./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.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 9ebc2bf251eebe5c3e705e13aaf0b2b77694b0f92422a04a1e22001ed538514b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:28:23,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:28:23,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:28:23,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:28:23,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:28:23,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:28:23,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:28:23,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:28:23,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:28:23,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:28:23,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:28:23,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:28:23,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:28:23,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:28:23,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:28:23,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:28:23,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:28:23,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:28:23,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:28:23,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:28:23,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:28:23,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:28:23,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:28:23,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:28:23,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:28:23,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:28:23,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:28:23,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:28:23,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:28:23,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:28:23,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:28:23,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:28:23,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:28:23,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:28:23,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:28:23,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:28:23,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:28:23,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:28:23,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:28:23,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:28:23,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:28:23,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:28:23,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:28:23,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:28:23,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:28:23,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:28:23,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:28:23,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:28:23,656 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:28:23,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:28:23,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:28:23,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:28:23,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:28:23,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:28:23,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:28:23,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:28:23,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:28:23,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:28:23,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:28:23,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:28:23,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:28:23,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:28:23,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:28:23,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:28:23,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:28:23,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:28:23,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:28:23,661 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:28:23,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:28:23,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:28:23,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:28:23,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ebc2bf251eebe5c3e705e13aaf0b2b77694b0f92422a04a1e22001ed538514b [2021-11-07 12:28:23,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:28:23,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:28:23,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:28:23,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:28:23,886 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:28:23,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.cil.out.i [2021-11-07 12:28:23,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a9f04fe/05dc13cce2fe463aa90ec18eea0ad488/FLAGe5bcf808c [2021-11-07 12:28:24,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:28:24,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.cil.out.i [2021-11-07 12:28:24,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a9f04fe/05dc13cce2fe463aa90ec18eea0ad488/FLAGe5bcf808c [2021-11-07 12:28:25,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a9f04fe/05dc13cce2fe463aa90ec18eea0ad488 [2021-11-07 12:28:25,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:28:25,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:28:25,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:28:25,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:28:25,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:28:25,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:25" (1/1) ... [2021-11-07 12:28:25,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bfc61d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:25, skipping insertion in model container [2021-11-07 12:28:25,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:25" (1/1) ... [2021-11-07 12:28:25,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:28:25,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:28:27,349 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.cil.out.i[392555,392568] [2021-11-07 12:28:27,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:28:27,521 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:28:27,928 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.cil.out.i[392555,392568] [2021-11-07 12:28:27,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:28:28,062 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:28:28,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28 WrapperNode [2021-11-07 12:28:28,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:28:28,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:28:28,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:28:28,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:28:28,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:28,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:37,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:28:37,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:28:37,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:28:37,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:28:37,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:37,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:38,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:38,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:41,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:41,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:41,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:42,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:28:42,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:28:42,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:28:42,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:28:42,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (1/1) ... [2021-11-07 12:28:42,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:28:42,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:28:42,779 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 12:28:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:28:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:28:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:28:42,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:28:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:28:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:28:42,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:28:42,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:28:42,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:28:42,807 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 12:30:36,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:30:36,425 INFO L299 CfgBuilder]: Removed 52874 assume(true) statements. [2021-11-07 12:30:36,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:30:36 BoogieIcfgContainer [2021-11-07 12:30:36,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:30:36,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:30:36,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:30:36,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:30:36,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:28:25" (1/3) ... [2021-11-07 12:30:36,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faaaf80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:30:36, skipping insertion in model container [2021-11-07 12:30:36,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:28" (2/3) ... [2021-11-07 12:30:36,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3faaaf80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:30:36, skipping insertion in model container [2021-11-07 12:30:36,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:30:36" (3/3) ... [2021-11-07 12:30:36,473 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--aty--radeonfb.ko-main.cil.out.i [2021-11-07 12:30:36,483 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:30:36,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 12:30:36,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:30:36,657 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 12:30:36,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 12:30:37,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 38279 states, 38271 states have (on average 1.3014815395469155) internal successors, (49809), 38278 states have internal predecessors, (49809), 0 states have call successors, (0), 0 states 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 12:30:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 12:30:37,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:37,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:30:37,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:30:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1939127006, now seen corresponding path program 1 times [2021-11-07 12:30:37,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:37,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287094321] [2021-11-07 12:30:37,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:37,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:38,076 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 12:30:38,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:38,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287094321] [2021-11-07 12:30:38,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287094321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:38,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:38,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:30:38,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752637862] [2021-11-07 12:30:38,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:38,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:30:38,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:30:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:38,169 INFO L87 Difference]: Start difference. First operand has 38279 states, 38271 states have (on average 1.3014815395469155) internal successors, (49809), 38278 states have internal predecessors, (49809), 0 states have call successors, (0), 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 12:30:40,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:30:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:42,467 INFO L93 Difference]: Finished difference Result 110578 states and 143753 transitions. [2021-11-07 12:30:42,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:30:42,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-11-07 12:30:42,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:43,030 INFO L225 Difference]: With dead ends: 110578 [2021-11-07 12:30:43,031 INFO L226 Difference]: Without dead ends: 72294 [2021-11-07 12:30:43,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:43,147 INFO L933 BasicCegarLoop]: 46237 mSDtfsCounter, 46207 mSDsluCounter, 46226 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2158.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46207 SdHoareTripleChecker+Valid, 92463 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 198.70ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2307.29ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:43,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46207 Valid, 92463 Invalid, 15 Unknown, 0 Unchecked, 198.70ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2307.29ms Time] [2021-11-07 12:30:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72294 states. [2021-11-07 12:30:45,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72294 to 72290. [2021-11-07 12:30:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72290 states, 72283 states have (on average 1.2788207462335541) internal successors, (92437), 72289 states have internal predecessors, (92437), 0 states have call successors, (0), 0 states 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 12:30:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72290 states to 72290 states and 92437 transitions. [2021-11-07 12:30:45,410 INFO L78 Accepts]: Start accepts. Automaton has 72290 states and 92437 transitions. Word has length 13 [2021-11-07 12:30:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:45,411 INFO L470 AbstractCegarLoop]: Abstraction has 72290 states and 92437 transitions. [2021-11-07 12:30:45,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 12:30:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 72290 states and 92437 transitions. [2021-11-07 12:30:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 12:30:45,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:45,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:30:45,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:30:45,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:30:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 798952846, now seen corresponding path program 1 times [2021-11-07 12:30:45,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:45,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283831030] [2021-11-07 12:30:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:45,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:45,722 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 12:30:45,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:45,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283831030] [2021-11-07 12:30:45,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283831030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:45,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:45,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:30:45,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320661439] [2021-11-07 12:30:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:45,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:30:45,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:30:45,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:45,731 INFO L87 Difference]: Start difference. First operand 72290 states and 92437 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 12:30:47,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:30:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:49,287 INFO L93 Difference]: Finished difference Result 72290 states and 92437 transitions. [2021-11-07 12:30:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:30:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-07 12:30:49,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:49,457 INFO L225 Difference]: With dead ends: 72290 [2021-11-07 12:30:49,457 INFO L226 Difference]: Without dead ends: 72288 [2021-11-07 12:30:49,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:49,492 INFO L933 BasicCegarLoop]: 46229 mSDtfsCounter, 46215 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2108.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46215 SdHoareTripleChecker+Valid, 46229 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2278.96ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:49,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46215 Valid, 46229 Invalid, 2 Unknown, 0 Unchecked, 50.65ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2278.96ms Time] [2021-11-07 12:30:49,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72288 states. [2021-11-07 12:30:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72288 to 72288. [2021-11-07 12:30:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72288 states, 72282 states have (on average 1.278810768932791) internal successors, (92435), 72287 states have internal predecessors, (92435), 0 states have call successors, (0), 0 states 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 12:30:51,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72288 states to 72288 states and 92435 transitions. [2021-11-07 12:30:51,434 INFO L78 Accepts]: Start accepts. Automaton has 72288 states and 92435 transitions. Word has length 17 [2021-11-07 12:30:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:51,434 INFO L470 AbstractCegarLoop]: Abstraction has 72288 states and 92435 transitions. [2021-11-07 12:30:51,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 12:30:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 72288 states and 92435 transitions. [2021-11-07 12:30:51,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 12:30:51,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:51,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:30:51,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:30:51,440 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:30:51,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:51,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1002142948, now seen corresponding path program 1 times [2021-11-07 12:30:51,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:51,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228296588] [2021-11-07 12:30:51,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:51,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:51,746 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 12:30:51,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:51,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228296588] [2021-11-07 12:30:51,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228296588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:51,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:51,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:30:51,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149493910] [2021-11-07 12:30:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:51,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:30:51,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:30:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:51,753 INFO L87 Difference]: Start difference. First operand 72288 states and 92435 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 12:30:53,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:30:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:30:55,122 INFO L93 Difference]: Finished difference Result 72288 states and 92435 transitions. [2021-11-07 12:30:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:30:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-07 12:30:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:30:55,250 INFO L225 Difference]: With dead ends: 72288 [2021-11-07 12:30:55,250 INFO L226 Difference]: Without dead ends: 72286 [2021-11-07 12:30:55,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:55,284 INFO L933 BasicCegarLoop]: 46227 mSDtfsCounter, 46212 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2111.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46212 SdHoareTripleChecker+Valid, 46227 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2227.98ms IncrementalHoareTripleChecker+Time [2021-11-07 12:30:55,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46212 Valid, 46227 Invalid, 2 Unknown, 0 Unchecked, 40.55ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2227.98ms Time] [2021-11-07 12:30:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72286 states. [2021-11-07 12:30:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72286 to 72286. [2021-11-07 12:30:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72286 states, 72281 states have (on average 1.278800791355958) internal successors, (92433), 72285 states have internal predecessors, (92433), 0 states have call successors, (0), 0 states 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 12:30:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72286 states to 72286 states and 92433 transitions. [2021-11-07 12:30:56,972 INFO L78 Accepts]: Start accepts. Automaton has 72286 states and 92433 transitions. Word has length 18 [2021-11-07 12:30:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:30:56,972 INFO L470 AbstractCegarLoop]: Abstraction has 72286 states and 92433 transitions. [2021-11-07 12:30:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states 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 12:30:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 72286 states and 92433 transitions. [2021-11-07 12:30:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 12:30:56,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:30:56,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:30:56,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:30:56,974 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:30:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:30:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1001537704, now seen corresponding path program 1 times [2021-11-07 12:30:56,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:30:56,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121007770] [2021-11-07 12:30:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:30:56,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:30:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:30:57,307 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 12:30:57,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:30:57,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121007770] [2021-11-07 12:30:57,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121007770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:30:57,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:30:57,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:30:57,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198501469] [2021-11-07 12:30:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:30:57,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:30:57,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:30:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:30:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:30:57,310 INFO L87 Difference]: Start difference. First operand 72286 states and 92433 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 12:30:59,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:31:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:31:00,880 INFO L93 Difference]: Finished difference Result 72286 states and 92433 transitions. [2021-11-07 12:31:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:31:00,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-07 12:31:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:31:01,036 INFO L225 Difference]: With dead ends: 72286 [2021-11-07 12:31:01,036 INFO L226 Difference]: Without dead ends: 72284 [2021-11-07 12:31:01,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:31:01,077 INFO L933 BasicCegarLoop]: 46225 mSDtfsCounter, 46209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2318.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46209 SdHoareTripleChecker+Valid, 46225 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2446.64ms IncrementalHoareTripleChecker+Time [2021-11-07 12:31:01,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46209 Valid, 46225 Invalid, 2 Unknown, 0 Unchecked, 37.07ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2446.64ms Time] [2021-11-07 12:31:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72284 states. [2021-11-07 12:31:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72284 to 72284. [2021-11-07 12:31:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72284 states, 72280 states have (on average 1.2787908135030437) internal successors, (92431), 72283 states have internal predecessors, (92431), 0 states have call successors, (0), 0 states 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 12:31:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72284 states to 72284 states and 92431 transitions. [2021-11-07 12:31:02,835 INFO L78 Accepts]: Start accepts. Automaton has 72284 states and 92431 transitions. Word has length 19 [2021-11-07 12:31:02,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:31:02,835 INFO L470 AbstractCegarLoop]: Abstraction has 72284 states and 92431 transitions. [2021-11-07 12:31:02,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 12:31:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 72284 states and 92431 transitions. [2021-11-07 12:31:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 12:31:02,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:31:02,837 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] [2021-11-07 12:31:02,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:31:02,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:31:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:31:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -982775130, now seen corresponding path program 1 times [2021-11-07 12:31:02,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:31:02,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947092862] [2021-11-07 12:31:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:31:02,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:31:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:31:03,156 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 12:31:03,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:31:03,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947092862] [2021-11-07 12:31:03,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947092862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:31:03,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:31:03,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:31:03,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079285928] [2021-11-07 12:31:03,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:31:03,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:31:03,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:31:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:31:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:31:03,159 INFO L87 Difference]: Start difference. First operand 72284 states and 92431 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 12:31:05,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:31:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:31:06,918 INFO L93 Difference]: Finished difference Result 72284 states and 92431 transitions. [2021-11-07 12:31:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:31:06,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-07 12:31:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:31:07,027 INFO L225 Difference]: With dead ends: 72284 [2021-11-07 12:31:07,027 INFO L226 Difference]: Without dead ends: 72282 [2021-11-07 12:31:07,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:31:07,049 INFO L933 BasicCegarLoop]: 46223 mSDtfsCounter, 46206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2152.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46206 SdHoareTripleChecker+Valid, 46223 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2220.77ms IncrementalHoareTripleChecker+Time [2021-11-07 12:31:07,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46206 Valid, 46223 Invalid, 2 Unknown, 0 Unchecked, 43.05ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2220.77ms Time] [2021-11-07 12:31:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72282 states. [2021-11-07 12:31:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72282 to 72282. [2021-11-07 12:31:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72282 states, 72279 states have (on average 1.2787808353740366) internal successors, (92429), 72281 states have internal predecessors, (92429), 0 states have call successors, (0), 0 states 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 12:31:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72282 states to 72282 states and 92429 transitions. [2021-11-07 12:31:09,131 INFO L78 Accepts]: Start accepts. Automaton has 72282 states and 92429 transitions. Word has length 20 [2021-11-07 12:31:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:31:09,132 INFO L470 AbstractCegarLoop]: Abstraction has 72282 states and 92429 transitions. [2021-11-07 12:31:09,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 12:31:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 72282 states and 92429 transitions. [2021-11-07 12:31:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 12:31:09,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:31:09,133 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] [2021-11-07 12:31:09,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:31:09,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:31:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:31:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash -401135326, now seen corresponding path program 1 times [2021-11-07 12:31:09,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:31:09,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27703444] [2021-11-07 12:31:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:31:09,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:31:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:31:09,442 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 12:31:09,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:31:09,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27703444] [2021-11-07 12:31:09,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27703444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:31:09,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:31:09,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:31:09,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349310943] [2021-11-07 12:31:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:31:09,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:31:09,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:31:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:31:09,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:31:09,445 INFO L87 Difference]: Start difference. First operand 72282 states and 92429 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 12:31:11,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:31:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:31:13,178 INFO L93 Difference]: Finished difference Result 72282 states and 92429 transitions. [2021-11-07 12:31:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:31:13,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-07 12:31:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:31:13,286 INFO L225 Difference]: With dead ends: 72282 [2021-11-07 12:31:13,286 INFO L226 Difference]: Without dead ends: 72272 [2021-11-07 12:31:13,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:31:13,312 INFO L933 BasicCegarLoop]: 46219 mSDtfsCounter, 30791 mSDsluCounter, 15406 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2127.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30791 SdHoareTripleChecker+Valid, 61625 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2256.42ms IncrementalHoareTripleChecker+Time [2021-11-07 12:31:13,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30791 Valid, 61625 Invalid, 7 Unknown, 0 Unchecked, 46.34ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2256.42ms Time] [2021-11-07 12:31:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72272 states.