:00:48,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:00:48,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 15:00:48,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:00:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 15:00:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-07 15:00:48,001 INFO L87 Difference]: Start difference. First operand 24266 states and 35402 transitions. Second operand has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:00:50,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:00:52,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:00:58,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:05,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:07,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:09,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:11,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:14,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:16,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:18,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:20,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:21,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:23,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:27,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:29,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:33,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:38,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:01:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:01:40,164 INFO L93 Difference]: Finished difference Result 115419 states and 168539 transitions. [2021-11-07 15:01:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 15:01:40,165 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 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 [2021-11-07 15:01:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:01:40,353 INFO L225 Difference]: With dead ends: 115419 [2021-11-07 15:01:40,354 INFO L226 Difference]: Without dead ends: 103263 [2021-11-07 15:01:40,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1446.24ms TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 15:01:40,395 INFO L933 BasicCegarLoop]: 9487 mSDtfsCounter, 38326 mSDsluCounter, 58775 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 107 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43713.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38326 SdHoareTripleChecker+Valid, 68262 SdHoareTripleChecker+Invalid, 3848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 123.92ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45719.96ms IncrementalHoareTripleChecker+Time [2021-11-07 15:01:40,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38326 Valid, 68262 Invalid, 3848 Unknown, 0 Unchecked, 123.92ms Time], IncrementalHoareTripleChecker [107 Valid, 3737 Invalid, 4 Unknown, 0 Unchecked, 45719.96ms Time] [2021-11-07 15:01:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103263 states. [2021-11-07 15:01:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103263 to 30614. [2021-11-07 15:01:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30614 states, 30612 states have (on average 1.4638050437736836) internal successors, (44810), 30613 states have internal predecessors, (44810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:01:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30614 states to 30614 states and 44810 transitions. [2021-11-07 15:01:42,386 INFO L78 Accepts]: Start accepts. Automaton has 30614 states and 44810 transitions. Word has length 174 [2021-11-07 15:01:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:01:42,386 INFO L470 AbstractCegarLoop]: Abstraction has 30614 states and 44810 transitions. [2021-11-07 15:01:42,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.875) internal successors, (174), 16 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:01:42,386 INFO L276 IsEmpty]: Start isEmpty. Operand 30614 states and 44810 transitions. [2021-11-07 15:01:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 15:01:42,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:01:42,412 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:01:42,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 15:01:42,412 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:01:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:01:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1081261563, now seen corresponding path program 1 times [2021-11-07 15:01:42,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:01:42,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816678590] [2021-11-07 15:01:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:01:42,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:01:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:01:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:01:43,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:01:43,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816678590] [2021-11-07 15:01:43,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816678590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:01:43,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:01:43,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 15:01:43,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644883059] [2021-11-07 15:01:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:01:43,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 15:01:43,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:01:43,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 15:01:43,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:01:43,031 INFO L87 Difference]: Start difference. First operand 30614 states and 44810 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:01:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:01:48,881 INFO L93 Difference]: Finished difference Result 119986 states and 175364 transitions. [2021-11-07 15:01:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 15:01:48,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-07 15:01:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:01:49,027 INFO L225 Difference]: With dead ends: 119986 [2021-11-07 15:01:49,028 INFO L226 Difference]: Without dead ends: 89429 [2021-11-07 15:01:49,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 512.51ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 15:01:49,078 INFO L933 BasicCegarLoop]: 5624 mSDtfsCounter, 28405 mSDsluCounter, 28144 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28405 SdHoareTripleChecker+Valid, 33768 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.56ms IncrementalHoareTripleChecker+Time [2021-11-07 15:01:49,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28405 Valid, 33768 Invalid, 82 Unknown, 0 Unchecked, 34.83ms Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 209.56ms Time] [2021-11-07 15:01:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89429 states. [2021-11-07 15:01:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89429 to 30662. [2021-11-07 15:01:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30662 states, 30660 states have (on average 1.4630789302022178) internal successors, (44858), 30661 states have internal predecessors, (44858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:01:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30662 states to 30662 states and 44858 transitions. [2021-11-07 15:01:51,208 INFO L78 Accepts]: Start accepts. Automaton has 30662 states and 44858 transitions. Word has length 174 [2021-11-07 15:01:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:01:51,208 INFO L470 AbstractCegarLoop]: Abstraction has 30662 states and 44858 transitions. [2021-11-07 15:01:51,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:01:51,208 INFO L276 IsEmpty]: Start isEmpty. Operand 30662 states and 44858 transitions. [2021-11-07 15:01:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-07 15:01:51,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:01:51,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:01:51,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 15:01:51,228 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:01:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:01:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1489016868, now seen corresponding path program 1 times [2021-11-07 15:01:51,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:01:51,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626359351] [2021-11-07 15:01:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:01:51,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:01:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:01:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:01:51,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:01:51,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626359351] [2021-11-07 15:01:51,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626359351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:01:51,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:01:51,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 15:01:51,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896747257] [2021-11-07 15:01:51,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:01:51,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 15:01:51,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:01:51,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 15:01:51,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:01:51,812 INFO L87 Difference]: Start difference. First operand 30662 states and 44858 transitions. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:01:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:01:58,315 INFO L93 Difference]: Finished difference Result 113734 states and 166052 transitions. [2021-11-07 15:01:58,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 15:01:58,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 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 180 [2021-11-07 15:01:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:01:58,445 INFO L225 Difference]: With dead ends: 113734 [2021-11-07 15:01:58,446 INFO L226 Difference]: Without dead ends: 83129 [2021-11-07 15:01:58,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 526.33ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 15:01:58,481 INFO L933 BasicCegarLoop]: 5631 mSDtfsCounter, 28405 mSDsluCounter, 28147 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28405 SdHoareTripleChecker+Valid, 33778 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 212.05ms IncrementalHoareTripleChecker+Time [2021-11-07 15:01:58,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28405 Valid, 33778 Invalid, 84 Unknown, 0 Unchecked, 35.72ms Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 212.05ms Time] [2021-11-07 15:01:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83129 states. [2021-11-07 15:02:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83129 to 24314. [2021-11-07 15:02:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24314 states, 24312 states have (on average 1.4581276735768345) internal successors, (35450), 24313 states have internal predecessors, (35450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:02:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24314 states to 24314 states and 35450 transitions. [2021-11-07 15:02:00,763 INFO L78 Accepts]: Start accepts. Automaton has 24314 states and 35450 transitions. Word has length 180 [2021-11-07 15:02:00,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:02:00,764 INFO L470 AbstractCegarLoop]: Abstraction has 24314 states and 35450 transitions. [2021-11-07 15:02:00,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:02:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand 24314 states and 35450 transitions. [2021-11-07 15:02:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-07 15:02:00,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:02:00,778 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:02:00,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 15:02:00,778 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:02:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:02:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1562730988, now seen corresponding path program 1 times [2021-11-07 15:02:00,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:02:00,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709775427] [2021-11-07 15:02:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:02:00,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:02:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:02:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:02:01,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:02:01,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709775427] [2021-11-07 15:02:01,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709775427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:02:01,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:02:01,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 15:02:01,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207832933] [2021-11-07 15:02:01,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:02:01,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 15:02:01,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:02:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 15:02:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:02:01,214 INFO L87 Difference]: Start difference. First operand 24314 states and 35450 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:02:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:02:09,150 INFO L93 Difference]: Finished difference Result 105742 states and 154232 transitions. [2021-11-07 15:02:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:02:09,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 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 180 [2021-11-07 15:02:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:02:09,267 INFO L225 Difference]: With dead ends: 105742 [2021-11-07 15:02:09,268 INFO L226 Difference]: Without dead ends: 81485 [2021-11-07 15:02:09,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 242.76ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 15:02:09,301 INFO L933 BasicCegarLoop]: 5431 mSDtfsCounter, 21415 mSDsluCounter, 24533 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 281.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21415 SdHoareTripleChecker+Valid, 29964 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.27ms IncrementalHoareTripleChecker+Time [2021-11-07 15:02:09,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21415 Valid, 29964 Invalid, 45 Unknown, 0 Unchecked, 31.91ms Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 303.27ms Time] [2021-11-07 15:02:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81485 states. [2021-11-07 15:02:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81485 to 24374. [2021-11-07 15:02:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24374 states, 24372 states have (on average 1.4569998358772362) internal successors, (35510), 24373 states have internal predecessors, (35510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:02:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24374 states to 24374 states and 35510 transitions. [2021-11-07 15:02:11,730 INFO L78 Accepts]: Start accepts. Automaton has 24374 states and 35510 transitions. Word has length 180 [2021-11-07 15:02:11,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:02:11,730 INFO L470 AbstractCegarLoop]: Abstraction has 24374 states and 35510 transitions. [2021-11-07 15:02:11,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:02:11,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24374 states and 35510 transitions. [2021-11-07 15:02:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-07 15:02:11,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:02:11,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:02:11,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 15:02:11,746 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:02:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:02:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1597851652, now seen corresponding path program 1 times [2021-11-07 15:02:11,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:02:11,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313999453] [2021-11-07 15:02:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:02:11,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:02:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:02:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:02:12,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:02:12,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313999453] [2021-11-07 15:02:12,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313999453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:02:12,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:02:12,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 15:02:12,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439948948] [2021-11-07 15:02:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:02:12,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 15:02:12,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:02:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 15:02:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 15:02:12,311 INFO L87 Difference]: Start difference. First operand 24374 states and 35510 transitions. Second operand has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:02:14,355 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 [] [2021-11-07 15:02:16,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:18,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:20,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:28,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:30,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:32,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:34,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:39,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:47,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:49,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:52,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:57,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:02:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:02:58,445 INFO L93 Difference]: Finished difference Result 36912 states and 53757 transitions. [2021-11-07 15:02:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:02:58,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 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 [2021-11-07 15:02:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:02:58,481 INFO L225 Difference]: With dead ends: 36912 [2021-11-07 15:02:58,481 INFO L226 Difference]: Without dead ends: 24702 [2021-11-07 15:02:58,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 329.66ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 15:02:58,499 INFO L933 BasicCegarLoop]: 2834 mSDtfsCounter, 68 mSDsluCounter, 12091 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41673.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 14925 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.59ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43752.91ms IncrementalHoareTripleChecker+Time [2021-11-07 15:02:58,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 14925 Invalid, 2157 Unknown, 0 Unchecked, 23.59ms Time], IncrementalHoareTripleChecker [7 Valid, 2143 Invalid, 7 Unknown, 0 Unchecked, 43752.91ms Time] [2021-11-07 15:02:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24702 states. [2021-11-07 15:03:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24702 to 24566. [2021-11-07 15:03:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24566 states, 24564 states have (on average 1.457335938772187) internal successors, (35798), 24565 states have internal predecessors, (35798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24566 states to 24566 states and 35798 transitions. [2021-11-07 15:03:00,806 INFO L78 Accepts]: Start accepts. Automaton has 24566 states and 35798 transitions. Word has length 186 [2021-11-07 15:03:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:03:00,806 INFO L470 AbstractCegarLoop]: Abstraction has 24566 states and 35798 transitions. [2021-11-07 15:03:00,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.285714285714285) internal successors, (184), 7 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 24566 states and 35798 transitions. [2021-11-07 15:03:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-07 15:03:00,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:03:00,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:03:00,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 15:03:00,821 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:03:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:03:00,822 INFO L85 PathProgramCache]: Analyzing trace with hash 325376382, now seen corresponding path program 1 times [2021-11-07 15:03:00,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:03:00,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671743317] [2021-11-07 15:03:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:03:00,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:03:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:03:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 15:03:02,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:03:02,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671743317] [2021-11-07 15:03:02,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671743317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:03:02,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:03:02,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:03:02,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797735289] [2021-11-07 15:03:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:03:02,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:03:02,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:03:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:03:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:03:02,258 INFO L87 Difference]: Start difference. First operand 24566 states and 35798 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:03:06,184 INFO L93 Difference]: Finished difference Result 66456 states and 96881 transitions. [2021-11-07 15:03:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 15:03:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 [2021-11-07 15:03:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:03:06,242 INFO L225 Difference]: With dead ends: 66456 [2021-11-07 15:03:06,242 INFO L226 Difference]: Without dead ends: 41947 [2021-11-07 15:03:06,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.64ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:03:06,275 INFO L933 BasicCegarLoop]: 4924 mSDtfsCounter, 2770 mSDsluCounter, 4928 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2770 SdHoareTripleChecker+Valid, 9852 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.52ms IncrementalHoareTripleChecker+Time [2021-11-07 15:03:06,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2770 Valid, 9852 Invalid, 14 Unknown, 0 Unchecked, 7.79ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 203.52ms Time] [2021-11-07 15:03:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41947 states. [2021-11-07 15:03:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41947 to 24578. [2021-11-07 15:03:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24578 states, 24576 states have (on average 1.4571126302083333) internal successors, (35810), 24577 states have internal predecessors, (35810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 35810 transitions. [2021-11-07 15:03:08,648 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 35810 transitions. Word has length 186 [2021-11-07 15:03:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:03:08,649 INFO L470 AbstractCegarLoop]: Abstraction has 24578 states and 35810 transitions. [2021-11-07 15:03:08,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 35810 transitions. [2021-11-07 15:03:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-07 15:03:08,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:03:08,662 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:03:08,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 15:03:08,662 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:03:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:03:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash 95619828, now seen corresponding path program 1 times [2021-11-07 15:03:08,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:03:08,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664023059] [2021-11-07 15:03:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:03:08,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:03:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:03:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 15:03:09,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:03:09,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664023059] [2021-11-07 15:03:09,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664023059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:03:09,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:03:09,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:03:09,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559420328] [2021-11-07 15:03:09,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:03:09,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:03:09,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:03:09,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:03:09,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:03:09,957 INFO L87 Difference]: Start difference. First operand 24578 states and 35810 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:03:12,210 INFO L93 Difference]: Finished difference Result 49126 states and 71595 transitions. [2021-11-07 15:03:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:03:12,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 189 [2021-11-07 15:03:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:03:12,244 INFO L225 Difference]: With dead ends: 49126 [2021-11-07 15:03:12,244 INFO L226 Difference]: Without dead ends: 24584 [2021-11-07 15:03:12,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:03:12,269 INFO L933 BasicCegarLoop]: 2841 mSDtfsCounter, 0 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5643 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.59ms IncrementalHoareTripleChecker+Time [2021-11-07 15:03:12,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5643 Invalid, 55 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 162.59ms Time] [2021-11-07 15:03:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24584 states. [2021-11-07 15:03:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24584 to 24584. [2021-11-07 15:03:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24584 states, 24582 states have (on average 1.4570010576844845) internal successors, (35816), 24583 states have internal predecessors, (35816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 35816 transitions. [2021-11-07 15:03:14,443 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 35816 transitions. Word has length 189 [2021-11-07 15:03:14,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:03:14,443 INFO L470 AbstractCegarLoop]: Abstraction has 24584 states and 35816 transitions. [2021-11-07 15:03:14,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:03:14,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 35816 transitions. [2021-11-07 15:03:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 15:03:14,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:03:14,458 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 15:03:14,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 15:03:14,458 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 15:03:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:03:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1000950408, now seen corresponding path program 1 times [2021-11-07 15:03:14,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:03:14,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777085293] [2021-11-07 15:03:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:03:14,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:03:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:03:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 15:03:16,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:03:16,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777085293] [2021-11-07 15:03:16,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777085293] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:03:16,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735075430] [2021-11-07 15:03:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:03:16,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:03:16,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:03:16,095 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) [2021-11-07 15:03:16,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 15:03:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:03:17,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 3674 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-07 15:03:17,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:03:17,564 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 [2021-11-07 15:03:18,001 INFO L354 Elim1Store]: treesize reduction 164, result has 11.4 percent of original size [2021-11-07 15:03:18,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 30 treesize of output 38 [2021-11-07 15:03:18,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 15:03:18,620 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-07 15:03:18,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2021-11-07 15:04:03,856 WARN L227 SmtUtils]: Spent 44.49s on a formula simplification. DAG size of input: 30 DAG size of output: 13 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 15:04:03,856 INFO L354 Elim1Store]: treesize reduction 82, result has 17.2 percent of original size [2021-11-07 15:04:03,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 5581 treesize of output 5570 [2021-11-07 15:08:15,818 WARN L227 SmtUtils]: Spent 4.20m on a formula simplification. DAG size of input: 198 DAG size of output: 43 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 15:08:15,820 INFO L354 Elim1Store]: treesize reduction 1440, result has 4.7 percent of original size [2021-11-07 15:08:15,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 5528 treesize of output 5541 [2021-11-07 15:11:08,261 WARN L227 SmtUtils]: Spent 2.87m on a formula simplification. DAG size of input: 160 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-07 15:11:08,262 INFO L354 Elim1Store]: treesize reduction 1018, result has 5.7 percent of original size [2021-11-07 15:11:08,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 5485 treesize of output 5492 Killed by 15