./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.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-43_2a-drivers--net--ethernet--atheros--alx--alx.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 73f2068ebecd267166c2d24f656fc1164bd021977ce12d612bec590cb9866503 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:52:16,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:52:16,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:52:16,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:52:16,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:52:16,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:52:16,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:52:16,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:52:16,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:52:17,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:52:17,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:52:17,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:52:17,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:52:17,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:52:17,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:52:17,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:52:17,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:52:17,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:52:17,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:52:17,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:52:17,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:52:17,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:52:17,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:52:17,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:52:17,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:52:17,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:52:17,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:52:17,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:52:17,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:52:17,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:52:17,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:52:17,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:52:17,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:52:17,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:52:17,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:52:17,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:52:17,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:52:17,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:52:17,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:52:17,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:52:17,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:52:17,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:52:17,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:52:17,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:52:17,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:52:17,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:52:17,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:52:17,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:52:17,057 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:52:17,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:52:17,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:52:17,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:52:17,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:52:17,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:52:17,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:52:17,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:52:17,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:52:17,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:52:17,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:52:17,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:52:17,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:52:17,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:52:17,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:52:17,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:52:17,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:52:17,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:52:17,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:52:17,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:52:17,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:52:17,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:52:17,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:52:17,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73f2068ebecd267166c2d24f656fc1164bd021977ce12d612bec590cb9866503 [2021-11-04 07:52:17,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:52:17,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:52:17,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:52:17,281 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:52:17,282 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:52:17,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i [2021-11-04 07:52:17,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17288709/541ab51027c24e57b5ccfa7f7bb7f32c/FLAGd1360361c [2021-11-04 07:52:17,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:52:17,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i [2021-11-04 07:52:18,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17288709/541ab51027c24e57b5ccfa7f7bb7f32c/FLAGd1360361c [2021-11-04 07:52:18,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d17288709/541ab51027c24e57b5ccfa7f7bb7f32c [2021-11-04 07:52:18,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:52:18,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:52:18,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:52:18,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:52:18,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:52:18,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:52:18" (1/1) ... [2021-11-04 07:52:18,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5153216b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:18, skipping insertion in model container [2021-11-04 07:52:18,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:52:18" (1/1) ... [2021-11-04 07:52:18,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:52:18,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:52:20,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i[381779,381792] [2021-11-04 07:52:20,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:52:20,335 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:52:20,603 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i[381779,381792] [2021-11-04 07:52:20,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:52:20,823 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:52:20,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20 WrapperNode [2021-11-04 07:52:20,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:52:20,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:52:20,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:52:20,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:52:20,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:20,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:23,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:52:23,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:52:23,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:52:23,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:52:23,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:23,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:24,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:24,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:25,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:25,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:26,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:26,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:52:26,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:52:26,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:52:26,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:52:26,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (1/1) ... [2021-11-04 07:52:26,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:52:26,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:52:26,786 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 07:52:26,791 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 07:52:26,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:52:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-04 07:52:26,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 07:52:26,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:52:26,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:52:26,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:52:35,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:52:35,327 INFO L299 CfgBuilder]: Removed 28140 assume(true) statements. [2021-11-04 07:52:35,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:52:35 BoogieIcfgContainer [2021-11-04 07:52:35,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:52:35,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:52:35,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:52:35,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:52:35,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:52:18" (1/3) ... [2021-11-04 07:52:35,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccfc37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:52:35, skipping insertion in model container [2021-11-04 07:52:35,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:52:20" (2/3) ... [2021-11-04 07:52:35,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccfc37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:52:35, skipping insertion in model container [2021-11-04 07:52:35,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:52:35" (3/3) ... [2021-11-04 07:52:35,347 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--atheros--alx--alx.ko-entry_point.cil.out.i [2021-11-04 07:52:35,350 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:52:35,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2021-11-04 07:52:35,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:52:35,427 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 07:52:35,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-11-04 07:52:35,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 19495 states, 19467 states have (on average 1.258488724508142) internal successors, (24499), 19494 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states 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 07:52:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-04 07:52:35,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:52:35,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:52:35,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:52:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:52:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1275802057, now seen corresponding path program 1 times [2021-11-04 07:52:35,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:52:35,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23875331] [2021-11-04 07:52:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:52:35,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:52:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:52:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:52:36,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:52:36,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23875331] [2021-11-04 07:52:36,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23875331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:52:36,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:52:36,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:52:36,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344546934] [2021-11-04 07:52:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:52:36,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:52:36,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:52:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:52:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:52:36,140 INFO L87 Difference]: Start difference. First operand has 19495 states, 19467 states have (on average 1.258488724508142) internal successors, (24499), 19494 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:52:43,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:52:52,529 WARN L515 Checker$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 07:52:54,643 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 07:53:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:53:01,796 INFO L93 Difference]: Finished difference Result 38974 states and 48977 transitions. [2021-11-04 07:53:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:53:01,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-04 07:53:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:53:01,887 INFO L225 Difference]: With dead ends: 38974 [2021-11-04 07:53:01,887 INFO L226 Difference]: Without dead ends: 19363 [2021-11-04 07:53:01,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:53:01,930 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24299 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21401.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 24302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24299 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25052.22ms IncrementalHoareTripleChecker+Time [2021-11-04 07:53:01,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 24302 Unknown, 0 Unchecked, 18.49ms Time], IncrementalHoareTripleChecker [0 Valid, 24299 Invalid, 3 Unknown, 0 Unchecked, 25052.22ms Time] [2021-11-04 07:53:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19363 states. [2021-11-04 07:53:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19363 to 19363. [2021-11-04 07:53:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19363 states, 19336 states have (on average 1.250568887050062) internal successors, (24181), 19362 states have internal predecessors, (24181), 0 states have call successors, (0), 0 states 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 07:53:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19363 states to 19363 states and 24181 transitions. [2021-11-04 07:53:02,497 INFO L78 Accepts]: Start accepts. Automaton has 19363 states and 24181 transitions. Word has length 56 [2021-11-04 07:53:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:53:02,497 INFO L470 AbstractCegarLoop]: Abstraction has 19363 states and 24181 transitions. [2021-11-04 07:53:02,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:53:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 19363 states and 24181 transitions. [2021-11-04 07:53:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-04 07:53:02,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:53:02,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:53:02,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:53:02,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:53:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:53:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash -614118701, now seen corresponding path program 1 times [2021-11-04 07:53:02,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:53:02,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404593884] [2021-11-04 07:53:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:53:02,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:53:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:53:02,801 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 07:53:02,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:53:02,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404593884] [2021-11-04 07:53:02,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404593884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:53:02,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:53:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:53:02,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643869437] [2021-11-04 07:53:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:53:02,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:53:02,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:53:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:53:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:53:02,806 INFO L87 Difference]: Start difference. First operand 19363 states and 24181 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:53:10,159 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 07:53:12,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:53:21,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:53:22,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:53:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:53:36,170 INFO L93 Difference]: Finished difference Result 38708 states and 48349 transitions. [2021-11-04 07:53:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:53:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-04 07:53:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:53:36,232 INFO L225 Difference]: With dead ends: 38708 [2021-11-04 07:53:36,232 INFO L226 Difference]: Without dead ends: 19369 [2021-11-04 07:53:36,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:53:36,260 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 23941 mSDsCounter, 0 mSdLazyCounter, 48355 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28207.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.20ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32727.78ms IncrementalHoareTripleChecker+Time [2021-11-04 07:53:36,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 48366 Unknown, 0 Unchecked, 65.20ms Time], IncrementalHoareTripleChecker [10 Valid, 48355 Invalid, 1 Unknown, 0 Unchecked, 32727.78ms Time] [2021-11-04 07:53:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19369 states. [2021-11-04 07:53:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19369 to 19369. [2021-11-04 07:53:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19369 states, 19342 states have (on average 1.2504911591355599) internal successors, (24187), 19368 states have internal predecessors, (24187), 0 states have call successors, (0), 0 states 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 07:53:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19369 states to 19369 states and 24187 transitions. [2021-11-04 07:53:36,584 INFO L78 Accepts]: Start accepts. Automaton has 19369 states and 24187 transitions. Word has length 56 [2021-11-04 07:53:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:53:36,585 INFO L470 AbstractCegarLoop]: Abstraction has 19369 states and 24187 transitions. [2021-11-04 07:53:36,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:53:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19369 states and 24187 transitions. [2021-11-04 07:53:36,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 07:53:36,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:53:36,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:53:36,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:53:36,592 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:53:36,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:53:36,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1322108958, now seen corresponding path program 1 times [2021-11-04 07:53:36,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:53:36,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944025597] [2021-11-04 07:53:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:53:36,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:53:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:53:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:53:36,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:53:36,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944025597] [2021-11-04 07:53:36,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944025597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:53:36,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:53:36,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:53:36,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007534336] [2021-11-04 07:53:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:53:36,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:53:37,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:53:37,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:53:37,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:53:37,001 INFO L87 Difference]: Start difference. First operand 19369 states and 24187 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 07:53:45,422 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 07:53:56,033 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 07:54:09,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:54:09,833 INFO L93 Difference]: Finished difference Result 38707 states and 48341 transitions. [2021-11-04 07:54:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:54:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-04 07:54:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:54:09,865 INFO L225 Difference]: With dead ends: 38707 [2021-11-04 07:54:09,866 INFO L226 Difference]: Without dead ends: 19370 [2021-11-04 07:54:09,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:54:09,894 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 23940 mSDsCounter, 0 mSdLazyCounter, 48358 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27559.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48358 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32309.48ms IncrementalHoareTripleChecker+Time [2021-11-04 07:54:09,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 48360 Unknown, 0 Unchecked, 42.35ms Time], IncrementalHoareTripleChecker [0 Valid, 48358 Invalid, 2 Unknown, 0 Unchecked, 32309.48ms Time] [2021-11-04 07:54:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19370 states. [2021-11-04 07:54:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19370 to 19370. [2021-11-04 07:54:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19370 states, 19343 states have (on average 1.2504782091712765) internal successors, (24188), 19369 states have internal predecessors, (24188), 0 states have call successors, (0), 0 states 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 07:54:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19370 states to 19370 states and 24188 transitions. [2021-11-04 07:54:10,190 INFO L78 Accepts]: Start accepts. Automaton has 19370 states and 24188 transitions. Word has length 59 [2021-11-04 07:54:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:54:10,191 INFO L470 AbstractCegarLoop]: Abstraction has 19370 states and 24188 transitions. [2021-11-04 07:54:10,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 07:54:10,191 INFO L276 IsEmpty]: Start isEmpty. Operand 19370 states and 24188 transitions. [2021-11-04 07:54:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-04 07:54:10,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:54:10,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:54:10,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 07:54:10,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:54:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:54:10,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1487222935, now seen corresponding path program 1 times [2021-11-04 07:54:10,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:54:10,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093122441] [2021-11-04 07:54:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:54:10,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:54:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:54:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 07:54:10,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:54:10,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093122441] [2021-11-04 07:54:10,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093122441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:54:10,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:54:10,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:54:10,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331844257] [2021-11-04 07:54:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:54:10,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:54:10,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:54:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:54:10,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:54:10,416 INFO L87 Difference]: Start difference. First operand 19370 states and 24188 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 07:54:15,258 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 07:54:40,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:54:43,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:54:45,601 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 07:54:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:54:53,429 INFO L93 Difference]: Finished difference Result 55385 states and 69172 transitions. [2021-11-04 07:54:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:54:53,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-04 07:54:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:54:53,489 INFO L225 Difference]: With dead ends: 55385 [2021-11-04 07:54:53,489 INFO L226 Difference]: Without dead ends: 36056 [2021-11-04 07:54:53,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:54:53,519 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 20874 mSDsluCounter, 24031 mSDsCounter, 0 mSdLazyCounter, 48305 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35412.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20874 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.42ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48305 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41843.65ms IncrementalHoareTripleChecker+Time [2021-11-04 07:54:53,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20874 Valid, 0 Invalid, 48314 Unknown, 0 Unchecked, 59.42ms Time], IncrementalHoareTripleChecker [7 Valid, 48305 Invalid, 2 Unknown, 0 Unchecked, 41843.65ms Time] [2021-11-04 07:54:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36056 states. [2021-11-04 07:54:54,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36056 to 34619. [2021-11-04 07:54:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34619 states, 34592 states have (on average 1.250317992599445) internal successors, (43251), 34618 states have internal predecessors, (43251), 0 states have call successors, (0), 0 states 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 07:54:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34619 states to 34619 states and 43251 transitions. [2021-11-04 07:54:54,100 INFO L78 Accepts]: Start accepts. Automaton has 34619 states and 43251 transitions. Word has length 60 [2021-11-04 07:54:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:54:54,101 INFO L470 AbstractCegarLoop]: Abstraction has 34619 states and 43251 transitions. [2021-11-04 07:54:54,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 07:54:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 34619 states and 43251 transitions. [2021-11-04 07:54:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 07:54:54,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:54:54,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:54:54,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 07:54:54,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:54:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:54:54,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2047471213, now seen corresponding path program 1 times [2021-11-04 07:54:54,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:54:54,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359412137] [2021-11-04 07:54:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:54:54,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:54:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:54:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 07:54:54,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:54:54,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359412137] [2021-11-04 07:54:54,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359412137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:54:54,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:54:54,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:54:54,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062434274] [2021-11-04 07:54:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:54:54,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:54:54,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:54:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:54:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:54:54,304 INFO L87 Difference]: Start difference. First operand 34619 states and 43251 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 07:54:58,180 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 07:55:31,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:55:33,544 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:55:38,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:55:38,425 INFO L93 Difference]: Finished difference Result 100886 states and 126081 transitions. [2021-11-04 07:55:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:55:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-04 07:55:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:55:38,536 INFO L225 Difference]: With dead ends: 100886 [2021-11-04 07:55:38,536 INFO L226 Difference]: Without dead ends: 66308 [2021-11-04 07:55:38,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:55:38,600 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22377 mSDsluCounter, 24102 mSDsCounter, 0 mSdLazyCounter, 48316 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35456.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22377 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48316 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42332.31ms IncrementalHoareTripleChecker+Time [2021-11-04 07:55:38,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22377 Valid, 0 Invalid, 48320 Unknown, 0 Unchecked, 55.05ms Time], IncrementalHoareTripleChecker [2 Valid, 48316 Invalid, 2 Unknown, 0 Unchecked, 42332.31ms Time] [2021-11-04 07:55:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66308 states. [2021-11-04 07:55:39,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66308 to 66120. [2021-11-04 07:55:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66120 states, 66093 states have (on average 1.2513881954216028) internal successors, (82708), 66119 states have internal predecessors, (82708), 0 states have call successors, (0), 0 states 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 07:55:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66120 states to 66120 states and 82708 transitions. [2021-11-04 07:55:39,674 INFO L78 Accepts]: Start accepts. Automaton has 66120 states and 82708 transitions. Word has length 88 [2021-11-04 07:55:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:55:39,676 INFO L470 AbstractCegarLoop]: Abstraction has 66120 states and 82708 transitions. [2021-11-04 07:55:39,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 07:55:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 66120 states and 82708 transitions. [2021-11-04 07:55:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-04 07:55:39,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:55:39,691 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:55:39,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 07:55:39,691 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:55:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:55:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash -658228727, now seen corresponding path program 1 times [2021-11-04 07:55:39,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:55:39,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874093300] [2021-11-04 07:55:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:55:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:55:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:55:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 07:55:39,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:55:39,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874093300] [2021-11-04 07:55:39,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874093300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:55:39,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:55:39,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:55:39,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477412955] [2021-11-04 07:55:39,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:55:39,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:55:39,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:55:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:55:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:55:39,920 INFO L87 Difference]: Start difference. First operand 66120 states and 82708 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 07:55:44,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:55:46,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:55:55,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:56:19,558 WARN L515 Checker$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 07:56:29,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:56:32,131 WARN L515 Checker$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 07:56:33,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:56:35,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:56:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:56:42,024 INFO L93 Difference]: Finished difference Result 163921 states and 205062 transitions. [2021-11-04 07:56:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:56:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2021-11-04 07:56:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:56:42,209 INFO L225 Difference]: With dead ends: 163921 [2021-11-04 07:56:42,209 INFO L226 Difference]: Without dead ends: 97842 [2021-11-04 07:56:42,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:56:42,310 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22839 mSDsluCounter, 23646 mSDsCounter, 0 mSdLazyCounter, 70189 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51431.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22839 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.27ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 70189 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60025.40ms IncrementalHoareTripleChecker+Time [2021-11-04 07:56:42,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22839 Valid, 0 Invalid, 70212 Unknown, 0 Unchecked, 61.27ms Time], IncrementalHoareTripleChecker [18 Valid, 70189 Invalid, 5 Unknown, 0 Unchecked, 60025.40ms Time] [2021-11-04 07:56:42,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97842 states. [2021-11-04 07:56:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97842 to 97550. [2021-11-04 07:56:43,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97550 states, 97523 states have (on average 1.2520738697538016) internal successors, (122106), 97549 states have internal predecessors, (122106), 0 states have call successors, (0), 0 states 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 07:56:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97550 states to 97550 states and 122106 transitions. [2021-11-04 07:56:44,270 INFO L78 Accepts]: Start accepts. Automaton has 97550 states and 122106 transitions. Word has length 132 [2021-11-04 07:56:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:56:44,271 INFO L470 AbstractCegarLoop]: Abstraction has 97550 states and 122106 transitions. [2021-11-04 07:56:44,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 07:56:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 97550 states and 122106 transitions. [2021-11-04 07:56:44,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-04 07:56:44,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:56:44,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:56:44,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 07:56:44,289 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:56:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:56:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash -703987403, now seen corresponding path program 1 times [2021-11-04 07:56:44,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:56:44,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856152473] [2021-11-04 07:56:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:56:44,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:56:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:56:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 07:56:44,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:56:44,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856152473] [2021-11-04 07:56:44,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856152473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:56:44,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:56:44,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:56:44,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617407377] [2021-11-04 07:56:44,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:56:44,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:56:44,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:56:44,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:56:44,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:56:44,570 INFO L87 Difference]: Start difference. First operand 97550 states and 122106 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 07:56:49,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:57:15,379 WARN L515 Checker$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 07:57:17,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:57:23,373 WARN L515 Checker$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 07:57:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:57:24,785 INFO L93 Difference]: Finished difference Result 126453 states and 159269 transitions. [2021-11-04 07:57:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:57:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-11-04 07:57:24,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:57:25,035 INFO L225 Difference]: With dead ends: 126453 [2021-11-04 07:57:25,035 INFO L226 Difference]: Without dead ends: 126399 [2021-11-04 07:57:25,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:57:25,080 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13685 mSDsluCounter, 18629 mSDsCounter, 0 mSdLazyCounter, 43078 mSolverCounterSat, 306 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32621.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.56ms SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 43078 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38361.84ms IncrementalHoareTripleChecker+Time [2021-11-04 07:57:25,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13685 Valid, 0 Invalid, 43388 Unknown, 0 Unchecked, 47.56ms Time], IncrementalHoareTripleChecker [306 Valid, 43078 Invalid, 4 Unknown, 0 Unchecked, 38361.84ms Time] [2021-11-04 07:57:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126399 states. [2021-11-04 07:57:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126399 to 125337. [2021-11-04 07:57:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125337 states, 125326 states have (on average 1.2590204746022373) internal successors, (157788), 125336 states have internal predecessors, (157788), 0 states have call successors, (0), 0 states 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 07:57:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125337 states to 125337 states and 157788 transitions. [2021-11-04 07:57:27,565 INFO L78 Accepts]: Start accepts. Automaton has 125337 states and 157788 transitions. Word has length 141 [2021-11-04 07:57:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:57:27,565 INFO L470 AbstractCegarLoop]: Abstraction has 125337 states and 157788 transitions. [2021-11-04 07:57:27,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 07:57:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 125337 states and 157788 transitions. [2021-11-04 07:57:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-04 07:57:27,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:57:27,590 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:57:27,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 07:57:27,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:57:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:57:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1473413465, now seen corresponding path program 1 times [2021-11-04 07:57:27,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:57:27,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512339424] [2021-11-04 07:57:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:57:27,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:57:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:57:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 07:57:27,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:57:27,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512339424] [2021-11-04 07:57:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512339424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:57:27,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:57:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:57:27,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348179525] [2021-11-04 07:57:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:57:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:57:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:57:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:57:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:57:27,755 INFO L87 Difference]: Start difference. First operand 125337 states and 157788 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 07:57:36,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:58:05,290 WARN L515 Checker$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 07:58:14,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:58:17,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:58:19,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:58:21,642 WARN L515 Checker$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 07:58:23,763 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 07:58:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:58:27,483 INFO L93 Difference]: Finished difference Result 370202 states and 466043 transitions. [2021-11-04 07:58:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:58:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-04 07:58:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:58:28,032 INFO L225 Difference]: With dead ends: 370202 [2021-11-04 07:58:28,032 INFO L226 Difference]: Without dead ends: 244906 [2021-11-04 07:58:28,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:58:28,226 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22258 mSDsluCounter, 24093 mSDsCounter, 0 mSdLazyCounter, 53312 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47200.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53312 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54792.28ms IncrementalHoareTripleChecker+Time [2021-11-04 07:58:28,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22258 Valid, 0 Invalid, 53320 Unknown, 0 Unchecked, 59.85ms Time], IncrementalHoareTripleChecker [2 Valid, 53312 Invalid, 6 Unknown, 0 Unchecked, 54792.28ms Time] [2021-11-04 07:58:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244906 states. [2021-11-04 07:58:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244906 to 244456. [2021-11-04 07:58:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244456 states, 244445 states have (on average 1.2593794105013398) internal successors, (307849), 244455 states have internal predecessors, (307849), 0 states have call successors, (0), 0 states 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 07:58:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244456 states to 244456 states and 307849 transitions. [2021-11-04 07:58:33,510 INFO L78 Accepts]: Start accepts. Automaton has 244456 states and 307849 transitions. Word has length 148 [2021-11-04 07:58:33,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:58:33,511 INFO L470 AbstractCegarLoop]: Abstraction has 244456 states and 307849 transitions. [2021-11-04 07:58:33,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 07:58:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 244456 states and 307849 transitions. [2021-11-04 07:58:33,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-04 07:58:33,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:58:33,575 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:58:33,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 07:58:33,576 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:58:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:58:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 16764181, now seen corresponding path program 1 times [2021-11-04 07:58:33,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:58:33,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110579734] [2021-11-04 07:58:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:58:33,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:58:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:58:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 07:58:33,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:58:33,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110579734] [2021-11-04 07:58:33,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110579734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:58:33,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:58:33,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:58:33,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549403604] [2021-11-04 07:58:33,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:58:33,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:58:33,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:58:33,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:58:33,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:58:33,755 INFO L87 Difference]: Start difference. First operand 244456 states and 307849 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 07:58:43,313 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 07:59:04,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:59:06,449 WARN L515 Checker$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 07:59:08,725 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 07:59:11,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:59:11,308 INFO L93 Difference]: Finished difference Result 488875 states and 615657 transitions. [2021-11-04 07:59:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:59:11,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-04 07:59:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:59:11,833 INFO L225 Difference]: With dead ends: 488875 [2021-11-04 07:59:11,834 INFO L226 Difference]: Without dead ends: 244448 [2021-11-04 07:59:12,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:59:12,165 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 24140 mSDsCounter, 0 mSdLazyCounter, 48289 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27971.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48289 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32520.21ms IncrementalHoareTripleChecker+Time [2021-11-04 07:59:12,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 48293 Unknown, 0 Unchecked, 36.11ms Time], IncrementalHoareTripleChecker [0 Valid, 48289 Invalid, 4 Unknown, 0 Unchecked, 32520.21ms Time] [2021-11-04 07:59:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244448 states. [2021-11-04 07:59:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244448 to 244376. [2021-11-04 07:59:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244376 states, 244365 states have (on average 1.2594152190370962) internal successors, (307757), 244375 states have internal predecessors, (307757), 0 states have call successors, (0), 0 states 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 07:59:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244376 states to 244376 states and 307757 transitions. [2021-11-04 07:59:17,527 INFO L78 Accepts]: Start accepts. Automaton has 244376 states and 307757 transitions. Word has length 172 [2021-11-04 07:59:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:59:17,527 INFO L470 AbstractCegarLoop]: Abstraction has 244376 states and 307757 transitions. [2021-11-04 07:59:17,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 07:59:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 244376 states and 307757 transitions. [2021-11-04 07:59:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-04 07:59:17,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:59:17,616 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:59:17,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 07:59:17,616 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 24 more)] === [2021-11-04 07:59:17,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:59:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1765808885, now seen corresponding path program 1 times [2021-11-04 07:59:17,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:59:17,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382621044] [2021-11-04 07:59:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:59:17,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:59:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:59:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 07:59:17,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:59:17,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382621044] [2021-11-04 07:59:17,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382621044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:59:17,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:59:17,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 07:59:17,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377217751] [2021-11-04 07:59:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:59:17,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 07:59:17,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:59:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 07:59:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:59:17,832 INFO L87 Difference]: Start difference. First operand 244376 states and 307757 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 07:59:39,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:59:41,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:59:43,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:59:45,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:59:47,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []