./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:14:54,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:14:54,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:14:54,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:14:54,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:14:54,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:14:54,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:14:54,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:14:54,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:14:54,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:14:54,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:14:54,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:14:54,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:14:54,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:14:54,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:14:54,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:14:54,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:14:54,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:14:54,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:14:54,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:14:54,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:14:54,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:14:54,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:14:54,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:14:54,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:14:54,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:14:54,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:14:54,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:14:54,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:14:54,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:14:54,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:14:54,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:14:54,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:14:54,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:14:54,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:14:54,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:14:54,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:14:54,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:14:54,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:14:54,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:14:54,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:14:54,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:14:54,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:14:54,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:14:54,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:14:54,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:14:54,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:14:54,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:14:54,882 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:14:54,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:14:54,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:14:54,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:14:54,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:14:54,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:14:54,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:14:54,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:14:54,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:14:54,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:14:54,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:14:54,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:14:54,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:14:54,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:14:54,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:14:54,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:14:54,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:14:54,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:14:54,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:14:54,886 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:14:54,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:14:54,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:14:54,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:14:54,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 [2021-11-04 07:14:55,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:14:55,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:14:55,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:14:55,136 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:14:55,137 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:14:55,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-11-04 07:14:55,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e8996586/1d57f7cc3bb64e3f89559c319fbc16de/FLAG930e29c5a [2021-11-04 07:14:55,853 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:14:55,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-11-04 07:14:55,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e8996586/1d57f7cc3bb64e3f89559c319fbc16de/FLAG930e29c5a [2021-11-04 07:14:55,953 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e8996586/1d57f7cc3bb64e3f89559c319fbc16de [2021-11-04 07:14:55,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:14:55,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:14:55,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:14:55,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:14:55,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:14:55,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:14:55" (1/1) ... [2021-11-04 07:14:55,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d058f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:55, skipping insertion in model container [2021-11-04 07:14:55,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:14:55" (1/1) ... [2021-11-04 07:14:55,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:14:56,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:14:57,302 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2021-11-04 07:14:57,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:14:57,413 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:14:57,782 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2021-11-04 07:14:57,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:14:57,866 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:14:57,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57 WrapperNode [2021-11-04 07:14:57,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:14:57,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:14:57,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:14:57,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:14:57,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:14:57,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:14:59,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:14:59,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:14:59,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:14:59,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:14:59,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:14:59,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:00,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:00,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:01,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:01,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:01,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:02,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:15:02,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:15:02,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:15:02,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:15:02,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (1/1) ... [2021-11-04 07:15:02,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:15:02,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:15:02,305 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) [2021-11-04 07:15:02,327 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 [2021-11-04 07:15:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:15:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:15:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin_accept [2021-11-04 07:15:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin_accept [2021-11-04 07:15:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure initio_abort_srb [2021-11-04 07:15:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_abort_srb [2021-11-04 07:15:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:15:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:15:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:15:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:15:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_scsi [2021-11-04 07:15:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_scsi [2021-11-04 07:15:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:15:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_targ [2021-11-04 07:15:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_targ [2021-11-04 07:15:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:15:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:15:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:15:02,351 INFO L130 BoogieDeclarations]: Found specification of procedure wait_tulip [2021-11-04 07:15:02,351 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_tulip [2021-11-04 07:15:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_resel [2021-11-04 07:15:02,352 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_resel [2021-11-04 07:15:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:15:02,352 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_tag [2021-11-04 07:15:02,352 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_tag [2021-11-04 07:15:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:15:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_main [2021-11-04 07:15:02,353 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_main [2021-11-04 07:15:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:15:02,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:15:02,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:15:09,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:15:09,164 INFO L299 CfgBuilder]: Removed 10452 assume(true) statements. [2021-11-04 07:15:09,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:15:09 BoogieIcfgContainer [2021-11-04 07:15:09,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:15:09,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:15:09,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:15:09,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:15:09,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:14:55" (1/3) ... [2021-11-04 07:15:09,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192b39eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:15:09, skipping insertion in model container [2021-11-04 07:15:09,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:14:57" (2/3) ... [2021-11-04 07:15:09,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192b39eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:15:09, skipping insertion in model container [2021-11-04 07:15:09,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:15:09" (3/3) ... [2021-11-04 07:15:09,183 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-11-04 07:15:09,190 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:15:09,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-04 07:15:09,267 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:15:09,273 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 [2021-11-04 07:15:09,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-04 07:15:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 11091 states, 10691 states have (on average 1.3925731924048266) internal successors, (14888), 10695 states have internal predecessors, (14888), 388 states have call successors, (388), 8 states have call predecessors, (388), 8 states have return successors, (388), 388 states have call predecessors, (388), 388 states have call successors, (388) [2021-11-04 07:15:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-04 07:15:09,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:15:09,602 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] [2021-11-04 07:15:09,603 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:15:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:15:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash -17948578, now seen corresponding path program 1 times [2021-11-04 07:15:09,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:15:09,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86233122] [2021-11-04 07:15:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:15:09,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:15:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:15:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:15:10,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:15:10,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86233122] [2021-11-04 07:15:10,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86233122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:15:10,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:15:10,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:15:10,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510758191] [2021-11-04 07:15:10,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:15:10,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:15:10,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:15:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:15:10,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:15:10,159 INFO L87 Difference]: Start difference. First operand has 11091 states, 10691 states have (on average 1.3925731924048266) internal successors, (14888), 10695 states have internal predecessors, (14888), 388 states have call successors, (388), 8 states have call predecessors, (388), 8 states have return successors, (388), 388 states have call predecessors, (388), 388 states have call successors, (388) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:15:13,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:15:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:15:31,795 INFO L93 Difference]: Finished difference Result 22178 states and 31323 transitions. [2021-11-04 07:15:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:15:31,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-04 07:15:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:15:31,880 INFO L225 Difference]: With dead ends: 22178 [2021-11-04 07:15:31,881 INFO L226 Difference]: Without dead ends: 11069 [2021-11-04 07:15:31,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:15:31,938 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14854 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17571.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 14855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21012.30ms IncrementalHoareTripleChecker+Time [2021-11-04 07:15:31,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 794 Invalid, 14855 Unknown, 0 Unchecked, 23.03ms Time], IncrementalHoareTripleChecker [0 Valid, 14854 Invalid, 1 Unknown, 0 Unchecked, 21012.30ms Time] [2021-11-04 07:15:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11069 states. [2021-11-04 07:15:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11069 to 11069. [2021-11-04 07:15:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11069 states, 10670 states have (on average 1.3901593252108717) internal successors, (14833), 10673 states have internal predecessors, (14833), 388 states have call successors, (388), 8 states have call predecessors, (388), 8 states have return successors, (388), 388 states have call predecessors, (388), 388 states have call successors, (388) [2021-11-04 07:15:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11069 states to 11069 states and 15609 transitions. [2021-11-04 07:15:32,438 INFO L78 Accepts]: Start accepts. Automaton has 11069 states and 15609 transitions. Word has length 34 [2021-11-04 07:15:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:15:32,440 INFO L470 AbstractCegarLoop]: Abstraction has 11069 states and 15609 transitions. [2021-11-04 07:15:32,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:15:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 11069 states and 15609 transitions. [2021-11-04 07:15:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-04 07:15:32,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:15:32,443 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] [2021-11-04 07:15:32,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:15:32,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:15:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:15:32,445 INFO L85 PathProgramCache]: Analyzing trace with hash -786906906, now seen corresponding path program 1 times [2021-11-04 07:15:32,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:15:32,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858141653] [2021-11-04 07:15:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:15:32,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:15:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:15:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:15:32,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:15:32,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858141653] [2021-11-04 07:15:32,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858141653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:15:32,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:15:32,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:15:32,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937841346] [2021-11-04 07:15:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:15:32,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:15:32,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:15:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:15:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:15:32,624 INFO L87 Difference]: Start difference. First operand 11069 states and 15609 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:15:35,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:15:37,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:15:45,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:16:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:16:11,190 INFO L93 Difference]: Finished difference Result 22115 states and 31194 transitions. [2021-11-04 07:16:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:16:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-04 07:16:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:16:11,262 INFO L225 Difference]: With dead ends: 22115 [2021-11-04 07:16:11,263 INFO L226 Difference]: Without dead ends: 11070 [2021-11-04 07:16:11,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:16:11,333 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 0 mSDsluCounter, 15602 mSDsCounter, 0 mSdLazyCounter, 29662 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32139.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 29664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29662 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37890.36ms IncrementalHoareTripleChecker+Time [2021-11-04 07:16:11,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1552 Invalid, 29664 Unknown, 0 Unchecked, 72.73ms Time], IncrementalHoareTripleChecker [0 Valid, 29662 Invalid, 2 Unknown, 0 Unchecked, 37890.36ms Time] [2021-11-04 07:16:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11070 states. [2021-11-04 07:16:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11070 to 11070. [2021-11-04 07:16:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 10671 states have (on average 1.3901227626276824) internal successors, (14834), 10674 states have internal predecessors, (14834), 388 states have call successors, (388), 8 states have call predecessors, (388), 8 states have return successors, (388), 388 states have call predecessors, (388), 388 states have call successors, (388) [2021-11-04 07:16:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 15610 transitions. [2021-11-04 07:16:11,801 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 15610 transitions. Word has length 34 [2021-11-04 07:16:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:16:11,802 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 15610 transitions. [2021-11-04 07:16:11,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:16:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 15610 transitions. [2021-11-04 07:16:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-04 07:16:11,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:16:11,808 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] [2021-11-04 07:16:11,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:16:11,809 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:16:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:16:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1986688511, now seen corresponding path program 1 times [2021-11-04 07:16:11,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:16:11,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651335337] [2021-11-04 07:16:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:16:11,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:16:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:16:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 07:16:12,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:16:12,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651335337] [2021-11-04 07:16:12,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651335337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:16:12,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:16:12,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:16:12,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341006648] [2021-11-04 07:16:12,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:16:12,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:16:12,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:16:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:16:12,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:16:12,022 INFO L87 Difference]: Start difference. First operand 11070 states and 15610 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:16:15,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:16:26,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:17:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:17:19,800 INFO L93 Difference]: Finished difference Result 33102 states and 46709 transitions. [2021-11-04 07:17:19,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:17:19,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-04 07:17:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:17:19,948 INFO L225 Difference]: With dead ends: 33102 [2021-11-04 07:17:19,949 INFO L226 Difference]: Without dead ends: 22059 [2021-11-04 07:17:20,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:17:20,023 INFO L933 BasicCegarLoop]: 1164 mSDtfsCounter, 15510 mSDsluCounter, 15587 mSDsCounter, 0 mSdLazyCounter, 29669 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53902.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15516 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 29674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29669 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66406.15ms IncrementalHoareTripleChecker+Time [2021-11-04 07:17:20,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15516 Valid, 1940 Invalid, 29674 Unknown, 0 Unchecked, 89.92ms Time], IncrementalHoareTripleChecker [3 Valid, 29669 Invalid, 2 Unknown, 0 Unchecked, 66406.15ms Time] [2021-11-04 07:17:20,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22059 states. [2021-11-04 07:17:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22059 to 21869. [2021-11-04 07:17:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21869 states, 21074 states have (on average 1.392094524058081) internal successors, (29337), 21078 states have internal predecessors, (29337), 776 states have call successors, (776), 16 states have call predecessors, (776), 16 states have return successors, (782), 776 states have call predecessors, (782), 776 states have call successors, (782) [2021-11-04 07:17:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21869 states to 21869 states and 30895 transitions. [2021-11-04 07:17:20,879 INFO L78 Accepts]: Start accepts. Automaton has 21869 states and 30895 transitions. Word has length 35 [2021-11-04 07:17:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:17:20,880 INFO L470 AbstractCegarLoop]: Abstraction has 21869 states and 30895 transitions. [2021-11-04 07:17:20,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:17:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 21869 states and 30895 transitions. [2021-11-04 07:17:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 07:17:20,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:17:20,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:17:20,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 07:17:20,886 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:17:20,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:17:20,886 INFO L85 PathProgramCache]: Analyzing trace with hash -195193065, now seen corresponding path program 1 times [2021-11-04 07:17:20,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:17:20,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335855936] [2021-11-04 07:17:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:17:20,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:17:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:17:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 07:17:21,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:17:21,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335855936] [2021-11-04 07:17:21,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335855936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:17:21,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:17:21,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:17:21,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251059442] [2021-11-04 07:17:21,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:17:21,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:17:21,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:17:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:17:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:17:21,028 INFO L87 Difference]: Start difference. First operand 21869 states and 30895 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:17:23,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:17:32,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:17:36,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:19:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:19:21,120 INFO L93 Difference]: Finished difference Result 32886 states and 46433 transitions. [2021-11-04 07:19:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:19:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 07:19:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:19:21,281 INFO L225 Difference]: With dead ends: 32886 [2021-11-04 07:19:21,281 INFO L226 Difference]: Without dead ends: 32877 [2021-11-04 07:19:21,306 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 [2021-11-04 07:19:21,307 INFO L933 BasicCegarLoop]: 1164 mSDtfsCounter, 15556 mSDsluCounter, 15575 mSDsCounter, 0 mSdLazyCounter, 29642 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85734.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15556 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 29645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29642 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118412.31ms IncrementalHoareTripleChecker+Time [2021-11-04 07:19:21,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15556 Valid, 1940 Invalid, 29645 Unknown, 0 Unchecked, 103.66ms Time], IncrementalHoareTripleChecker [2 Valid, 29642 Invalid, 1 Unknown, 0 Unchecked, 118412.31ms Time] [2021-11-04 07:19:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32877 states. [2021-11-04 07:19:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32877 to 32670. [2021-11-04 07:19:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32670 states, 31479 states have (on average 1.3928333174497285) internal successors, (43845), 31484 states have internal predecessors, (43845), 1164 states have call successors, (1164), 24 states have call predecessors, (1164), 24 states have return successors, (1170), 1164 states have call predecessors, (1170), 1164 states have call successors, (1170) [2021-11-04 07:19:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32670 states to 32670 states and 46179 transitions. [2021-11-04 07:19:22,515 INFO L78 Accepts]: Start accepts. Automaton has 32670 states and 46179 transitions. Word has length 44 [2021-11-04 07:19:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:19:22,516 INFO L470 AbstractCegarLoop]: Abstraction has 32670 states and 46179 transitions. [2021-11-04 07:19:22,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:19:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32670 states and 46179 transitions. [2021-11-04 07:19:22,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 07:19:22,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:19:22,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:19:22,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 07:19:22,518 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:19:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:19:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -195133483, now seen corresponding path program 1 times [2021-11-04 07:19:22,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:19:22,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113510722] [2021-11-04 07:19:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:19:22,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:19:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:19:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 07:19:22,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:19:22,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113510722] [2021-11-04 07:19:22,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113510722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:19:22,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:19:22,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:19:22,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220666992] [2021-11-04 07:19:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:19:22,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:19:22,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:19:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:19:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:19:22,715 INFO L87 Difference]: Start difference. First operand 32670 states and 46179 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:19:27,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:19:51,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:22:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:22:19,325 INFO L93 Difference]: Finished difference Result 54472 states and 76996 transitions. [2021-11-04 07:22:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:22:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 07:22:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:22:19,651 INFO L225 Difference]: With dead ends: 54472 [2021-11-04 07:22:19,652 INFO L226 Difference]: Without dead ends: 54470 [2021-11-04 07:22:19,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:22:19,701 INFO L933 BasicCegarLoop]: 1164 mSDtfsCounter, 15514 mSDsluCounter, 15572 mSDsCounter, 0 mSdLazyCounter, 29633 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118141.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15520 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 29636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 119.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29633 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174300.96ms IncrementalHoareTripleChecker+Time [2021-11-04 07:22:19,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15520 Valid, 1940 Invalid, 29636 Unknown, 0 Unchecked, 119.92ms Time], IncrementalHoareTripleChecker [1 Valid, 29633 Invalid, 2 Unknown, 0 Unchecked, 174300.96ms Time] [2021-11-04 07:22:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54470 states. [2021-11-04 07:22:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54470 to 54280. [2021-11-04 07:22:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54280 states, 52297 states have (on average 1.393311279805725) internal successors, (72866), 52304 states have internal predecessors, (72866), 1940 states have call successors, (1940), 40 states have call predecessors, (1940), 40 states have return successors, (1958), 1940 states have call predecessors, (1958), 1940 states have call successors, (1958) [2021-11-04 07:22:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54280 states to 54280 states and 76764 transitions. [2021-11-04 07:22:21,505 INFO L78 Accepts]: Start accepts. Automaton has 54280 states and 76764 transitions. Word has length 44 [2021-11-04 07:22:21,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:22:21,507 INFO L470 AbstractCegarLoop]: Abstraction has 54280 states and 76764 transitions. [2021-11-04 07:22:21,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:22:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 54280 states and 76764 transitions. [2021-11-04 07:22:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-04 07:22:21,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:22:21,508 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] [2021-11-04 07:22:21,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 07:22:21,509 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:22:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:22:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1754127952, now seen corresponding path program 1 times [2021-11-04 07:22:21,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:22:21,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963609084] [2021-11-04 07:22:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:22:21,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:22:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:22:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 07:22:21,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:22:21,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963609084] [2021-11-04 07:22:21,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963609084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:22:21,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:22:21,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:22:21,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198289856] [2021-11-04 07:22:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:22:21,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:22:21,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:22:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:22:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:22:21,658 INFO L87 Difference]: Start difference. First operand 54280 states and 76764 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:22:26,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:26:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:26:21,740 INFO L93 Difference]: Finished difference Result 75324 states and 106592 transitions. [2021-11-04 07:26:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:26:21,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-04 07:26:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:26:22,064 INFO L225 Difference]: With dead ends: 75324 [2021-11-04 07:26:22,064 INFO L226 Difference]: Without dead ends: 75322 [2021-11-04 07:26:22,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:26:22,117 INFO L933 BasicCegarLoop]: 1159 mSDtfsCounter, 15561 mSDsluCounter, 14909 mSDsCounter, 0 mSdLazyCounter, 28978 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157985.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15567 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 28979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28978 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237557.26ms IncrementalHoareTripleChecker+Time [2021-11-04 07:26:22,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15567 Valid, 1925 Invalid, 28979 Unknown, 0 Unchecked, 121.36ms Time], IncrementalHoareTripleChecker [0 Valid, 28978 Invalid, 1 Unknown, 0 Unchecked, 237557.26ms Time] [2021-11-04 07:26:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75322 states. [2021-11-04 07:26:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75322 to 64798. [2021-11-04 07:26:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64798 states, 62425 states have (on average 1.393720464557469) internal successors, (87003), 62432 states have internal predecessors, (87003), 2323 states have call successors, (2323), 48 states have call predecessors, (2323), 48 states have return successors, (2347), 2323 states have call predecessors, (2347), 2323 states have call successors, (2347) [2021-11-04 07:26:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64798 states to 64798 states and 91673 transitions. [2021-11-04 07:26:24,383 INFO L78 Accepts]: Start accepts. Automaton has 64798 states and 91673 transitions. Word has length 45 [2021-11-04 07:26:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:26:24,385 INFO L470 AbstractCegarLoop]: Abstraction has 64798 states and 91673 transitions. [2021-11-04 07:26:24,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 64798 states and 91673 transitions. [2021-11-04 07:26:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 07:26:24,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:26:24,388 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] [2021-11-04 07:26:24,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 07:26:24,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 07:26:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:26:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1456651071, now seen corresponding path program 1 times [2021-11-04 07:26:24,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:26:24,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446418641] [2021-11-04 07:26:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:26:24,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:26:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:26:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 07:26:24,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:26:24,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446418641] [2021-11-04 07:26:24,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446418641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:26:24,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:26:24,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:26:24,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238321002] [2021-11-04 07:26:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:26:24,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:26:24,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:26:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:26:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:26:24,853 INFO L87 Difference]: Start difference. First operand 64798 states and 91673 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:31,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:08,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15