./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.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-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.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 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:58:45,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:58:45,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:58:45,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:58:45,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:58:45,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:58:45,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:58:45,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:58:45,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:58:45,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:58:45,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:58:45,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:58:45,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:58:45,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:58:45,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:58:45,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:58:45,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:58:45,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:58:45,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:58:45,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:58:45,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:58:45,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:58:45,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:58:45,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:58:45,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:58:45,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:58:45,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:58:45,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:58:45,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:58:45,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:58:45,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:58:45,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:58:45,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:58:45,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:58:45,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:58:45,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:58:45,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:58:45,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:58:45,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:58:45,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:58:45,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:58:45,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:58:45,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:58:45,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:58:45,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:58:45,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:58:45,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:58:45,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:58:45,658 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:58:45,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:58:45,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:58:45,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:58:45,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:58:45,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:58:45,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:58:45,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:58:45,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:58:45,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:58:45,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:58:45,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-07 13:58:45,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:58:45,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:58:45,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:58:45,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:58:45,834 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:58:45,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:58:45,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9065ff23b/15223ca995df4a14a3e7d829a047d56e/FLAGda7be6984 [2021-11-07 13:58:46,475 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:58:46,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:58:46,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9065ff23b/15223ca995df4a14a3e7d829a047d56e/FLAGda7be6984 [2021-11-07 13:58:46,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9065ff23b/15223ca995df4a14a3e7d829a047d56e [2021-11-07 13:58:46,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:58:46,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:58:46,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:58:46,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:58:46,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:58:46,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:46" (1/1) ... [2021-11-07 13:58:46,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f448ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:46, skipping insertion in model container [2021-11-07 13:58:46,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:46" (1/1) ... [2021-11-07 13:58:46,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:58:46,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:58:48,076 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-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-07 13:58:48,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:58:48,148 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:58:48,331 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-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-07 13:58:48,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:58:48,487 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:58:48,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48 WrapperNode [2021-11-07 13:58:48,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:58:48,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:58:48,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:58:48,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:58:48,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:48,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:49,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:58:49,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:58:49,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:58:49,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:58:49,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:49,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:49,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:49,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:49,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:49,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:50,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:50,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:58:50,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:58:50,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:58:50,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:58:50,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (1/1) ... [2021-11-07 13:58:50,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:58:50,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:58:50,240 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 13:58:50,248 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 13:58:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:58:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:58:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:58:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:58:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:58:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:58:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:59:06,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:59:06,243 INFO L299 CfgBuilder]: Removed 8487 assume(true) statements. [2021-11-07 13:59:06,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:06 BoogieIcfgContainer [2021-11-07 13:59:06,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:59:06,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:59:06,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:59:06,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:59:06,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:58:46" (1/3) ... [2021-11-07 13:59:06,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b77d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:06, skipping insertion in model container [2021-11-07 13:59:06,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:48" (2/3) ... [2021-11-07 13:59:06,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b77d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:06, skipping insertion in model container [2021-11-07 13:59:06,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:06" (3/3) ... [2021-11-07 13:59:06,253 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:59:06,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:59:06,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 13:59:06,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:59:06,308 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 13:59:06,308 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 13:59:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states 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 13:59:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 13:59:06,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:06,379 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] [2021-11-07 13:59:06,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:06,385 INFO L85 PathProgramCache]: Analyzing trace with hash -623761508, now seen corresponding path program 1 times [2021-11-07 13:59:06,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:06,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400437624] [2021-11-07 13:59:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:06,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:06,794 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 13:59:06,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:06,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400437624] [2021-11-07 13:59:06,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400437624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:06,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:06,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:59:06,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994513468] [2021-11-07 13:59:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:06,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 13:59:06,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 13:59:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:59:06,823 INFO L87 Difference]: Start difference. First operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:06,996 INFO L93 Difference]: Finished difference Result 10186 states and 12525 transitions. [2021-11-07 13:59:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 13:59:06,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 13:59:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:07,029 INFO L225 Difference]: With dead ends: 10186 [2021-11-07 13:59:07,029 INFO L226 Difference]: Without dead ends: 5056 [2021-11-07 13:59:07,045 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 13:59:07,050 INFO L933 BasicCegarLoop]: 6195 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, 6195 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:07,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6195 Invalid, 0 Unknown, 0 Unchecked, 15.67ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 13:59:07,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-11-07 13:59:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2021-11-07 13:59:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5050 states have (on average 1.218019801980198) internal successors, (6151), 5055 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states 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 13:59:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6151 transitions. [2021-11-07 13:59:07,215 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6151 transitions. Word has length 69 [2021-11-07 13:59:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:07,215 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 6151 transitions. [2021-11-07 13:59:07,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6151 transitions. [2021-11-07 13:59:07,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 13:59:07,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:07,222 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] [2021-11-07 13:59:07,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:59:07,223 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash -606369396, now seen corresponding path program 1 times [2021-11-07 13:59:07,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:07,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379913314] [2021-11-07 13:59:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:07,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:07,448 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 13:59:07,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:07,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379913314] [2021-11-07 13:59:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379913314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:07,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:07,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:07,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111021510] [2021-11-07 13:59:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:07,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:07,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:07,453 INFO L87 Difference]: Start difference. First operand 5056 states and 6151 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:09,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:59:09,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:09,846 INFO L93 Difference]: Finished difference Result 15006 states and 18281 transitions. [2021-11-07 13:59:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:09,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 13:59:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:09,876 INFO L225 Difference]: With dead ends: 15006 [2021-11-07 13:59:09,877 INFO L226 Difference]: Without dead ends: 10008 [2021-11-07 13:59:09,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:09,893 INFO L933 BasicCegarLoop]: 6148 mSDtfsCounter, 6041 mSDsluCounter, 6131 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2042.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6041 SdHoareTripleChecker+Valid, 12279 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2121.63ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:09,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6041 Valid, 12279 Invalid, 15 Unknown, 0 Unchecked, 24.92ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2121.63ms Time] [2021-11-07 13:59:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2021-11-07 13:59:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 10000. [2021-11-07 13:59:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10000 states, 9994 states have (on average 1.2193315989593756) internal successors, (12186), 9999 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states 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 13:59:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 12186 transitions. [2021-11-07 13:59:10,301 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 12186 transitions. Word has length 69 [2021-11-07 13:59:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:10,302 INFO L470 AbstractCegarLoop]: Abstraction has 10000 states and 12186 transitions. [2021-11-07 13:59:10,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 12186 transitions. [2021-11-07 13:59:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 13:59:10,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:10,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:59:10,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:59:10,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash -146693713, now seen corresponding path program 1 times [2021-11-07 13:59:10,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:10,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422119998] [2021-11-07 13:59:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:10,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:10,482 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 13:59:10,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:10,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422119998] [2021-11-07 13:59:10,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422119998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:10,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:10,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:10,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947943738] [2021-11-07 13:59:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:10,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:10,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:10,485 INFO L87 Difference]: Start difference. First operand 10000 states and 12186 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:59:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:10,692 INFO L93 Difference]: Finished difference Result 10000 states and 12186 transitions. [2021-11-07 13:59:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:10,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-07 13:59:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:10,722 INFO L225 Difference]: With dead ends: 10000 [2021-11-07 13:59:10,722 INFO L226 Difference]: Without dead ends: 9998 [2021-11-07 13:59:10,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:10,731 INFO L933 BasicCegarLoop]: 6148 mSDtfsCounter, 6113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6113 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.97ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:10,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6113 Valid, 6148 Invalid, 2 Unknown, 0 Unchecked, 11.98ms Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 25.97ms Time] [2021-11-07 13:59:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9998 states. [2021-11-07 13:59:10,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9998 to 9998. [2021-11-07 13:59:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9998 states, 9993 states have (on average 1.2192534774342039) internal successors, (12184), 9997 states have internal predecessors, (12184), 0 states have call successors, (0), 0 states 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 13:59:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9998 states to 9998 states and 12184 transitions. [2021-11-07 13:59:10,966 INFO L78 Accepts]: Start accepts. Automaton has 9998 states and 12184 transitions. Word has length 78 [2021-11-07 13:59:10,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:10,967 INFO L470 AbstractCegarLoop]: Abstraction has 9998 states and 12184 transitions. [2021-11-07 13:59:10,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 13:59:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9998 states and 12184 transitions. [2021-11-07 13:59:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 13:59:10,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:10,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:59:10,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:59:10,969 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:10,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash -252516706, now seen corresponding path program 1 times [2021-11-07 13:59:10,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:10,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166363276] [2021-11-07 13:59:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:10,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:11,109 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 13:59:11,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:11,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166363276] [2021-11-07 13:59:11,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166363276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:11,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:11,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:11,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838202087] [2021-11-07 13:59:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:11,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:11,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:11,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:11,112 INFO L87 Difference]: Start difference. First operand 9998 states and 12184 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:11,664 INFO L93 Difference]: Finished difference Result 29844 states and 36397 transitions. [2021-11-07 13:59:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:11,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 13:59:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:11,849 INFO L225 Difference]: With dead ends: 29844 [2021-11-07 13:59:11,850 INFO L226 Difference]: Without dead ends: 19900 [2021-11-07 13:59:11,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:11,866 INFO L933 BasicCegarLoop]: 6143 mSDtfsCounter, 6092 mSDsluCounter, 6067 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6092 SdHoareTripleChecker+Valid, 12210 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.68ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.73ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:11,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6092 Valid, 12210 Invalid, 26 Unknown, 0 Unchecked, 20.68ms Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 47.73ms Time] [2021-11-07 13:59:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19900 states. [2021-11-07 13:59:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19900 to 19896. [2021-11-07 13:59:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19896 states, 19891 states have (on average 1.2194962545875019) internal successors, (24257), 19895 states have internal predecessors, (24257), 0 states have call successors, (0), 0 states 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 13:59:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19896 states to 19896 states and 24257 transitions. [2021-11-07 13:59:12,330 INFO L78 Accepts]: Start accepts. Automaton has 19896 states and 24257 transitions. Word has length 79 [2021-11-07 13:59:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:12,331 INFO L470 AbstractCegarLoop]: Abstraction has 19896 states and 24257 transitions. [2021-11-07 13:59:12,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 19896 states and 24257 transitions. [2021-11-07 13:59:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 13:59:12,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:12,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:59:12,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:59:12,349 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash 976309893, now seen corresponding path program 1 times [2021-11-07 13:59:12,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:12,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083724465] [2021-11-07 13:59:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:12,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:59:12,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:12,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083724465] [2021-11-07 13:59:12,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083724465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:12,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:12,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:12,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945003518] [2021-11-07 13:59:12,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:12,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:12,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:12,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:12,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:12,504 INFO L87 Difference]: Start difference. First operand 19896 states and 24257 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 13:59:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:13,293 INFO L93 Difference]: Finished difference Result 53309 states and 64925 transitions. [2021-11-07 13:59:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2021-11-07 13:59:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:13,365 INFO L225 Difference]: With dead ends: 53309 [2021-11-07 13:59:13,366 INFO L226 Difference]: Without dead ends: 33471 [2021-11-07 13:59:13,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:13,409 INFO L933 BasicCegarLoop]: 6167 mSDtfsCounter, 4212 mSDsluCounter, 5980 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 12147 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.71ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.86ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:13,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4212 Valid, 12147 Invalid, 103 Unknown, 0 Unchecked, 23.71ms Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 117.86ms Time] [2021-11-07 13:59:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33471 states. [2021-11-07 13:59:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33471 to 31820. [2021-11-07 13:59:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 31815 states have (on average 1.2208077950652207) internal successors, (38840), 31819 states have internal predecessors, (38840), 0 states have call successors, (0), 0 states 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 13:59:14,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 38840 transitions. [2021-11-07 13:59:14,377 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 38840 transitions. Word has length 163 [2021-11-07 13:59:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:14,378 INFO L470 AbstractCegarLoop]: Abstraction has 31820 states and 38840 transitions. [2021-11-07 13:59:14,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 13:59:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 38840 transitions. [2021-11-07 13:59:14,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-07 13:59:14,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:14,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:14,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:59:14,393 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash -783847760, now seen corresponding path program 1 times [2021-11-07 13:59:14,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:14,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024025797] [2021-11-07 13:59:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:14,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:14,575 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 13:59:14,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:14,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024025797] [2021-11-07 13:59:14,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024025797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:14,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:14,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:14,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132626804] [2021-11-07 13:59:14,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:14,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:14,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:14,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:14,578 INFO L87 Difference]: Start difference. First operand 31820 states and 38840 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 13:59:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:15,567 INFO L93 Difference]: Finished difference Result 77335 states and 94854 transitions. [2021-11-07 13:59:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 278 [2021-11-07 13:59:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:15,664 INFO L225 Difference]: With dead ends: 77335 [2021-11-07 13:59:15,665 INFO L226 Difference]: Without dead ends: 45573 [2021-11-07 13:59:15,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:15,744 INFO L933 BasicCegarLoop]: 6153 mSDtfsCounter, 3423 mSDsluCounter, 6023 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 12176 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.32ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:15,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3423 Valid, 12176 Invalid, 65 Unknown, 0 Unchecked, 13.82ms Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 79.32ms Time] [2021-11-07 13:59:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45573 states. [2021-11-07 13:59:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45573 to 45564. [2021-11-07 13:59:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45564 states, 45559 states have (on average 1.2305362277486336) internal successors, (56062), 45563 states have internal predecessors, (56062), 0 states have call successors, (0), 0 states 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 13:59:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45564 states to 45564 states and 56062 transitions. [2021-11-07 13:59:16,957 INFO L78 Accepts]: Start accepts. Automaton has 45564 states and 56062 transitions. Word has length 278 [2021-11-07 13:59:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:16,957 INFO L470 AbstractCegarLoop]: Abstraction has 45564 states and 56062 transitions. [2021-11-07 13:59:16,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 13:59:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 45564 states and 56062 transitions. [2021-11-07 13:59:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-07 13:59:16,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:16,973 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:16,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:59:16,974 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2075658536, now seen corresponding path program 1 times [2021-11-07 13:59:16,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:16,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886292194] [2021-11-07 13:59:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:16,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:59:17,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:17,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886292194] [2021-11-07 13:59:17,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886292194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:59:17,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132161883] [2021-11-07 13:59:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:17,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:17,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:59:17,186 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 13:59:17,187 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 13:59:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:18,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 6404 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 13:59:18,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:59:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:59:18,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:59:18,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132161883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:18,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:59:18,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 13:59:18,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598206283] [2021-11-07 13:59:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:18,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:18,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:18,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:59:18,970 INFO L87 Difference]: Start difference. First operand 45564 states and 56062 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 13:59:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:20,304 INFO L93 Difference]: Finished difference Result 105159 states and 129954 transitions. [2021-11-07 13:59:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 325 [2021-11-07 13:59:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:20,437 INFO L225 Difference]: With dead ends: 105159 [2021-11-07 13:59:20,437 INFO L226 Difference]: Without dead ends: 59653 [2021-11-07 13:59:20,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.39ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:59:20,495 INFO L933 BasicCegarLoop]: 6126 mSDtfsCounter, 3485 mSDsluCounter, 5992 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 12118 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.06ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.19ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:20,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3485 Valid, 12118 Invalid, 105 Unknown, 0 Unchecked, 11.06ms Time], IncrementalHoareTripleChecker [23 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 109.19ms Time] [2021-11-07 13:59:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59653 states. [2021-11-07 13:59:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59653 to 59644. [2021-11-07 13:59:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59644 states, 59639 states have (on average 1.2373782256577073) internal successors, (73796), 59643 states have internal predecessors, (73796), 0 states have call successors, (0), 0 states 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 13:59:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59644 states to 59644 states and 73796 transitions. [2021-11-07 13:59:21,930 INFO L78 Accepts]: Start accepts. Automaton has 59644 states and 73796 transitions. Word has length 325 [2021-11-07 13:59:21,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:21,931 INFO L470 AbstractCegarLoop]: Abstraction has 59644 states and 73796 transitions. [2021-11-07 13:59:21,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 13:59:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 59644 states and 73796 transitions. [2021-11-07 13:59:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-11-07 13:59:22,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:22,196 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:22,226 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 13:59:22,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:22,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash -39876190, now seen corresponding path program 1 times [2021-11-07 13:59:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:22,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319886435] [2021-11-07 13:59:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:22,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 13:59:22,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:22,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319886435] [2021-11-07 13:59:22,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319886435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:22,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:22,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:22,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938466974] [2021-11-07 13:59:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:22,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:22,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:22,721 INFO L87 Difference]: Start difference. First operand 59644 states and 73796 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 13:59:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:24,127 INFO L93 Difference]: Finished difference Result 120238 states and 148633 transitions. [2021-11-07 13:59:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 348 [2021-11-07 13:59:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:24,240 INFO L225 Difference]: With dead ends: 120238 [2021-11-07 13:59:24,240 INFO L226 Difference]: Without dead ends: 60652 [2021-11-07 13:59:24,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:24,303 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 105 mSDsluCounter, 6119 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 12253 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.29ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.64ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:24,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 12253 Invalid, 48 Unknown, 0 Unchecked, 13.29ms Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 96.64ms Time] [2021-11-07 13:59:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60652 states. [2021-11-07 13:59:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60652 to 59692. [2021-11-07 13:59:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59692 states, 59687 states have (on average 1.2371873272236835) internal successors, (73844), 59691 states have internal predecessors, (73844), 0 states have call successors, (0), 0 states 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 13:59:25,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59692 states to 59692 states and 73844 transitions. [2021-11-07 13:59:25,759 INFO L78 Accepts]: Start accepts. Automaton has 59692 states and 73844 transitions. Word has length 348 [2021-11-07 13:59:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:25,761 INFO L470 AbstractCegarLoop]: Abstraction has 59692 states and 73844 transitions. [2021-11-07 13:59:25,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 13:59:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 59692 states and 73844 transitions. [2021-11-07 13:59:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-07 13:59:25,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:25,780 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:25,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:59:25,780 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1610861700, now seen corresponding path program 1 times [2021-11-07 13:59:25,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:25,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133391194] [2021-11-07 13:59:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:25,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 13:59:26,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:26,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133391194] [2021-11-07 13:59:26,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133391194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:26,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:59:26,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:59:26,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138584984] [2021-11-07 13:59:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:26,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:26,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:26,062 INFO L87 Difference]: Start difference. First operand 59692 states and 73844 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 13:59:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:27,306 INFO L93 Difference]: Finished difference Result 119806 states and 148153 transitions. [2021-11-07 13:59:27,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:27,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 360 [2021-11-07 13:59:27,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:27,419 INFO L225 Difference]: With dead ends: 119806 [2021-11-07 13:59:27,420 INFO L226 Difference]: Without dead ends: 60172 [2021-11-07 13:59:27,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:59:27,502 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 45 mSDsluCounter, 6119 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 12253 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.09ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.52ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:27,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 12253 Invalid, 48 Unknown, 0 Unchecked, 8.09ms Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 49.52ms Time] [2021-11-07 13:59:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60172 states. [2021-11-07 13:59:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60172 to 59740. [2021-11-07 13:59:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59740 states, 59735 states have (on average 1.2369967355821545) internal successors, (73892), 59739 states have internal predecessors, (73892), 0 states have call successors, (0), 0 states 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 13:59:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59740 states to 59740 states and 73892 transitions. [2021-11-07 13:59:29,114 INFO L78 Accepts]: Start accepts. Automaton has 59740 states and 73892 transitions. Word has length 360 [2021-11-07 13:59:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:29,116 INFO L470 AbstractCegarLoop]: Abstraction has 59740 states and 73892 transitions. [2021-11-07 13:59:29,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 13:59:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 59740 states and 73892 transitions. [2021-11-07 13:59:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-07 13:59:29,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:29,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:29,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 13:59:29,133 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1456428464, now seen corresponding path program 1 times [2021-11-07 13:59:29,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:29,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581662930] [2021-11-07 13:59:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:29,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 13:59:29,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:29,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581662930] [2021-11-07 13:59:29,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581662930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:59:29,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784369678] [2021-11-07 13:59:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:29,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:29,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:59:29,425 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 13:59:29,426 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 13:59:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:30,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 6878 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:59:30,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:59:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 13:59:31,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:59:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-07 13:59:31,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784369678] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:59:31,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:59:31,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 13:59:31,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410679263] [2021-11-07 13:59:31,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:59:31,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:59:31,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:59:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:59:31,575 INFO L87 Difference]: Start difference. First operand 59740 states and 73892 transitions. Second operand has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 13:59:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:32,876 INFO L93 Difference]: Finished difference Result 120862 states and 149305 transitions. [2021-11-07 13:59:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:59:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 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 370 [2021-11-07 13:59:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:32,969 INFO L225 Difference]: With dead ends: 120862 [2021-11-07 13:59:32,969 INFO L226 Difference]: Without dead ends: 61180 [2021-11-07 13:59:33,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.52ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:59:33,043 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 306 mSDsluCounter, 12273 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 18407 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.77ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.33ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:33,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 18407 Invalid, 134 Unknown, 0 Unchecked, 10.77ms Time], IncrementalHoareTripleChecker [49 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 105.33ms Time] [2021-11-07 13:59:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61180 states. [2021-11-07 13:59:34,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61180 to 61180. [2021-11-07 13:59:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61180 states, 61175 states have (on average 1.231418062934205) internal successors, (75332), 61179 states have internal predecessors, (75332), 0 states have call successors, (0), 0 states 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 13:59:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61180 states to 61180 states and 75332 transitions. [2021-11-07 13:59:34,591 INFO L78 Accepts]: Start accepts. Automaton has 61180 states and 75332 transitions. Word has length 370 [2021-11-07 13:59:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:34,592 INFO L470 AbstractCegarLoop]: Abstraction has 61180 states and 75332 transitions. [2021-11-07 13:59:34,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.57142857142857) internal successors, (382), 7 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 13:59:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 61180 states and 75332 transitions. [2021-11-07 13:59:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-07 13:59:34,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:34,606 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:34,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 13:59:34,807 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,SelfDestructingSolverStorable9 [2021-11-07 13:59:34,807 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash -595028404, now seen corresponding path program 2 times [2021-11-07 13:59:34,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:34,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354217712] [2021-11-07 13:59:34,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:34,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-07 13:59:35,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:35,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354217712] [2021-11-07 13:59:35,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354217712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:59:35,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708525870] [2021-11-07 13:59:35,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 13:59:35,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:35,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:59:35,112 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 13:59:35,113 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 13:59:43,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 13:59:43,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:59:43,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 5919 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 13:59:43,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:59:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-07 13:59:44,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:59:44,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708525870] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:59:44,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:59:44,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 13:59:44,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051362383] [2021-11-07 13:59:44,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:59:44,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:59:44,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:59:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:59:44,282 INFO L87 Difference]: Start difference. First operand 61180 states and 75332 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 13:59:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:45,481 INFO L93 Difference]: Finished difference Result 122321 states and 150629 transitions. [2021-11-07 13:59:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:59:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 400 [2021-11-07 13:59:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:45,574 INFO L225 Difference]: With dead ends: 122321 [2021-11-07 13:59:45,574 INFO L226 Difference]: Without dead ends: 61185 [2021-11-07 13:59:45,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.44ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:59:45,649 INFO L933 BasicCegarLoop]: 6144 mSDtfsCounter, 0 mSDsluCounter, 6131 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.17ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:45,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12275 Invalid, 26 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 24.17ms Time] [2021-11-07 13:59:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61185 states. [2021-11-07 13:59:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61185 to 61185. [2021-11-07 13:59:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61185 states, 61180 states have (on average 1.2313991500490356) internal successors, (75337), 61184 states have internal predecessors, (75337), 0 states have call successors, (0), 0 states 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 13:59:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61185 states to 61185 states and 75337 transitions. [2021-11-07 13:59:47,068 INFO L78 Accepts]: Start accepts. Automaton has 61185 states and 75337 transitions. Word has length 400 [2021-11-07 13:59:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:47,069 INFO L470 AbstractCegarLoop]: Abstraction has 61185 states and 75337 transitions. [2021-11-07 13:59:47,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 13:59:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 61185 states and 75337 transitions. [2021-11-07 13:59:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-11-07 13:59:47,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:47,082 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:47,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 13:59:47,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:47,291 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1081060932, now seen corresponding path program 1 times [2021-11-07 13:59:47,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:47,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934128901] [2021-11-07 13:59:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:47,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 13:59:47,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:47,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934128901] [2021-11-07 13:59:47,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934128901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:59:47,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081276950] [2021-11-07 13:59:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:47,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:59:47,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:59:47,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 13:59:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:48,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 7493 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:59:48,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:59:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 13:59:49,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:59:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 13:59:49,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081276950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:59:49,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:59:49,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 13:59:49,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138748336] [2021-11-07 13:59:49,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:59:49,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:59:49,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:49,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:59:49,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:59:49,977 INFO L87 Difference]: Start difference. First operand 61185 states and 75337 transitions. Second operand has 7 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 13:59:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:52,029 INFO L93 Difference]: Finished difference Result 129795 states and 158382 transitions. [2021-11-07 13:59:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:59:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 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 405 [2021-11-07 13:59:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:52,175 INFO L225 Difference]: With dead ends: 129795 [2021-11-07 13:59:52,175 INFO L226 Difference]: Without dead ends: 68673 [2021-11-07 13:59:52,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.39ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:59:52,262 INFO L933 BasicCegarLoop]: 6134 mSDtfsCounter, 504 mSDsluCounter, 18452 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 24586 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.50ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 287.84ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:52,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 24586 Invalid, 150 Unknown, 0 Unchecked, 12.50ms Time], IncrementalHoareTripleChecker [40 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 287.84ms Time] [2021-11-07 13:59:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68673 states. [2021-11-07 13:59:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68673 to 68673. [2021-11-07 13:59:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68673 states, 68668 states have (on average 1.2082629463505563) internal successors, (82969), 68672 states have internal predecessors, (82969), 0 states have call successors, (0), 0 states 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 13:59:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68673 states to 68673 states and 82969 transitions. [2021-11-07 13:59:54,142 INFO L78 Accepts]: Start accepts. Automaton has 68673 states and 82969 transitions. Word has length 405 [2021-11-07 13:59:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:54,143 INFO L470 AbstractCegarLoop]: Abstraction has 68673 states and 82969 transitions. [2021-11-07 13:59:54,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 13:59:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 68673 states and 82969 transitions. [2021-11-07 13:59:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-11-07 13:59:54,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:54,160 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:54,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 13:59:54,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:54,361 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:59:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 560032322, now seen corresponding path program 2 times [2021-11-07 13:59:54,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:54,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395442468] [2021-11-07 13:59:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:54,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1084 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-07 13:59:55,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:59:55,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395442468] [2021-11-07 13:59:55,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395442468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:59:55,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166193067] [2021-11-07 13:59:55,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 13:59:55,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:59:55,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:59:55,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process