./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--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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--usb--class--cdc-acm.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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:40:07,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:40:07,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:40:07,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:40:07,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:40:07,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:40:07,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:40:07,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:40:07,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:40:07,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:40:07,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:40:07,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:40:07,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:40:07,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:40:07,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:40:07,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:40:07,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:40:07,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:40:07,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:40:07,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:40:07,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:40:07,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:40:07,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:40:07,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:40:07,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:40:07,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:40:07,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:40:07,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:40:07,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:40:07,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:40:07,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:40:07,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:40:07,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:40:07,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:40:07,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:40:07,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:40:07,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:40:07,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:40:07,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:40:07,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:40:07,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:40:08,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:40:08,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:40:08,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:40:08,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:40:08,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:40:08,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:40:08,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:40:08,024 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:40:08,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:40:08,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:40:08,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:40:08,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:40:08,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:40:08,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:40:08,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:40:08,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:40:08,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:40:08,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:40:08,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:40:08,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:40:08,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:40:08,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:40:08,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:40:08,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:40:08,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-05 19:40:08,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:40:08,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:40:08,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:40:08,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:40:08,333 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:40:08,334 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 19:40:08,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8492d59f/1c30e4b175544007a8f1eccc12cdc18d/FLAG55c140ae5 [2021-11-05 19:40:09,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:40:09,042 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 19:40:09,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8492d59f/1c30e4b175544007a8f1eccc12cdc18d/FLAG55c140ae5 [2021-11-05 19:40:09,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8492d59f/1c30e4b175544007a8f1eccc12cdc18d [2021-11-05 19:40:09,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:40:09,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:40:09,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:40:09,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:40:09,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:40:09,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:40:09" (1/1) ... [2021-11-05 19:40:09,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7697f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:09, skipping insertion in model container [2021-11-05 19:40:09,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:40:09" (1/1) ... [2021-11-05 19:40:09,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:40:09,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:40:10,780 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-05 19:40:10,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:40:10,883 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:40:11,185 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-05 19:40:11,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:40:11,387 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:40:11,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11 WrapperNode [2021-11-05 19:40:11,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:40:11,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:40:11,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:40:11,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:40:11,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:11,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:11,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:40:11,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:40:11,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:40:11,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:40:11,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:11,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:40:12,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:40:12,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:40:12,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:40:12,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (1/1) ... [2021-11-05 19:40:12,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:40:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:40:12,340 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) [2021-11-05 19:40:12,362 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 [2021-11-05 19:40:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-05 19:40:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 19:40:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:40:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:40:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:40:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:40:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:40:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:40:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 19:40:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:40:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:40:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:40:42,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:40:42,699 INFO L299 CfgBuilder]: Removed 1993 assume(true) statements. [2021-11-05 19:40:42,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:40:42 BoogieIcfgContainer [2021-11-05 19:40:42,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:40:42,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:40:42,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:40:42,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:40:42,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:40:09" (1/3) ... [2021-11-05 19:40:42,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:40:42, skipping insertion in model container [2021-11-05 19:40:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:40:11" (2/3) ... [2021-11-05 19:40:42,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebf41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:40:42, skipping insertion in model container [2021-11-05 19:40:42,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:40:42" (3/3) ... [2021-11-05 19:40:42,709 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 19:40:42,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:40:42,712 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-05 19:40:42,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:40:42,763 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 [2021-11-05 19:40:42,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-05 19:40:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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) [2021-11-05 19:40:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 19:40:42,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:42,818 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] [2021-11-05 19:40:42,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1062845019, now seen corresponding path program 1 times [2021-11-05 19:40:42,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:42,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205479134] [2021-11-05 19:40:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:42,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:43,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:43,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205479134] [2021-11-05 19:40:43,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205479134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:43,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:43,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:40:43,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466366407] [2021-11-05 19:40:43,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:43,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:40:43,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:40:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:40:43,635 INFO L87 Difference]: Start difference. First operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-11-05 19:40:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:43,720 INFO L93 Difference]: Finished difference Result 4048 states and 5647 transitions. [2021-11-05 19:40:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:40:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2021-11-05 19:40:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:43,742 INFO L225 Difference]: With dead ends: 4048 [2021-11-05 19:40:43,742 INFO L226 Difference]: Without dead ends: 2009 [2021-11-05 19:40:43,751 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 [2021-11-05 19:40:43,754 INFO L933 BasicCegarLoop]: 2740 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:43,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:40:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-05 19:40:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2009. [2021-11-05 19:40:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1990 states have (on average 1.3633165829145728) internal successors, (2713), 2008 states have internal predecessors, (2713), 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) [2021-11-05 19:40:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2713 transitions. [2021-11-05 19:40:43,847 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2713 transitions. Word has length 103 [2021-11-05 19:40:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:43,848 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2713 transitions. [2021-11-05 19:40:43,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-11-05 19:40:43,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2713 transitions. [2021-11-05 19:40:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 19:40:43,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:43,851 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] [2021-11-05 19:40:43,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:40:43,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:43,852 INFO L85 PathProgramCache]: Analyzing trace with hash 666457411, now seen corresponding path program 1 times [2021-11-05 19:40:43,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:43,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604145591] [2021-11-05 19:40:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:43,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:44,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:44,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604145591] [2021-11-05 19:40:44,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604145591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:44,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:44,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:40:44,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753958456] [2021-11-05 19:40:44,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:44,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:40:44,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:40:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:44,391 INFO L87 Difference]: Start difference. First operand 2009 states and 2713 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-05 19:40:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:44,715 INFO L93 Difference]: Finished difference Result 5095 states and 6983 transitions. [2021-11-05 19:40:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:40:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-05 19:40:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:44,726 INFO L225 Difference]: With dead ends: 5095 [2021-11-05 19:40:44,727 INFO L226 Difference]: Without dead ends: 3170 [2021-11-05 19:40:44,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:44,731 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 1733 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.11ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:44,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 8.98ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 250.11ms Time] [2021-11-05 19:40:44,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-05 19:40:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3159. [2021-11-05 19:40:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3140 states have (on average 1.3869426751592357) internal successors, (4355), 3158 states have internal predecessors, (4355), 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) [2021-11-05 19:40:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4355 transitions. [2021-11-05 19:40:44,792 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4355 transitions. Word has length 103 [2021-11-05 19:40:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:44,793 INFO L470 AbstractCegarLoop]: Abstraction has 3159 states and 4355 transitions. [2021-11-05 19:40:44,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-05 19:40:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4355 transitions. [2021-11-05 19:40:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-05 19:40:44,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:44,795 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] [2021-11-05 19:40:44,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:40:44,795 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:44,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -211769177, now seen corresponding path program 1 times [2021-11-05 19:40:44,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:44,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509205484] [2021-11-05 19:40:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:44,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:45,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:45,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509205484] [2021-11-05 19:40:45,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509205484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:45,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:45,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:40:45,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70596269] [2021-11-05 19:40:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:45,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:40:45,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:45,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:40:45,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:45,290 INFO L87 Difference]: Start difference. First operand 3159 states and 4355 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-05 19:40:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:45,612 INFO L93 Difference]: Finished difference Result 8855 states and 12269 transitions. [2021-11-05 19:40:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:40:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-05 19:40:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:45,633 INFO L225 Difference]: With dead ends: 8855 [2021-11-05 19:40:45,634 INFO L226 Difference]: Without dead ends: 5780 [2021-11-05 19:40:45,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:45,644 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 2395 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.33ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:45,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2395 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 225.33ms Time] [2021-11-05 19:40:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2021-11-05 19:40:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5720. [2021-11-05 19:40:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5701 states have (on average 1.3960708647605684) internal successors, (7959), 5719 states have internal predecessors, (7959), 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) [2021-11-05 19:40:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 7959 transitions. [2021-11-05 19:40:45,750 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 7959 transitions. Word has length 104 [2021-11-05 19:40:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:45,750 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 7959 transitions. [2021-11-05 19:40:45,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-05 19:40:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 7959 transitions. [2021-11-05 19:40:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 19:40:45,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:45,752 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] [2021-11-05 19:40:45,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:40:45,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1985592461, now seen corresponding path program 1 times [2021-11-05 19:40:45,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:45,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941778532] [2021-11-05 19:40:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:45,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:46,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:46,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941778532] [2021-11-05 19:40:46,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941778532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:46,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:46,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:40:46,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146228422] [2021-11-05 19:40:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:46,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:40:46,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:40:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:46,100 INFO L87 Difference]: Start difference. First operand 5720 states and 7959 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-05 19:40:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:46,758 INFO L93 Difference]: Finished difference Result 13638 states and 18852 transitions. [2021-11-05 19:40:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:40:46,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2021-11-05 19:40:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:46,783 INFO L225 Difference]: With dead ends: 13638 [2021-11-05 19:40:46,784 INFO L226 Difference]: Without dead ends: 8002 [2021-11-05 19:40:46,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:46,796 INFO L933 BasicCegarLoop]: 3015 mSDtfsCounter, 1481 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 474.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5552 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 525.25ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:46,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 5552 Invalid, 86 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 525.25ms Time] [2021-11-05 19:40:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-11-05 19:40:46,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 7970. [2021-11-05 19:40:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7970 states, 7951 states have (on average 1.3790718148660546) internal successors, (10965), 7969 states have internal predecessors, (10965), 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) [2021-11-05 19:40:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 10965 transitions. [2021-11-05 19:40:46,972 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 10965 transitions. Word has length 108 [2021-11-05 19:40:46,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:46,973 INFO L470 AbstractCegarLoop]: Abstraction has 7970 states and 10965 transitions. [2021-11-05 19:40:46,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-11-05 19:40:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 10965 transitions. [2021-11-05 19:40:46,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 19:40:46,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:46,975 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:40:46,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:40:46,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1132510402, now seen corresponding path program 1 times [2021-11-05 19:40:46,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:46,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874075904] [2021-11-05 19:40:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:46,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:47,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:47,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874075904] [2021-11-05 19:40:47,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874075904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:47,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:47,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:40:47,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699003730] [2021-11-05 19:40:47,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:47,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:40:47,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:40:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:40:47,488 INFO L87 Difference]: Start difference. First operand 7970 states and 10965 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-05 19:40:47,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:47,960 INFO L93 Difference]: Finished difference Result 23528 states and 32456 transitions. [2021-11-05 19:40:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:40:47,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2021-11-05 19:40:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:48,018 INFO L225 Difference]: With dead ends: 23528 [2021-11-05 19:40:48,019 INFO L226 Difference]: Without dead ends: 15642 [2021-11-05 19:40:48,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:40:48,037 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 6257 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6257 SdHoareTripleChecker+Valid, 7037 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.39ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.23ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:48,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6257 Valid, 7037 Invalid, 15 Unknown, 0 Unchecked, 12.39ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 148.23ms Time] [2021-11-05 19:40:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15642 states. [2021-11-05 19:40:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15642 to 7814. [2021-11-05 19:40:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7795 states have (on average 1.38216805644644) internal successors, (10774), 7813 states have internal predecessors, (10774), 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) [2021-11-05 19:40:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10774 transitions. [2021-11-05 19:40:48,304 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10774 transitions. Word has length 137 [2021-11-05 19:40:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:48,305 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 10774 transitions. [2021-11-05 19:40:48,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2021-11-05 19:40:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10774 transitions. [2021-11-05 19:40:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 19:40:48,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:48,312 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:40:48,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:40:48,312 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash 93089651, now seen corresponding path program 1 times [2021-11-05 19:40:48,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:48,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492202038] [2021-11-05 19:40:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:48,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:48,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:48,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492202038] [2021-11-05 19:40:48,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492202038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:48,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:48,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:40:48,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977574692] [2021-11-05 19:40:48,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:48,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:40:48,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:40:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:40:48,684 INFO L87 Difference]: Start difference. First operand 7814 states and 10774 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2021-11-05 19:40:50,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:40:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:51,128 INFO L93 Difference]: Finished difference Result 15548 states and 21460 transitions. [2021-11-05 19:40:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:40:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 139 [2021-11-05 19:40:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:51,145 INFO L225 Difference]: With dead ends: 15548 [2021-11-05 19:40:51,146 INFO L226 Difference]: Without dead ends: 7814 [2021-11-05 19:40:51,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:40:51,160 INFO L933 BasicCegarLoop]: 2711 mSDtfsCounter, 1 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2121.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2273.52ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:51,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 8125 Invalid, 10 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2273.52ms Time] [2021-11-05 19:40:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7814 states. [2021-11-05 19:40:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7814 to 7814. [2021-11-05 19:40:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7814 states, 7795 states have (on average 1.3819114817190508) internal successors, (10772), 7813 states have internal predecessors, (10772), 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) [2021-11-05 19:40:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 10772 transitions. [2021-11-05 19:40:51,332 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 10772 transitions. Word has length 139 [2021-11-05 19:40:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:51,333 INFO L470 AbstractCegarLoop]: Abstraction has 7814 states and 10772 transitions. [2021-11-05 19:40:51,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2021-11-05 19:40:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 10772 transitions. [2021-11-05 19:40:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 19:40:51,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:51,335 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:40:51,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:40:51,336 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:51,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:51,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1429478067, now seen corresponding path program 1 times [2021-11-05 19:40:51,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:51,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148358016] [2021-11-05 19:40:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:51,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:40:51,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:51,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148358016] [2021-11-05 19:40:51,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148358016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:51,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:51,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:40:51,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696104582] [2021-11-05 19:40:51,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:51,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:40:51,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:51,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:40:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:51,851 INFO L87 Difference]: Start difference. First operand 7814 states and 10772 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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) [2021-11-05 19:40:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:52,172 INFO L93 Difference]: Finished difference Result 7814 states and 10772 transitions. [2021-11-05 19:40:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:40:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 143 [2021-11-05 19:40:52,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:52,192 INFO L225 Difference]: With dead ends: 7814 [2021-11-05 19:40:52,192 INFO L226 Difference]: Without dead ends: 7790 [2021-11-05 19:40:52,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:52,197 INFO L933 BasicCegarLoop]: 2675 mSDtfsCounter, 2342 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.24ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:52,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 2834 Invalid, 74 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 209.24ms Time] [2021-11-05 19:40:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2021-11-05 19:40:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2021-11-05 19:40:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7783 states have (on average 1.3763330335346267) internal successors, (10712), 7789 states have internal predecessors, (10712), 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) [2021-11-05 19:40:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 10712 transitions. [2021-11-05 19:40:52,408 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 10712 transitions. Word has length 143 [2021-11-05 19:40:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:52,408 INFO L470 AbstractCegarLoop]: Abstraction has 7790 states and 10712 transitions. [2021-11-05 19:40:52,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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) [2021-11-05 19:40:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 10712 transitions. [2021-11-05 19:40:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-05 19:40:52,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:52,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:40:52,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:40:52,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash 975428840, now seen corresponding path program 1 times [2021-11-05 19:40:52,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:52,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566975659] [2021-11-05 19:40:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:52,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:52,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:52,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566975659] [2021-11-05 19:40:52,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566975659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:52,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:52,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:40:52,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472935838] [2021-11-05 19:40:52,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:52,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:40:52,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:52,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:40:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:52,823 INFO L87 Difference]: Start difference. First operand 7790 states and 10712 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) [2021-11-05 19:40:54,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:40:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:55,790 INFO L93 Difference]: Finished difference Result 17882 states and 24605 transitions. [2021-11-05 19:40:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:40:55,791 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 [2021-11-05 19:40:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:55,810 INFO L225 Difference]: With dead ends: 17882 [2021-11-05 19:40:55,810 INFO L226 Difference]: Without dead ends: 10176 [2021-11-05 19:40:55,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:55,822 INFO L933 BasicCegarLoop]: 2788 mSDtfsCounter, 1954 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2587.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 4850 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.84ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2779.03ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:55,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 4850 Invalid, 140 Unknown, 0 Unchecked, 5.84ms Time], IncrementalHoareTripleChecker [53 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 2779.03ms Time] [2021-11-05 19:40:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10176 states. [2021-11-05 19:40:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10176 to 10112. [2021-11-05 19:40:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10112 states, 10105 states have (on average 1.3664522513607125) internal successors, (13808), 10111 states have internal predecessors, (13808), 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) [2021-11-05 19:40:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10112 states to 10112 states and 13808 transitions. [2021-11-05 19:40:56,073 INFO L78 Accepts]: Start accepts. Automaton has 10112 states and 13808 transitions. Word has length 148 [2021-11-05 19:40:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:56,074 INFO L470 AbstractCegarLoop]: Abstraction has 10112 states and 13808 transitions. [2021-11-05 19:40:56,074 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) [2021-11-05 19:40:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 10112 states and 13808 transitions. [2021-11-05 19:40:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 19:40:56,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:56,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:40:56,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 19:40:56,077 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:56,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:56,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1236843536, now seen corresponding path program 1 times [2021-11-05 19:40:56,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:56,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197690598] [2021-11-05 19:40:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:56,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:40:56,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:56,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197690598] [2021-11-05 19:40:56,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197690598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:56,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:56,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:40:56,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777404565] [2021-11-05 19:40:56,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:56,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:40:56,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:40:56,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:56,443 INFO L87 Difference]: Start difference. First operand 10112 states and 13808 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-11-05 19:40:58,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:40:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:40:59,155 INFO L93 Difference]: Finished difference Result 23042 states and 31702 transitions. [2021-11-05 19:40:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:40:59,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-05 19:40:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:40:59,183 INFO L225 Difference]: With dead ends: 23042 [2021-11-05 19:40:59,183 INFO L226 Difference]: Without dead ends: 13014 [2021-11-05 19:40:59,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:40:59,197 INFO L933 BasicCegarLoop]: 4317 mSDtfsCounter, 2187 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2311.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 6418 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.53ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2518.96ms IncrementalHoareTripleChecker+Time [2021-11-05 19:40:59,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 6418 Invalid, 35 Unknown, 0 Unchecked, 5.53ms Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2518.96ms Time] [2021-11-05 19:40:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13014 states. [2021-11-05 19:40:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13014 to 13011. [2021-11-05 19:40:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13011 states, 13004 states have (on average 1.379729314057213) internal successors, (17942), 13010 states have internal predecessors, (17942), 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) [2021-11-05 19:40:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13011 states to 13011 states and 17942 transitions. [2021-11-05 19:40:59,472 INFO L78 Accepts]: Start accepts. Automaton has 13011 states and 17942 transitions. Word has length 149 [2021-11-05 19:40:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:40:59,473 INFO L470 AbstractCegarLoop]: Abstraction has 13011 states and 17942 transitions. [2021-11-05 19:40:59,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-11-05 19:40:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13011 states and 17942 transitions. [2021-11-05 19:40:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-05 19:40:59,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:40:59,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:40:59,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 19:40:59,479 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:40:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:40:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1569447921, now seen corresponding path program 1 times [2021-11-05 19:40:59,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:40:59,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280975298] [2021-11-05 19:40:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:40:59,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:40:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:40:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:40:59,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:40:59,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280975298] [2021-11-05 19:40:59,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280975298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:40:59,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:40:59,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:40:59,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94091689] [2021-11-05 19:40:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:40:59,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:40:59,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:40:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:40:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:40:59,908 INFO L87 Difference]: Start difference. First operand 13011 states and 17942 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2021-11-05 19:41:02,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:41:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:02,731 INFO L93 Difference]: Finished difference Result 31435 states and 43274 transitions. [2021-11-05 19:41:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:41:02,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 159 [2021-11-05 19:41:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:02,771 INFO L225 Difference]: With dead ends: 31435 [2021-11-05 19:41:02,771 INFO L226 Difference]: Without dead ends: 18508 [2021-11-05 19:41:02,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:41:02,792 INFO L933 BasicCegarLoop]: 4902 mSDtfsCounter, 3885 mSDsluCounter, 5889 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2316.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3885 SdHoareTripleChecker+Valid, 10791 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.79ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2489.66ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:02,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3885 Valid, 10791 Invalid, 29 Unknown, 0 Unchecked, 11.79ms Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2489.66ms Time] [2021-11-05 19:41:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18508 states. [2021-11-05 19:41:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18508 to 13023. [2021-11-05 19:41:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.379379225568531) internal successors, (17954), 13022 states have internal predecessors, (17954), 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) [2021-11-05 19:41:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17954 transitions. [2021-11-05 19:41:03,199 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17954 transitions. Word has length 159 [2021-11-05 19:41:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:03,200 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17954 transitions. [2021-11-05 19:41:03,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2021-11-05 19:41:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17954 transitions. [2021-11-05 19:41:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 19:41:03,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:03,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:03,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 19:41:03,209 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:41:03,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:03,209 INFO L85 PathProgramCache]: Analyzing trace with hash 228838889, now seen corresponding path program 1 times [2021-11-05 19:41:03,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:03,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226481741] [2021-11-05 19:41:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:03,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:41:03,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:03,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226481741] [2021-11-05 19:41:03,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226481741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:03,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:03,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:41:03,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602106571] [2021-11-05 19:41:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:41:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:41:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:41:03,904 INFO L87 Difference]: Start difference. First operand 13023 states and 17954 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2021-11-05 19:41:06,100 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 [] [2021-11-05 19:41:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:06,394 INFO L93 Difference]: Finished difference Result 26045 states and 35933 transitions. [2021-11-05 19:41:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:41:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-05 19:41:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:06,421 INFO L225 Difference]: With dead ends: 26045 [2021-11-05 19:41:06,422 INFO L226 Difference]: Without dead ends: 13099 [2021-11-05 19:41:06,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:41:06,442 INFO L933 BasicCegarLoop]: 2686 mSDtfsCounter, 201 mSDsluCounter, 5269 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2149.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 7955 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2189.89ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:06,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 7955 Invalid, 15 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2189.89ms Time] [2021-11-05 19:41:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13099 states. [2021-11-05 19:41:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13099 to 13023. [2021-11-05 19:41:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.3791487400122926) internal successors, (17951), 13022 states have internal predecessors, (17951), 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) [2021-11-05 19:41:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17951 transitions. [2021-11-05 19:41:06,739 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17951 transitions. Word has length 168 [2021-11-05 19:41:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:06,739 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17951 transitions. [2021-11-05 19:41:06,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2021-11-05 19:41:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17951 transitions. [2021-11-05 19:41:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 19:41:06,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:06,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:06,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 19:41:06,747 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:41:06,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash -987314837, now seen corresponding path program 1 times [2021-11-05 19:41:06,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:06,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245329] [2021-11-05 19:41:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:06,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:41:07,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:07,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245329] [2021-11-05 19:41:07,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:07,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:07,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 19:41:07,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043503247] [2021-11-05 19:41:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:07,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:41:07,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:41:07,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:41:07,609 INFO L87 Difference]: Start difference. First operand 13023 states and 17951 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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) [2021-11-05 19:41:10,069 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 [] [2021-11-05 19:41:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:11,585 INFO L93 Difference]: Finished difference Result 37923 states and 52573 transitions. [2021-11-05 19:41:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 19:41:11,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-05 19:41:11,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:11,629 INFO L225 Difference]: With dead ends: 37923 [2021-11-05 19:41:11,629 INFO L226 Difference]: Without dead ends: 24957 [2021-11-05 19:41:11,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 654.78ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 19:41:11,652 INFO L933 BasicCegarLoop]: 2753 mSDtfsCounter, 2572 mSDsluCounter, 13400 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2897.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 16153 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.10ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2985.29ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:11,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2572 Valid, 16153 Invalid, 256 Unknown, 0 Unchecked, 17.10ms Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 1 Unknown, 0 Unchecked, 2985.29ms Time] [2021-11-05 19:41:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24957 states. [2021-11-05 19:41:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24957 to 13023. [2021-11-05 19:41:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13023 states, 13016 states have (on average 1.378918254456054) internal successors, (17948), 13022 states have internal predecessors, (17948), 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) [2021-11-05 19:41:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13023 states to 13023 states and 17948 transitions. [2021-11-05 19:41:12,025 INFO L78 Accepts]: Start accepts. Automaton has 13023 states and 17948 transitions. Word has length 168 [2021-11-05 19:41:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:12,025 INFO L470 AbstractCegarLoop]: Abstraction has 13023 states and 17948 transitions. [2021-11-05 19:41:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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) [2021-11-05 19:41:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13023 states and 17948 transitions. [2021-11-05 19:41:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-05 19:41:12,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:12,033 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:12,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 19:41:12,033 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:41:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1526404221, now seen corresponding path program 1 times [2021-11-05 19:41:12,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:12,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115640646] [2021-11-05 19:41:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:12,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-05 19:41:13,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:13,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115640646] [2021-11-05 19:41:13,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115640646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:13,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:41:13,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:41:13,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975020064] [2021-11-05 19:41:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:13,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:41:13,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:41:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:41:13,305 INFO L87 Difference]: Start difference. First operand 13023 states and 17948 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-05 19:41:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:13,750 INFO L93 Difference]: Finished difference Result 25993 states and 35849 transitions. [2021-11-05 19:41:13,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:41:13,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-05 19:41:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:13,774 INFO L225 Difference]: With dead ends: 25993 [2021-11-05 19:41:13,774 INFO L226 Difference]: Without dead ends: 13030 [2021-11-05 19:41:13,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:41:13,791 INFO L933 BasicCegarLoop]: 2678 mSDtfsCounter, 0 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.42ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:13,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5324 Invalid, 51 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 187.42ms Time] [2021-11-05 19:41:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2021-11-05 19:41:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 13030. [2021-11-05 19:41:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13030 states, 13023 states have (on average 1.3787145818935729) internal successors, (17955), 13029 states have internal predecessors, (17955), 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) [2021-11-05 19:41:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13030 states to 13030 states and 17955 transitions. [2021-11-05 19:41:14,107 INFO L78 Accepts]: Start accepts. Automaton has 13030 states and 17955 transitions. Word has length 174 [2021-11-05 19:41:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:14,107 INFO L470 AbstractCegarLoop]: Abstraction has 13030 states and 17955 transitions. [2021-11-05 19:41:14,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2021-11-05 19:41:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 13030 states and 17955 transitions. [2021-11-05 19:41:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-05 19:41:14,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:14,114 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:14,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 19:41:14,114 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:41:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash 749433849, now seen corresponding path program 1 times [2021-11-05 19:41:14,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:14,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973052961] [2021-11-05 19:41:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:14,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-05 19:41:15,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:15,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973052961] [2021-11-05 19:41:15,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973052961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:41:15,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164803896] [2021-11-05 19:41:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:15,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:41:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:41:15,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 19:41:15,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 19:41:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:16,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 6632 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 19:41:16,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:41:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-05 19:41:17,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:41:17,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164803896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:41:17,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:41:17,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 19:41:17,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940470985] [2021-11-05 19:41:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:41:17,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:41:17,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:41:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:41:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:41:17,242 INFO L87 Difference]: Start difference. First operand 13030 states and 17955 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2021-11-05 19:41:19,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:41:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:41:19,891 INFO L93 Difference]: Finished difference Result 25933 states and 35773 transitions. [2021-11-05 19:41:19,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:41:19,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 181 [2021-11-05 19:41:19,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:41:19,912 INFO L225 Difference]: With dead ends: 25933 [2021-11-05 19:41:19,912 INFO L226 Difference]: Without dead ends: 12983 [2021-11-05 19:41:19,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 237.30ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:41:19,929 INFO L933 BasicCegarLoop]: 2682 mSDtfsCounter, 5 mSDsluCounter, 8034 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2135.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10716 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2307.14ms IncrementalHoareTripleChecker+Time [2021-11-05 19:41:19,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10716 Invalid, 19 Unknown, 0 Unchecked, 5.03ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2307.14ms Time] [2021-11-05 19:41:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2021-11-05 19:41:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12949. [2021-11-05 19:41:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 12942 states have (on average 1.3806212331942513) internal successors, (17868), 12948 states have internal predecessors, (17868), 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) [2021-11-05 19:41:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 17868 transitions. [2021-11-05 19:41:20,223 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 17868 transitions. Word has length 181 [2021-11-05 19:41:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:41:20,223 INFO L470 AbstractCegarLoop]: Abstraction has 12949 states and 17868 transitions. [2021-11-05 19:41:20,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2021-11-05 19:41:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 17868 transitions. [2021-11-05 19:41:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-05 19:41:20,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:41:20,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:41:20,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 19:41:20,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-05 19:41:20,450 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:41:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:41:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2073928628, now seen corresponding path program 1 times [2021-11-05 19:41:20,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:41:20,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883025147] [2021-11-05 19:41:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:20,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:41:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-05 19:41:23,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:41:23,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883025147] [2021-11-05 19:41:23,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883025147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:41:23,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840090225] [2021-11-05 19:41:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:41:23,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:41:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:41:23,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 19:41:23,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 19:41:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:41:25,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 6741 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-05 19:41:25,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:41:26,355 INFO L354 Elim1Store]: treesize reduction 776, result has 5.0 percent of original size [2021-11-05 19:41:26,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 18 case distinctions, treesize of input 142 treesize of output 149 [2021-11-05 19:41:27,874 INFO L354 Elim1Store]: treesize reduction 124, result has 20.0 percent of original size [2021-11-05 19:41:27,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 60 [2021-11-05 19:41:29,056 INFO L354 Elim1Store]: treesize reduction 148, result has 27.1 percent of original size [2021-11-05 19:41:29,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 45 treesize of output 84 [2021-11-05 19:41:31,139 INFO L354 Elim1Store]: treesize reduction 214, result has 23.0 percent of original size [2021-11-05 19:41:31,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 74 treesize of output 120 [2021-11-05 19:41:34,516 INFO L354 Elim1Store]: treesize reduction 288, result has 20.2 percent of original size [2021-11-05 19:41:34,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 34 case distinctions, treesize of input 107 treesize of output 160 [2021-11-05 19:41:40,616 INFO L354 Elim1Store]: treesize reduction 370, result has 18.1 percent of original size [2021-11-05 19:41:40,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 144 treesize of output 204 [2021-11-05 19:41:50,965 INFO L354 Elim1Store]: treesize reduction 460, result has 16.5 percent of original size [2021-11-05 19:41:50,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 185 treesize of output 252 [2021-11-05 19:42:08,054 INFO L354 Elim1Store]: treesize reduction 558, result has 15.2 percent of original size [2021-11-05 19:42:08,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 10 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 67 case distinctions, treesize of input 230 treesize of output 304 [2021-11-05 19:42:35,770 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-05 19:42:35,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-05 19:42:35,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:42:35,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-05 19:42:35,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137139916] [2021-11-05 19:42:35,774 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-05 19:42:35,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:42:35,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:42:35,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:42:35,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=53, Unknown=4, NotChecked=0, Total=90 [2021-11-05 19:42:35,779 INFO L87 Difference]: Start difference. First operand 12949 states and 17868 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:42:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:42:35,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 12551.22ms TimeCoverageRelationStatistics Valid=33, Invalid=53, Unknown=4, NotChecked=0, Total=90 [2021-11-05 19:42:35,781 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:42:35,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 1 Unknown, 0 Unchecked, 0.12ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:42:35,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-05 19:42:35,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 19:42:35,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-05 19:42:35,996 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@bfaf61c at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-05 19:42:35,998 INFO L158 Benchmark]: Toolchain (without parser) took 146585.01ms. Allocated memory was 54.5MB in the beginning and 2.2GB in the end (delta: 2.2GB). Free memory was 31.0MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-11-05 19:42:35,998 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-05 19:42:35,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1973.72ms. Allocated memory was 54.5MB in the beginning and 138.4MB in the end (delta: 83.9MB). Free memory was 30.9MB in the beginning and 61.5MB in the end (delta: -30.6MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2021-11-05 19:42:35,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 497.77ms. Allocated memory is still 138.4MB. Free memory was 61.5MB in the beginning and 37.1MB in the end (delta: 24.4MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2021-11-05 19:42:35,999 INFO L158 Benchmark]: Boogie Preprocessor took 430.42ms. Allocated memory was 138.4MB in the beginning and 276.8MB in the end (delta: 138.4MB). Free memory was 37.1MB in the beginning and 147.1MB in the end (delta: -110.1MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2021-11-05 19:42:35,999 INFO L158 Benchmark]: RCFGBuilder took 30383.26ms. Allocated memory was 276.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 147.1MB in the beginning and 704.4MB in the end (delta: -557.3MB). Peak memory consumption was 940.3MB. Max. memory is 16.1GB. [2021-11-05 19:42:35,999 INFO L158 Benchmark]: TraceAbstraction took 113292.81ms. Allocated memory was 1.5GB in the beginning and 2.2GB in the end (delta: 681.6MB). Free memory was 703.3MB in the beginning and 1.1GB in the end (delta: -399.5MB). Peak memory consumption was 282.5MB. Max. memory is 16.1GB. [2021-11-05 19:42:36,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 39.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1973.72ms. Allocated memory was 54.5MB in the beginning and 138.4MB in the end (delta: 83.9MB). Free memory was 30.9MB in the beginning and 61.5MB in the end (delta: -30.6MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 497.77ms. Allocated memory is still 138.4MB. Free memory was 61.5MB in the beginning and 37.1MB in the end (delta: 24.4MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 430.42ms. Allocated memory was 138.4MB in the beginning and 276.8MB in the end (delta: 138.4MB). Free memory was 37.1MB in the beginning and 147.1MB in the end (delta: -110.1MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * RCFGBuilder took 30383.26ms. Allocated memory was 276.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 147.1MB in the beginning and 704.4MB in the end (delta: -557.3MB). Peak memory consumption was 940.3MB. Max. memory is 16.1GB. * TraceAbstraction took 113292.81ms. Allocated memory was 1.5GB in the beginning and 2.2GB in the end (delta: 681.6MB). Free memory was 703.3MB in the beginning and 1.1GB in the end (delta: -399.5MB). Peak memory consumption was 282.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@bfaf61c de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@bfaf61c: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:42:37,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:42:37,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:42:37,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:42:37,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:42:37,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:42:37,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:42:37,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:42:37,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:42:37,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:42:37,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:42:37,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:42:37,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:42:37,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:42:37,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:42:37,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:42:37,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:42:37,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:42:37,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:42:37,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:42:37,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:42:37,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:42:37,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:42:37,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:42:37,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:42:37,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:42:37,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:42:37,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:42:37,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:42:37,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:42:37,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:42:37,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:42:37,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:42:37,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:42:37,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:42:37,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:42:37,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:42:37,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:42:37,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:42:37,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:42:37,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:42:37,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-05 19:42:37,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:42:37,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:42:37,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:42:37,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:42:37,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:42:37,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:42:37,640 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:42:37,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:42:37,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:42:37,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:42:37,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:42:37,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:42:37,641 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-05 19:42:37,642 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-05 19:42:37,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:42:37,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:42:37,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:42:37,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:42:37,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:42:37,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:42:37,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:42:37,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:42:37,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:42:37,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:42:37,643 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-05 19:42:37,643 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-05 19:42:37,643 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:42:37,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:42:37,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:42:37,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:42:37,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-05 19:42:37,644 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 234112184b071eb42f340136dfce6e1a552d788d086baea007a05a3140f2d157 [2021-11-05 19:42:37,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:42:37,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:42:37,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:42:37,974 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:42:37,974 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:42:37,976 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 19:42:38,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75a6ec12/a17713006a0e45ba82af01c27334caa0/FLAG44e265e00 [2021-11-05 19:42:38,625 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:42:38,626 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 19:42:38,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75a6ec12/a17713006a0e45ba82af01c27334caa0/FLAG44e265e00 [2021-11-05 19:42:39,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75a6ec12/a17713006a0e45ba82af01c27334caa0 [2021-11-05 19:42:39,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:42:39,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:42:39,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:42:39,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:42:39,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:42:39,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:42:39" (1/1) ... [2021-11-05 19:42:39,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccbf226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:39, skipping insertion in model container [2021-11-05 19:42:39,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:42:39" (1/1) ... [2021-11-05 19:42:39,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:42:39,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:42:40,307 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-05 19:42:40,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:42:40,415 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:42:40,719 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[254896,254909] [2021-11-05 19:42:40,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:42:40,930 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:42:40,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40 WrapperNode [2021-11-05 19:42:40,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:42:40,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:42:40,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:42:40,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:42:40,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:42:41,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:42:41,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:42:41,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:42:41,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:42:41,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:42:41,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:42:41,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:42:41,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (1/1) ... [2021-11-05 19:42:41,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:42:41,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:42:41,880 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) [2021-11-05 19:42:41,895 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 [2021-11-05 19:42:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-05 19:42:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-05 19:42:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-05 19:42:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 19:42:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-05 19:42:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-05 19:42:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:42:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:43:53,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:43:53,538 INFO L299 CfgBuilder]: Removed 1993 assume(true) statements. [2021-11-05 19:43:53,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:43:53 BoogieIcfgContainer [2021-11-05 19:43:53,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:43:53,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:43:53,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:43:53,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:43:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:42:39" (1/3) ... [2021-11-05 19:43:53,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cbc476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:43:53, skipping insertion in model container [2021-11-05 19:43:53,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:42:40" (2/3) ... [2021-11-05 19:43:53,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42cbc476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:43:53, skipping insertion in model container [2021-11-05 19:43:53,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:43:53" (3/3) ... [2021-11-05 19:43:53,547 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-05 19:43:53,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:43:53,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-05 19:43:53,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:43:53,598 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 [2021-11-05 19:43:53,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-05 19:43:53,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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) [2021-11-05 19:43:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 19:43:53,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:43:53,635 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] [2021-11-05 19:43:53,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:43:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:43:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1062845019, now seen corresponding path program 1 times [2021-11-05 19:43:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:43:53,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938521283] [2021-11-05 19:43:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:43:53,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:43:53,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:43:53,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:43:53,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-05 19:43:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:43:58,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-05 19:43:58,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:43:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:43:59,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:44:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:44:01,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:44:01,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938521283] [2021-11-05 19:44:01,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938521283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:44:01,205 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:44:01,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-05 19:44:01,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236714771] [2021-11-05 19:44:01,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:44:01,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:44:01,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:44:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:44:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:44:01,231 INFO L87 Difference]: Start difference. First operand has 2026 states, 2006 states have (on average 1.4087736789631107) internal successors, (2826), 2025 states have internal predecessors, (2826), 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 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-11-05 19:44:01,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:44:01,301 INFO L93 Difference]: Finished difference Result 4048 states and 5647 transitions. [2021-11-05 19:44:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:44:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2021-11-05 19:44:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:44:01,322 INFO L225 Difference]: With dead ends: 4048 [2021-11-05 19:44:01,322 INFO L226 Difference]: Without dead ends: 2009 [2021-11-05 19:44:01,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.10ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:44:01,336 INFO L933 BasicCegarLoop]: 2740 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:44:01,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:44:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-05 19:44:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 2009. [2021-11-05 19:44:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1990 states have (on average 1.3633165829145728) internal successors, (2713), 2008 states have internal predecessors, (2713), 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) [2021-11-05 19:44:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2713 transitions. [2021-11-05 19:44:01,429 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2713 transitions. Word has length 103 [2021-11-05 19:44:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:44:01,429 INFO L470 AbstractCegarLoop]: Abstraction has 2009 states and 2713 transitions. [2021-11-05 19:44:01,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-11-05 19:44:01,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2713 transitions. [2021-11-05 19:44:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 19:44:01,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:44:01,432 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] [2021-11-05 19:44:01,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-05 19:44:01,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:44:01,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:44:01,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:44:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash 666457411, now seen corresponding path program 1 times [2021-11-05 19:44:01,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:44:01,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273273650] [2021-11-05 19:44:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:44:01,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:44:01,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:44:01,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:44:01,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-05 19:44:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:44:06,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:44:06,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:44:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:44:07,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:44:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:44:08,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:44:08,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273273650] [2021-11-05 19:44:08,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273273650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:44:08,274 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:44:08,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:44:08,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684043551] [2021-11-05 19:44:08,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:44:08,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:44:08,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:44:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:44:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:44:08,281 INFO L87 Difference]: Start difference. First operand 2009 states and 2713 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-05 19:44:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:44:09,535 INFO L93 Difference]: Finished difference Result 3978 states and 5405 transitions. [2021-11-05 19:44:09,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:44:09,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 103 [2021-11-05 19:44:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:44:09,542 INFO L225 Difference]: With dead ends: 3978 [2021-11-05 19:44:09,542 INFO L226 Difference]: Without dead ends: 2029 [2021-11-05 19:44:09,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 229.98ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:44:09,551 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 0 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1088.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.57ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1180.72ms IncrementalHoareTripleChecker+Time [2021-11-05 19:44:09,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5374 Invalid, 95 Unknown, 0 Unchecked, 11.57ms Time], IncrementalHoareTripleChecker [43 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 1180.72ms Time] [2021-11-05 19:44:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-11-05 19:44:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2029. [2021-11-05 19:44:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 2010 states have (on average 1.3597014925373134) internal successors, (2733), 2028 states have internal predecessors, (2733), 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) [2021-11-05 19:44:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2733 transitions. [2021-11-05 19:44:09,587 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2733 transitions. Word has length 103 [2021-11-05 19:44:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:44:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2733 transitions. [2021-11-05 19:44:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-05 19:44:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2733 transitions. [2021-11-05 19:44:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 19:44:09,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:44:09,593 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:44:09,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-05 19:44:09,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:44:09,806 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:44:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:44:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash 376382417, now seen corresponding path program 1 times [2021-11-05 19:44:09,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:44:09,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830119036] [2021-11-05 19:44:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:44:09,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:44:09,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:44:09,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:44:09,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-05 19:44:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:44:14,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 3482 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 19:44:14,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:44:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 19:44:16,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:44:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-05 19:44:18,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:44:18,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830119036] [2021-11-05 19:44:18,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830119036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:44:18,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 19:44:18,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-05 19:44:18,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089478839] [2021-11-05 19:44:18,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 19:44:18,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:44:18,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:44:18,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:44:18,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:44:18,142 INFO L87 Difference]: Start difference. First operand 2029 states and 2733 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2021-11-05 19:44:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:44:24,410 INFO L93 Difference]: Finished difference Result 4022 states and 5455 transitions. [2021-11-05 19:44:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:44:24,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 118 [2021-11-05 19:44:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:44:24,417 INFO L225 Difference]: With dead ends: 4022 [2021-11-05 19:44:24,417 INFO L226 Difference]: Without dead ends: 2055 [2021-11-05 19:44:24,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2306.01ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:44:24,424 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 0 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5007.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10722 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.37ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5255.07ms IncrementalHoareTripleChecker+Time [2021-11-05 19:44:24,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10722 Invalid, 299 Unknown, 0 Unchecked, 8.37ms Time], IncrementalHoareTripleChecker [135 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 5255.07ms Time] [2021-11-05 19:44:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2021-11-05 19:44:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2055. [2021-11-05 19:44:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2036 states have (on average 1.3551080550098231) internal successors, (2759), 2054 states have internal predecessors, (2759), 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) [2021-11-05 19:44:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2759 transitions. [2021-11-05 19:44:24,453 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2759 transitions. Word has length 118 [2021-11-05 19:44:24,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:44:24,454 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 2759 transitions. [2021-11-05 19:44:24,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2021-11-05 19:44:24,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2759 transitions. [2021-11-05 19:44:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-05 19:44:24,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:44:24,458 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:44:24,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-05 19:44:24,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:44:24,683 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:44:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:44:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1432068527, now seen corresponding path program 2 times [2021-11-05 19:44:24,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:44:24,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096332555] [2021-11-05 19:44:24,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:44:24,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:44:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:44:24,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:44:24,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-05 19:44:29,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:44:29,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:44:29,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 3407 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:44:29,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:44:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-05 19:44:29,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:44:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-05 19:44:30,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:44:30,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096332555] [2021-11-05 19:44:30,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096332555] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:44:30,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:44:30,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-05 19:44:30,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716923440] [2021-11-05 19:44:30,351 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:44:30,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:44:30,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:44:30,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:44:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:44:30,352 INFO L87 Difference]: Start difference. First operand 2055 states and 2759 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-11-05 19:44:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:44:31,772 INFO L93 Difference]: Finished difference Result 5168 states and 7056 transitions. [2021-11-05 19:44:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:44:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 134 [2021-11-05 19:44:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:44:31,784 INFO L225 Difference]: With dead ends: 5168 [2021-11-05 19:44:31,785 INFO L226 Difference]: Without dead ends: 3228 [2021-11-05 19:44:31,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:44:31,792 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 1733 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1207.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1337.99ms IncrementalHoareTripleChecker+Time [2021-11-05 19:44:31,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1733 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 20.97ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1337.99ms Time] [2021-11-05 19:44:31,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-11-05 19:44:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 3217. [2021-11-05 19:44:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3217 states, 3198 states have (on average 1.3799249530956847) internal successors, (4413), 3216 states have internal predecessors, (4413), 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) [2021-11-05 19:44:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 4413 transitions. [2021-11-05 19:44:31,849 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 4413 transitions. Word has length 134 [2021-11-05 19:44:31,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:44:31,852 INFO L470 AbstractCegarLoop]: Abstraction has 3217 states and 4413 transitions. [2021-11-05 19:44:31,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-11-05 19:44:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 4413 transitions. [2021-11-05 19:44:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 19:44:31,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:44:31,855 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:44:31,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-05 19:44:32,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:44:32,083 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:44:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:44:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -841563815, now seen corresponding path program 1 times [2021-11-05 19:44:32,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:44:32,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195056052] [2021-11-05 19:44:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:44:32,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:44:32,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:44:32,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:44:32,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-05 19:44:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:44:37,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 3575 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 19:44:37,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:44:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:44:39,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:44:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-05 19:44:42,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:44:42,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195056052] [2021-11-05 19:44:42,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195056052] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:44:42,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 19:44:42,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-05 19:44:42,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530448309] [2021-11-05 19:44:42,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 19:44:42,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 19:44:42,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:44:42,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 19:44:42,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:44:42,052 INFO L87 Difference]: Start difference. First operand 3217 states and 4413 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 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) [2021-11-05 19:45:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:45:00,181 INFO L93 Difference]: Finished difference Result 6378 states and 8782 transitions. [2021-11-05 19:45:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 19:45:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 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 135 [2021-11-05 19:45:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:45:00,192 INFO L225 Difference]: With dead ends: 6378 [2021-11-05 19:45:00,192 INFO L226 Difference]: Without dead ends: 3231 [2021-11-05 19:45:00,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3969.76ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-05 19:45:00,197 INFO L933 BasicCegarLoop]: 2700 mSDtfsCounter, 0 mSDsluCounter, 10696 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16048.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13396 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16353.63ms IncrementalHoareTripleChecker+Time [2021-11-05 19:45:00,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13396 Invalid, 364 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [132 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 16353.63ms Time] [2021-11-05 19:45:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-11-05 19:45:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3231. [2021-11-05 19:45:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3212 states have (on average 1.37826899128269) internal successors, (4427), 3230 states have internal predecessors, (4427), 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) [2021-11-05 19:45:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4427 transitions. [2021-11-05 19:45:00,248 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4427 transitions. Word has length 135 [2021-11-05 19:45:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:45:00,249 INFO L470 AbstractCegarLoop]: Abstraction has 3231 states and 4427 transitions. [2021-11-05 19:45:00,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 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) [2021-11-05 19:45:00,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4427 transitions. [2021-11-05 19:45:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 19:45:00,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:45:00,251 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:45:00,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-05 19:45:00,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:45:00,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:45:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:45:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash 407361319, now seen corresponding path program 2 times [2021-11-05 19:45:00,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:45:00,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944834872] [2021-11-05 19:45:00,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:45:00,468 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:45:00,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:45:00,468 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:45:00,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-05 19:45:04,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:45:04,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:45:04,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 3420 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:45:04,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:45:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:05,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:45:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:06,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:45:06,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944834872] [2021-11-05 19:45:06,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944834872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:45:06,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:45:06,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-05 19:45:06,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016886766] [2021-11-05 19:45:06,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:45:06,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:45:06,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:45:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:45:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:45:06,159 INFO L87 Difference]: Start difference. First operand 3231 states and 4427 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-05 19:45:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:45:07,359 INFO L93 Difference]: Finished difference Result 8999 states and 12413 transitions. [2021-11-05 19:45:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:45:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 140 [2021-11-05 19:45:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:45:07,374 INFO L225 Difference]: With dead ends: 8999 [2021-11-05 19:45:07,374 INFO L226 Difference]: Without dead ends: 5888 [2021-11-05 19:45:07,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:45:07,379 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 2395 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 991.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1130.74ms IncrementalHoareTripleChecker+Time [2021-11-05 19:45:07,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2395 Valid, 5312 Invalid, 23 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1130.74ms Time] [2021-11-05 19:45:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-11-05 19:45:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5828. [2021-11-05 19:45:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5809 states have (on average 1.3887071785160958) internal successors, (8067), 5827 states have internal predecessors, (8067), 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) [2021-11-05 19:45:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8067 transitions. [2021-11-05 19:45:07,484 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 8067 transitions. Word has length 140 [2021-11-05 19:45:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:45:07,485 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 8067 transitions. [2021-11-05 19:45:07,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-05 19:45:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 8067 transitions. [2021-11-05 19:45:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 19:45:07,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:45:07,487 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:45:07,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-05 19:45:07,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:45:07,699 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:45:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:45:07,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1594206989, now seen corresponding path program 1 times [2021-11-05 19:45:07,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:45:07,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893106524] [2021-11-05 19:45:07,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:45:07,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:45:07,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:45:07,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:45:07,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-05 19:45:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:45:15,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 3608 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:45:15,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:45:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:15,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:45:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:16,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:45:16,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893106524] [2021-11-05 19:45:16,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893106524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:45:16,399 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:45:16,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-05 19:45:16,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485967177] [2021-11-05 19:45:16,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:45:16,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:45:16,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:45:16,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:45:16,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:45:16,400 INFO L87 Difference]: Start difference. First operand 5828 states and 8067 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-05 19:45:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:45:19,704 INFO L93 Difference]: Finished difference Result 13826 states and 19040 transitions. [2021-11-05 19:45:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:45:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 144 [2021-11-05 19:45:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:45:19,727 INFO L225 Difference]: With dead ends: 13826 [2021-11-05 19:45:19,727 INFO L226 Difference]: Without dead ends: 8118 [2021-11-05 19:45:19,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:45:19,735 INFO L933 BasicCegarLoop]: 3015 mSDtfsCounter, 1481 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2963.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 5552 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3190.50ms IncrementalHoareTripleChecker+Time [2021-11-05 19:45:19,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 5552 Invalid, 86 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 3190.50ms Time] [2021-11-05 19:45:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2021-11-05 19:45:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8086. [2021-11-05 19:45:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8067 states have (on average 1.3736209247551754) internal successors, (11081), 8085 states have internal predecessors, (11081), 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) [2021-11-05 19:45:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11081 transitions. [2021-11-05 19:45:19,886 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11081 transitions. Word has length 144 [2021-11-05 19:45:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:45:19,887 INFO L470 AbstractCegarLoop]: Abstraction has 8086 states and 11081 transitions. [2021-11-05 19:45:19,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-05 19:45:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11081 transitions. [2021-11-05 19:45:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-05 19:45:19,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:45:19,890 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-05 19:45:19,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-05 19:45:20,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:45:20,115 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:45:20,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:45:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1436017854, now seen corresponding path program 1 times [2021-11-05 19:45:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:45:20,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120465364] [2021-11-05 19:45:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:45:20,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:45:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:45:20,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:45:20,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-05 19:45:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:45:27,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-05 19:45:27,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:45:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:29,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:45:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:31,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:45:31,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120465364] [2021-11-05 19:45:31,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120465364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:45:31,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:45:31,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-05 19:45:31,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694362686] [2021-11-05 19:45:31,237 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:45:31,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 19:45:31,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:45:31,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 19:45:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:45:31,238 INFO L87 Difference]: Start difference. First operand 8086 states and 11081 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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) [2021-11-05 19:45:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:45:44,147 INFO L93 Difference]: Finished difference Result 60454 states and 83870 transitions. [2021-11-05 19:45:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 19:45:44,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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 173 [2021-11-05 19:45:44,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:45:44,286 INFO L225 Difference]: With dead ends: 60454 [2021-11-05 19:45:44,286 INFO L226 Difference]: Without dead ends: 52488 [2021-11-05 19:45:44,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 341 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3928.38ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-05 19:45:44,315 INFO L933 BasicCegarLoop]: 2783 mSDtfsCounter, 24512 mSDsluCounter, 41205 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9069.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24512 SdHoareTripleChecker+Valid, 43988 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.70ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9334.96ms IncrementalHoareTripleChecker+Time [2021-11-05 19:45:44,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24512 Valid, 43988 Invalid, 609 Unknown, 0 Unchecked, 47.70ms Time], IncrementalHoareTripleChecker [63 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 9334.96ms Time] [2021-11-05 19:45:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52488 states. [2021-11-05 19:45:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52488 to 8126. [2021-11-05 19:45:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8126 states, 8107 states have (on average 1.3717774762550883) internal successors, (11121), 8125 states have internal predecessors, (11121), 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) [2021-11-05 19:45:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8126 states to 8126 states and 11121 transitions. [2021-11-05 19:45:44,881 INFO L78 Accepts]: Start accepts. Automaton has 8126 states and 11121 transitions. Word has length 173 [2021-11-05 19:45:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:45:44,882 INFO L470 AbstractCegarLoop]: Abstraction has 8126 states and 11121 transitions. [2021-11-05 19:45:44,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 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) [2021-11-05 19:45:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 8126 states and 11121 transitions. [2021-11-05 19:45:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-05 19:45:44,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:45:44,884 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-05 19:45:44,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-05 19:45:45,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:45:45,101 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:45:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:45:45,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1041651068, now seen corresponding path program 1 times [2021-11-05 19:45:45,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:45:45,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472156140] [2021-11-05 19:45:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:45:45,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:45:45,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:45:45,108 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:45:45,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-05 19:45:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:45:52,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-05 19:45:52,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:45:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:54,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:45:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:45:57,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:45:57,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472156140] [2021-11-05 19:45:57,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472156140] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:45:57,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:45:57,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-05 19:45:57,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733180298] [2021-11-05 19:45:57,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:45:57,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 19:45:57,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:45:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 19:45:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-05 19:45:57,199 INFO L87 Difference]: Start difference. First operand 8126 states and 11121 transitions. Second operand has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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) [2021-11-05 19:46:02,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:46:04,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:46:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:46:23,794 INFO L93 Difference]: Finished difference Result 68293 states and 94604 transitions. [2021-11-05 19:46:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 19:46:23,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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 173 [2021-11-05 19:46:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:46:23,904 INFO L225 Difference]: With dead ends: 68293 [2021-11-05 19:46:23,904 INFO L226 Difference]: Without dead ends: 60287 [2021-11-05 19:46:23,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 7786.65ms TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-11-05 19:46:23,928 INFO L933 BasicCegarLoop]: 3995 mSDtfsCounter, 45176 mSDsluCounter, 36649 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 61 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18061.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45176 SdHoareTripleChecker+Valid, 40644 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.01ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18805.32ms IncrementalHoareTripleChecker+Time [2021-11-05 19:46:23,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45176 Valid, 40644 Invalid, 773 Unknown, 0 Unchecked, 59.01ms Time], IncrementalHoareTripleChecker [61 Valid, 710 Invalid, 2 Unknown, 0 Unchecked, 18805.32ms Time] [2021-11-05 19:46:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60287 states. [2021-11-05 19:46:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60287 to 8142. [2021-11-05 19:46:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8142 states, 8123 states have (on average 1.3710451803520867) internal successors, (11137), 8141 states have internal predecessors, (11137), 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) [2021-11-05 19:46:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8142 states to 8142 states and 11137 transitions. [2021-11-05 19:46:24,533 INFO L78 Accepts]: Start accepts. Automaton has 8142 states and 11137 transitions. Word has length 173 [2021-11-05 19:46:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:46:24,534 INFO L470 AbstractCegarLoop]: Abstraction has 8142 states and 11137 transitions. [2021-11-05 19:46:24,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.75) internal successors, (153), 12 states have internal predecessors, (153), 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) [2021-11-05 19:46:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8142 states and 11137 transitions. [2021-11-05 19:46:24,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-05 19:46:24,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:46:24,536 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:46:24,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-05 19:46:24,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:46:24,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:46:24,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:46:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2108156465, now seen corresponding path program 1 times [2021-11-05 19:46:24,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:46:24,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417573195] [2021-11-05 19:46:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:46:24,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:46:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:46:24,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:46:24,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-05 19:46:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:46:32,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 3732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:46:32,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:46:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:46:33,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:46:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:46:34,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:46:34,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417573195] [2021-11-05 19:46:34,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417573195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:46:34,529 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:46:34,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 19:46:34,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094823754] [2021-11-05 19:46:34,530 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:46:34,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:46:34,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:46:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:46:34,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:46:34,530 INFO L87 Difference]: Start difference. First operand 8142 states and 11137 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2021-11-05 19:46:37,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:46:39,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:46:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:46:40,829 INFO L93 Difference]: Finished difference Result 24158 states and 33117 transitions. [2021-11-05 19:46:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:46:40,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 175 [2021-11-05 19:46:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:46:40,852 INFO L225 Difference]: With dead ends: 24158 [2021-11-05 19:46:40,852 INFO L226 Difference]: Without dead ends: 16000 [2021-11-05 19:46:40,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 769.27ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:46:40,863 INFO L933 BasicCegarLoop]: 4347 mSDtfsCounter, 2599 mSDsluCounter, 15725 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5055.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 20072 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5182.74ms IncrementalHoareTripleChecker+Time [2021-11-05 19:46:40,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 20072 Invalid, 35 Unknown, 0 Unchecked, 10.39ms Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 5182.74ms Time] [2021-11-05 19:46:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16000 states. [2021-11-05 19:46:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16000 to 8086. [2021-11-05 19:46:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8086 states, 8067 states have (on average 1.370645841080947) internal successors, (11057), 8085 states have internal predecessors, (11057), 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) [2021-11-05 19:46:41,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8086 states to 8086 states and 11057 transitions. [2021-11-05 19:46:41,280 INFO L78 Accepts]: Start accepts. Automaton has 8086 states and 11057 transitions. Word has length 175 [2021-11-05 19:46:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:46:41,280 INFO L470 AbstractCegarLoop]: Abstraction has 8086 states and 11057 transitions. [2021-11-05 19:46:41,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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) [2021-11-05 19:46:41,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8086 states and 11057 transitions. [2021-11-05 19:46:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-05 19:46:41,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:46:41,283 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:46:41,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-05 19:46:41,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:46:41,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:46:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:46:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash 449540708, now seen corresponding path program 1 times [2021-11-05 19:46:41,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:46:41,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628226108] [2021-11-05 19:46:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:46:41,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:46:41,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:46:41,518 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:46:41,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-05 19:46:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:46:49,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 3817 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:46:49,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:46:50,378 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:46:50,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:46:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:46:51,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:46:51,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628226108] [2021-11-05 19:46:51,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628226108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:46:51,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:46:51,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-05 19:46:51,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293193623] [2021-11-05 19:46:51,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:46:51,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:46:51,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:46:51,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:46:51,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:46:51,013 INFO L87 Difference]: Start difference. First operand 8086 states and 11057 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2021-11-05 19:46:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:46:52,742 INFO L93 Difference]: Finished difference Result 23804 states and 32684 transitions. [2021-11-05 19:46:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:46:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 179 [2021-11-05 19:46:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:46:52,766 INFO L225 Difference]: With dead ends: 23804 [2021-11-05 19:46:52,767 INFO L226 Difference]: Without dead ends: 15838 [2021-11-05 19:46:52,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 316.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:46:52,779 INFO L933 BasicCegarLoop]: 4329 mSDtfsCounter, 6254 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 670.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6254 SdHoareTripleChecker+Valid, 7032 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 785.29ms IncrementalHoareTripleChecker+Time [2021-11-05 19:46:52,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6254 Valid, 7032 Invalid, 14 Unknown, 0 Unchecked, 7.05ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 785.29ms Time] [2021-11-05 19:46:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15838 states. [2021-11-05 19:46:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15838 to 7930. [2021-11-05 19:46:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 7911 states have (on average 1.3758058399696624) internal successors, (10884), 7929 states have internal predecessors, (10884), 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) [2021-11-05 19:46:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 10884 transitions. [2021-11-05 19:46:53,298 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 10884 transitions. Word has length 179 [2021-11-05 19:46:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:46:53,298 INFO L470 AbstractCegarLoop]: Abstraction has 7930 states and 10884 transitions. [2021-11-05 19:46:53,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2021-11-05 19:46:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 10884 transitions. [2021-11-05 19:46:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-05 19:46:53,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:46:53,300 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:46:53,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-05 19:46:53,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:46:53,528 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:46:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:46:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1059430387, now seen corresponding path program 1 times [2021-11-05 19:46:53,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:46:53,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545114147] [2021-11-05 19:46:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:46:53,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:46:53,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:46:53,534 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:46:53,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-05 19:47:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:01,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 3843 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 19:47:01,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:47:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:47:02,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:47:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:47:03,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:47:03,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545114147] [2021-11-05 19:47:03,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545114147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:03,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:03,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-05 19:47:03,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555775363] [2021-11-05 19:47:03,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:03,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:47:03,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:47:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:47:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:47:03,801 INFO L87 Difference]: Start difference. First operand 7930 states and 10884 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-05 19:47:06,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:47:07,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:07,434 INFO L93 Difference]: Finished difference Result 15723 states and 21622 transitions. [2021-11-05 19:47:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:47:07,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 185 [2021-11-05 19:47:07,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:07,449 INFO L225 Difference]: With dead ends: 15723 [2021-11-05 19:47:07,449 INFO L226 Difference]: Without dead ends: 7905 [2021-11-05 19:47:07,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 696.90ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:47:07,460 INFO L933 BasicCegarLoop]: 2706 mSDtfsCounter, 5 mSDsluCounter, 8106 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2731.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10812 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2849.12ms IncrementalHoareTripleChecker+Time [2021-11-05 19:47:07,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10812 Invalid, 20 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2849.12ms Time] [2021-11-05 19:47:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2021-11-05 19:47:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 7888. [2021-11-05 19:47:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7888 states, 7869 states have (on average 1.377303342229) internal successors, (10838), 7887 states have internal predecessors, (10838), 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) [2021-11-05 19:47:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7888 states to 7888 states and 10838 transitions. [2021-11-05 19:47:07,921 INFO L78 Accepts]: Start accepts. Automaton has 7888 states and 10838 transitions. Word has length 185 [2021-11-05 19:47:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:47:07,922 INFO L470 AbstractCegarLoop]: Abstraction has 7888 states and 10838 transitions. [2021-11-05 19:47:07,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-05 19:47:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7888 states and 10838 transitions. [2021-11-05 19:47:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-05 19:47:07,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:07,924 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-05 19:47:08,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-05 19:47:08,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:47:08,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:47:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash 195650102, now seen corresponding path program 1 times [2021-11-05 19:47:08,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:47:08,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50208321] [2021-11-05 19:47:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:08,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:47:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:47:08,137 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:47:08,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-05 19:47:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:16,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 3884 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:47:16,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:47:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:47:18,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:47:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:47:19,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:47:19,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50208321] [2021-11-05 19:47:19,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50208321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:19,663 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:19,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:47:19,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298899695] [2021-11-05 19:47:19,664 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:19,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:47:19,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:47:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:47:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:47:19,665 INFO L87 Difference]: Start difference. First operand 7888 states and 10838 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2021-11-05 19:47:22,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:47:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:24,328 INFO L93 Difference]: Finished difference Result 20576 states and 28626 transitions. [2021-11-05 19:47:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:47:24,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 191 [2021-11-05 19:47:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:24,350 INFO L225 Difference]: With dead ends: 20576 [2021-11-05 19:47:24,350 INFO L226 Difference]: Without dead ends: 12808 [2021-11-05 19:47:24,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 168.90ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:47:24,362 INFO L933 BasicCegarLoop]: 2805 mSDtfsCounter, 3968 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3841.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 6838 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.92ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4006.72ms IncrementalHoareTripleChecker+Time [2021-11-05 19:47:24,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3968 Valid, 6838 Invalid, 60 Unknown, 0 Unchecked, 5.92ms Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 4006.72ms Time] [2021-11-05 19:47:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12808 states. [2021-11-05 19:47:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12808 to 12752. [2021-11-05 19:47:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12752 states, 12733 states have (on average 1.400298437131862) internal successors, (17830), 12751 states have internal predecessors, (17830), 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) [2021-11-05 19:47:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12752 states to 12752 states and 17830 transitions. [2021-11-05 19:47:25,083 INFO L78 Accepts]: Start accepts. Automaton has 12752 states and 17830 transitions. Word has length 191 [2021-11-05 19:47:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:47:25,083 INFO L470 AbstractCegarLoop]: Abstraction has 12752 states and 17830 transitions. [2021-11-05 19:47:25,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2021-11-05 19:47:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 12752 states and 17830 transitions. [2021-11-05 19:47:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-05 19:47:25,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:25,086 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:47:25,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-05 19:47:25,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:47:25,288 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:47:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1921893868, now seen corresponding path program 1 times [2021-11-05 19:47:25,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:47:25,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536762526] [2021-11-05 19:47:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:25,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:47:25,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:47:25,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:47:25,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-05 19:47:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:33,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3897 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:47:33,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:47:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-05 19:47:40,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:47:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-05 19:47:48,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:47:48,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536762526] [2021-11-05 19:47:48,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536762526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:47:48,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:47:48,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-05 19:47:48,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280996096] [2021-11-05 19:47:48,078 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:47:48,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:47:48,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:47:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:47:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:47:48,079 INFO L87 Difference]: Start difference. First operand 12752 states and 17830 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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) [2021-11-05 19:47:49,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:47:49,627 INFO L93 Difference]: Finished difference Result 12752 states and 17830 transitions. [2021-11-05 19:47:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:47:49,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 192 [2021-11-05 19:47:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:47:49,640 INFO L225 Difference]: With dead ends: 12752 [2021-11-05 19:47:49,640 INFO L226 Difference]: Without dead ends: 12728 [2021-11-05 19:47:49,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:47:49,642 INFO L933 BasicCegarLoop]: 2668 mSDtfsCounter, 2314 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 880.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.04ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 929.53ms IncrementalHoareTripleChecker+Time [2021-11-05 19:47:49,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2314 Valid, 2827 Invalid, 74 Unknown, 0 Unchecked, 3.04ms Time], IncrementalHoareTripleChecker [32 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 929.53ms Time] [2021-11-05 19:47:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12728 states. [2021-11-05 19:47:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12728 to 12728. [2021-11-05 19:47:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12728 states, 12721 states have (on average 1.3956449964625421) internal successors, (17754), 12727 states have internal predecessors, (17754), 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) [2021-11-05 19:47:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12728 states to 12728 states and 17754 transitions. [2021-11-05 19:47:50,323 INFO L78 Accepts]: Start accepts. Automaton has 12728 states and 17754 transitions. Word has length 192 [2021-11-05 19:47:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:47:50,323 INFO L470 AbstractCegarLoop]: Abstraction has 12728 states and 17754 transitions. [2021-11-05 19:47:50,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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) [2021-11-05 19:47:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12728 states and 17754 transitions. [2021-11-05 19:47:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-05 19:47:50,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:47:50,327 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:47:50,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-05 19:47:50,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:47:50,539 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:47:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:47:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1176081279, now seen corresponding path program 1 times [2021-11-05 19:47:50,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:47:50,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698636076] [2021-11-05 19:47:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:47:50,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:47:50,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:47:50,546 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:47:50,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-05 19:47:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:47:58,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 3915 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:47:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:48:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:48:00,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:48:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:48:01,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:48:01,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698636076] [2021-11-05 19:48:01,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698636076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:48:01,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:48:01,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:48:01,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392240555] [2021-11-05 19:48:01,450 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:48:01,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:48:01,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:48:01,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:48:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:48:01,451 INFO L87 Difference]: Start difference. First operand 12728 states and 17754 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2021-11-05 19:48:03,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:48:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:48:09,923 INFO L93 Difference]: Finished difference Result 31916 states and 44692 transitions. [2021-11-05 19:48:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:48:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 197 [2021-11-05 19:48:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:48:09,951 INFO L225 Difference]: With dead ends: 31916 [2021-11-05 19:48:09,951 INFO L226 Difference]: Without dead ends: 19308 [2021-11-05 19:48:09,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 171.64ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:48:09,965 INFO L933 BasicCegarLoop]: 2773 mSDtfsCounter, 3355 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7158.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 8160 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.84ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7492.38ms IncrementalHoareTripleChecker+Time [2021-11-05 19:48:09,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3355 Valid, 8160 Invalid, 253 Unknown, 0 Unchecked, 7.84ms Time], IncrementalHoareTripleChecker [82 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 7492.38ms Time] [2021-11-05 19:48:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19308 states. [2021-11-05 19:48:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19308 to 19228. [2021-11-05 19:48:10,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19228 states, 19221 states have (on average 1.387128661359971) internal successors, (26662), 19227 states have internal predecessors, (26662), 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) [2021-11-05 19:48:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19228 states to 19228 states and 26662 transitions. [2021-11-05 19:48:10,980 INFO L78 Accepts]: Start accepts. Automaton has 19228 states and 26662 transitions. Word has length 197 [2021-11-05 19:48:10,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:48:10,980 INFO L470 AbstractCegarLoop]: Abstraction has 19228 states and 26662 transitions. [2021-11-05 19:48:10,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2021-11-05 19:48:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 19228 states and 26662 transitions. [2021-11-05 19:48:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-05 19:48:10,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:48:10,988 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:48:11,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-05 19:48:11,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:48:11,189 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:48:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:48:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 284399362, now seen corresponding path program 1 times [2021-11-05 19:48:11,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:48:11,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679011391] [2021-11-05 19:48:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:48:11,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:48:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:48:11,195 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:48:11,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-05 19:48:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:48:20,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 3993 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:48:20,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:48:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-05 19:48:20,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:48:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-05 19:48:20,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:48:20,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679011391] [2021-11-05 19:48:20,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679011391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:48:20,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:48:20,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:48:20,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864131973] [2021-11-05 19:48:20,890 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:48:20,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:48:20,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:48:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:48:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:48:20,891 INFO L87 Difference]: Start difference. First operand 19228 states and 26662 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2021-11-05 19:48:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:48:24,148 INFO L93 Difference]: Finished difference Result 34026 states and 47709 transitions. [2021-11-05 19:48:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:48:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 217 [2021-11-05 19:48:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:48:24,201 INFO L225 Difference]: With dead ends: 34026 [2021-11-05 19:48:24,201 INFO L226 Difference]: Without dead ends: 34016 [2021-11-05 19:48:24,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 169.06ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:48:24,210 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 2075 mSDsluCounter, 5148 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1579.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 9814 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1654.05ms IncrementalHoareTripleChecker+Time [2021-11-05 19:48:24,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 9814 Invalid, 81 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1654.05ms Time] [2021-11-05 19:48:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34016 states. [2021-11-05 19:48:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34016 to 19218. [2021-11-05 19:48:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19218 states, 19216 states have (on average 1.3851477935054122) internal successors, (26617), 19217 states have internal predecessors, (26617), 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) [2021-11-05 19:48:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19218 states to 19218 states and 26617 transitions. [2021-11-05 19:48:25,328 INFO L78 Accepts]: Start accepts. Automaton has 19218 states and 26617 transitions. Word has length 217 [2021-11-05 19:48:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:48:25,328 INFO L470 AbstractCegarLoop]: Abstraction has 19218 states and 26617 transitions. [2021-11-05 19:48:25,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2021-11-05 19:48:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 19218 states and 26617 transitions. [2021-11-05 19:48:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-05 19:48:25,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:48:25,343 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:48:25,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-05 19:48:25,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:48:25,550 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:48:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:48:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2059051649, now seen corresponding path program 1 times [2021-11-05 19:48:25,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:48:25,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771795269] [2021-11-05 19:48:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:48:25,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:48:25,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:48:25,557 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:48:25,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-05 19:48:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:48:34,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 4144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:48:34,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:48:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:48:35,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:48:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:48:36,978 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:48:36,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771795269] [2021-11-05 19:48:36,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771795269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:48:36,978 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:48:36,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 19:48:36,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187112140] [2021-11-05 19:48:36,979 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:48:36,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 19:48:36,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:48:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 19:48:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:48:36,980 INFO L87 Difference]: Start difference. First operand 19218 states and 26617 transitions. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2021-11-05 19:48:39,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:48:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:48:45,085 INFO L93 Difference]: Finished difference Result 55486 states and 76599 transitions. [2021-11-05 19:48:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 19:48:45,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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 233 [2021-11-05 19:48:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:48:45,141 INFO L225 Difference]: With dead ends: 55486 [2021-11-05 19:48:45,141 INFO L226 Difference]: Without dead ends: 36388 [2021-11-05 19:48:45,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1170.56ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:48:45,166 INFO L933 BasicCegarLoop]: 4876 mSDtfsCounter, 11600 mSDsluCounter, 14563 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5387.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11600 SdHoareTripleChecker+Valid, 19439 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.65ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5549.34ms IncrementalHoareTripleChecker+Time [2021-11-05 19:48:45,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11600 Valid, 19439 Invalid, 54 Unknown, 0 Unchecked, 15.65ms Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 5549.34ms Time] [2021-11-05 19:48:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36388 states. [2021-11-05 19:48:46,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36388 to 19234. [2021-11-05 19:48:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 19232 states have (on average 1.3848273710482528) internal successors, (26633), 19233 states have internal predecessors, (26633), 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) [2021-11-05 19:48:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 26633 transitions. [2021-11-05 19:48:46,413 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 26633 transitions. Word has length 233 [2021-11-05 19:48:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:48:46,413 INFO L470 AbstractCegarLoop]: Abstraction has 19234 states and 26633 transitions. [2021-11-05 19:48:46,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 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) [2021-11-05 19:48:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 26633 transitions. [2021-11-05 19:48:46,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-05 19:48:46,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:48:46,431 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:48:46,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-05 19:48:46,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:48:46,632 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:48:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:48:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1974945632, now seen corresponding path program 1 times [2021-11-05 19:48:46,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:48:46,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805607233] [2021-11-05 19:48:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:48:46,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:48:46,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:48:46,639 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:48:46,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-05 19:48:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:48:55,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 4205 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:48:55,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:48:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:48:57,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:48:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:48:59,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:48:59,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805607233] [2021-11-05 19:48:59,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805607233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:48:59,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:48:59,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:48:59,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306354218] [2021-11-05 19:48:59,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:48:59,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:48:59,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:48:59,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:48:59,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:48:59,094 INFO L87 Difference]: Start difference. First operand 19234 states and 26633 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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) [2021-11-05 19:49:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:49:05,960 INFO L93 Difference]: Finished difference Result 71872 states and 100004 transitions. [2021-11-05 19:49:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:49:05,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 256 [2021-11-05 19:49:05,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:49:06,053 INFO L225 Difference]: With dead ends: 71872 [2021-11-05 19:49:06,053 INFO L226 Difference]: Without dead ends: 52758 [2021-11-05 19:49:06,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 167.38ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:49:06,079 INFO L933 BasicCegarLoop]: 4765 mSDtfsCounter, 4407 mSDsluCounter, 7348 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3634.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4407 SdHoareTripleChecker+Valid, 12113 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3748.90ms IncrementalHoareTripleChecker+Time [2021-11-05 19:49:06,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4407 Valid, 12113 Invalid, 100 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [22 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 3748.90ms Time] [2021-11-05 19:49:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52758 states. [2021-11-05 19:49:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52758 to 19698. [2021-11-05 19:49:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19698 states, 19696 states have (on average 1.3822603574329813) internal successors, (27225), 19697 states have internal predecessors, (27225), 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) [2021-11-05 19:49:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19698 states to 19698 states and 27225 transitions. [2021-11-05 19:49:07,610 INFO L78 Accepts]: Start accepts. Automaton has 19698 states and 27225 transitions. Word has length 256 [2021-11-05 19:49:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:49:07,610 INFO L470 AbstractCegarLoop]: Abstraction has 19698 states and 27225 transitions. [2021-11-05 19:49:07,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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) [2021-11-05 19:49:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19698 states and 27225 transitions. [2021-11-05 19:49:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-05 19:49:07,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:49:07,627 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:49:07,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-05 19:49:07,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:49:07,828 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:49:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:49:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash -278364029, now seen corresponding path program 1 times [2021-11-05 19:49:07,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:49:07,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032922467] [2021-11-05 19:49:07,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:49:07,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:49:07,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:49:07,835 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:49:07,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-05 19:49:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:49:16,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 4241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 19:49:16,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:49:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:49:18,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:49:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:49:20,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:49:20,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032922467] [2021-11-05 19:49:20,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032922467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:49:20,531 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:49:20,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 19:49:20,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463227936] [2021-11-05 19:49:20,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:49:20,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:49:20,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:49:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:49:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:49:20,532 INFO L87 Difference]: Start difference. First operand 19698 states and 27225 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2021-11-05 19:49:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:49:27,704 INFO L93 Difference]: Finished difference Result 76864 states and 106404 transitions. [2021-11-05 19:49:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:49:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 262 [2021-11-05 19:49:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:49:27,800 INFO L225 Difference]: With dead ends: 76864 [2021-11-05 19:49:27,800 INFO L226 Difference]: Without dead ends: 57286 [2021-11-05 19:49:27,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 165.00ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:49:27,823 INFO L933 BasicCegarLoop]: 6408 mSDtfsCounter, 5073 mSDsluCounter, 7525 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3778.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 13933 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.80ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3843.68ms IncrementalHoareTripleChecker+Time [2021-11-05 19:49:27,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5073 Valid, 13933 Invalid, 57 Unknown, 0 Unchecked, 9.80ms Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 3843.68ms Time] [2021-11-05 19:49:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57286 states. [2021-11-05 19:49:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57286 to 22914. [2021-11-05 19:49:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22914 states, 22912 states have (on average 1.3708537011173185) internal successors, (31409), 22913 states have internal predecessors, (31409), 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) [2021-11-05 19:49:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22914 states to 22914 states and 31409 transitions. [2021-11-05 19:49:29,729 INFO L78 Accepts]: Start accepts. Automaton has 22914 states and 31409 transitions. Word has length 262 [2021-11-05 19:49:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:49:29,729 INFO L470 AbstractCegarLoop]: Abstraction has 22914 states and 31409 transitions. [2021-11-05 19:49:29,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2021-11-05 19:49:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22914 states and 31409 transitions. [2021-11-05 19:49:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-05 19:49:29,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:49:29,750 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:49:29,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-05 19:49:29,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:49:29,950 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:49:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:49:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1288393921, now seen corresponding path program 1 times [2021-11-05 19:49:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:49:29,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642136686] [2021-11-05 19:49:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:49:29,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:49:29,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:49:29,958 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:49:29,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-05 19:49:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:49:38,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 4241 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-05 19:49:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:49:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-05 19:49:47,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:49:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-05 19:49:55,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:49:55,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642136686] [2021-11-05 19:49:55,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642136686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:49:55,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:49:55,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-05 19:49:55,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847508482] [2021-11-05 19:49:55,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:49:55,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 19:49:55,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:49:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 19:49:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-05 19:49:55,302 INFO L87 Difference]: Start difference. First operand 22914 states and 31409 transitions. Second operand has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 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) [2021-11-05 19:49:57,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:51:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:51:09,916 INFO L93 Difference]: Finished difference Result 154405 states and 213802 transitions. [2021-11-05 19:51:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-05 19:51:09,917 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 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 262 [2021-11-05 19:51:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:51:10,156 INFO L225 Difference]: With dead ends: 154405 [2021-11-05 19:51:10,157 INFO L226 Difference]: Without dead ends: 131611 [2021-11-05 19:51:10,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 34251.50ms TimeCoverageRelationStatistics Valid=1156, Invalid=2876, Unknown=0, NotChecked=0, Total=4032 [2021-11-05 19:51:10,207 INFO L933 BasicCegarLoop]: 6068 mSDtfsCounter, 79654 mSDsluCounter, 41404 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 242 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33184.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79654 SdHoareTripleChecker+Valid, 47472 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.96ms SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34485.94ms IncrementalHoareTripleChecker+Time [2021-11-05 19:51:10,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79654 Valid, 47472 Invalid, 1365 Unknown, 0 Unchecked, 120.96ms Time], IncrementalHoareTripleChecker [242 Valid, 1122 Invalid, 1 Unknown, 0 Unchecked, 34485.94ms Time] [2021-11-05 19:51:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131611 states. [2021-11-05 19:51:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131611 to 23050. [2021-11-05 19:51:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23050 states, 23048 states have (on average 1.3686653939604303) internal successors, (31545), 23049 states have internal predecessors, (31545), 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) [2021-11-05 19:51:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23050 states to 23050 states and 31545 transitions. [2021-11-05 19:51:13,722 INFO L78 Accepts]: Start accepts. Automaton has 23050 states and 31545 transitions. Word has length 262 [2021-11-05 19:51:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:51:13,723 INFO L470 AbstractCegarLoop]: Abstraction has 23050 states and 31545 transitions. [2021-11-05 19:51:13,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.5) internal successors, (270), 20 states have internal predecessors, (270), 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) [2021-11-05 19:51:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23050 states and 31545 transitions. [2021-11-05 19:51:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-05 19:51:13,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:51:13,738 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:51:13,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-05 19:51:13,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 19:51:13,938 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 19:51:13,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:51:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 271252464, now seen corresponding path program 1 times [2021-11-05 19:51:13,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 19:51:13,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777852446] [2021-11-05 19:51:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:51:13,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 19:51:13,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 19:51:13,946 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 19:51:13,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-05 19:51:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:51:22,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 4275 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-05 19:51:22,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:51:25,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 11 [2021-11-05 19:51:28,088 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32))) (let ((.cse0 ((_ extract 7 0) v_arrayElimCell_1))) (and (not (= (_ bv10 32) ((_ zero_extend 24) .cse0))) (= .cse0 |c_ULTIMATE.start_acm_probe_#t~mem864|)))) is different from true [2021-11-05 19:51:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:51:29,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:51:33,965 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 19:51:33,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2021-11-05 19:51:36,159 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-05 19:51:36,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2021-11-05 19:51:36,456 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-05 19:51:36,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 49 [2021-11-05 19:51:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-05 19:51:38,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 19:51:38,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777852446] [2021-11-05 19:51:38,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777852446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 19:51:38,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:51:38,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 15 [2021-11-05 19:51:38,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143003181] [2021-11-05 19:51:38,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 19:51:38,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 19:51:38,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 19:51:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 19:51:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=149, Unknown=1, NotChecked=24, Total=210 [2021-11-05 19:51:38,761 INFO L87 Difference]: Start difference. First operand 23050 states and 31545 transitions. Second operand has 15 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 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) [2021-11-05 19:51:41,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:51:43,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:51:45,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:51:58,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:11,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:18,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:19,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:21,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:23,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:30,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:32,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:34,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:37,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:40,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:49,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:55,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:52:58,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:07,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:10,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:13,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:17,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:20,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:22,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:23,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:27,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 19:53:37,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15