./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.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 b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 18:56:46,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:56:46,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:56:46,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:56:46,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:56:46,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:56:46,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:56:46,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:56:46,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:56:46,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:56:46,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:56:46,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:56:46,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:56:46,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:56:46,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:56:46,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:56:46,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:56:46,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:56:46,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:56:46,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:56:46,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:56:46,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:56:46,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:56:46,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:56:46,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:56:46,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:56:46,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:56:46,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:56:46,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:56:46,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:56:46,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:56:46,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:56:46,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:56:46,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:56:46,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:56:46,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:56:46,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:56:46,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:56:46,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:56:46,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:56:46,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:56:46,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:56:46,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:56:46,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:56:46,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:56:46,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:56:46,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:56:46,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:56:46,399 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:56:46,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:56:46,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:56:46,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:56:46,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:56:46,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:56:46,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:56:46,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:56:46,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:56:46,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:56:46,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:56:46,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:56:46,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:56:46,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:56:46,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:56:46,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:56:46,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:56:46,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:56:46,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:56:46,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:56:46,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:56:46,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:56:46,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:56:46,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0b334a11302bf275fa3309d3cd34d1e1506650a5df36f9442e98ab153dfb38d [2021-11-02 18:56:46,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:56:46,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:56:46,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:56:46,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:56:46,604 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:56:46,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-02 18:56:46,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d390f4c/7dc105ed3dbd4598af9d0064fb889467/FLAGe4d66f3a5 [2021-11-02 18:56:47,233 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:56:47,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-02 18:56:47,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d390f4c/7dc105ed3dbd4598af9d0064fb889467/FLAGe4d66f3a5 [2021-11-02 18:56:47,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d390f4c/7dc105ed3dbd4598af9d0064fb889467 [2021-11-02 18:56:47,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:56:47,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:56:47,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:56:47,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:56:47,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:56:47,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:56:47" (1/1) ... [2021-11-02 18:56:47,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dd9800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:47, skipping insertion in model container [2021-11-02 18:56:47,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:56:47" (1/1) ... [2021-11-02 18:56:47,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:56:47,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:56:48,100 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-02 18:56:48,100 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-02 18:56:48,196 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-02 18:56:48,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:56:48,420 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:56:48,456 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3460] [2021-11-02 18:56:48,456 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3461-3462] [2021-11-02 18:56:48,461 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[104435,104448] [2021-11-02 18:56:48,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:56:48,630 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:56:48,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48 WrapperNode [2021-11-02 18:56:48,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:56:48,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:56:48,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:56:48,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:56:48,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:56:48,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:56:48,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:56:48,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:56:48,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:56:48,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:56:48,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:56:48,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:56:48,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (1/1) ... [2021-11-02 18:56:48,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:56:49,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:56:49,029 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) [2021-11-02 18:56:49,048 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 [2021-11-02 18:56:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:56:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:56:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:56:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:56:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:56:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:56:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:56:49,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:56:50,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:56:50,418 INFO L299 CfgBuilder]: Removed 1042 assume(true) statements. [2021-11-02 18:56:50,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:56:50 BoogieIcfgContainer [2021-11-02 18:56:50,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:56:50,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:56:50,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:56:50,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:56:50,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:56:47" (1/3) ... [2021-11-02 18:56:50,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c23408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:56:50, skipping insertion in model container [2021-11-02 18:56:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:56:48" (2/3) ... [2021-11-02 18:56:50,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c23408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:56:50, skipping insertion in model container [2021-11-02 18:56:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:56:50" (3/3) ... [2021-11-02 18:56:50,426 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-02 18:56:50,431 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:56:50,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-02 18:56:50,470 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:56:50,477 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 [2021-11-02 18:56:50,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-02 18:56:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 835 states, 828 states have (on average 1.3973429951690821) internal successors, (1157), 834 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:50,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 18:56:50,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:50,519 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] [2021-11-02 18:56:50,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:56:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1385985514, now seen corresponding path program 1 times [2021-11-02 18:56:50,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:50,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7353755] [2021-11-02 18:56:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:50,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:56:50,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:50,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7353755] [2021-11-02 18:56:50,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7353755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:56:50,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:56:50,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 18:56:50,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766851799] [2021-11-02 18:56:50,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 18:56:50,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 18:56:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 18:56:50,906 INFO L87 Difference]: Start difference. First operand has 835 states, 828 states have (on average 1.3973429951690821) internal successors, (1157), 834 states have internal predecessors, (1157), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:56:53,781 INFO L93 Difference]: Finished difference Result 1667 states and 2311 transitions. [2021-11-02 18:56:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 18:56:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-02 18:56:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:56:53,798 INFO L225 Difference]: With dead ends: 1667 [2021-11-02 18:56:53,798 INFO L226 Difference]: Without dead ends: 823 [2021-11-02 18:56:53,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 18:56:53,806 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2534.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2796.42ms IncrementalHoareTripleChecker+Time [2021-11-02 18:56:53,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 1136 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [0 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2796.42ms Time] [2021-11-02 18:56:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-02 18:56:53,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2021-11-02 18:56:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 817 states have (on average 1.3733170134638923) internal successors, (1122), 822 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1122 transitions. [2021-11-02 18:56:53,889 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1122 transitions. Word has length 62 [2021-11-02 18:56:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:56:53,889 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1122 transitions. [2021-11-02 18:56:53,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1122 transitions. [2021-11-02 18:56:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 18:56:53,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:53,893 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] [2021-11-02 18:56:53,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:56:53,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:56:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1732742655, now seen corresponding path program 1 times [2021-11-02 18:56:53,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:53,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288059435] [2021-11-02 18:56:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:53,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:56:54,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:54,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288059435] [2021-11-02 18:56:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288059435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:56:54,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:56:54,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:56:54,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310672117] [2021-11-02 18:56:54,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:56:54,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:56:54,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:54,048 INFO L87 Difference]: Start difference. First operand 823 states and 1122 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:56:58,161 INFO L93 Difference]: Finished difference Result 1664 states and 2273 transitions. [2021-11-02 18:56:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:56:58,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-02 18:56:58,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:56:58,165 INFO L225 Difference]: With dead ends: 1664 [2021-11-02 18:56:58,165 INFO L226 Difference]: Without dead ends: 844 [2021-11-02 18:56:58,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:56:58,169 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3663.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4043.97ms IncrementalHoareTripleChecker+Time [2021-11-02 18:56:58,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 2242 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [2 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 4043.97ms Time] [2021-11-02 18:56:58,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-11-02 18:56:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 841. [2021-11-02 18:56:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 835 states have (on average 1.3760479041916167) internal successors, (1149), 840 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1149 transitions. [2021-11-02 18:56:58,204 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1149 transitions. Word has length 63 [2021-11-02 18:56:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:56:58,205 INFO L470 AbstractCegarLoop]: Abstraction has 841 states and 1149 transitions. [2021-11-02 18:56:58,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1149 transitions. [2021-11-02 18:56:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 18:56:58,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:58,207 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] [2021-11-02 18:56:58,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:56:58,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:56:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2128587854, now seen corresponding path program 1 times [2021-11-02 18:56:58,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:58,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641405141] [2021-11-02 18:56:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:58,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:56:58,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:58,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641405141] [2021-11-02 18:56:58,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641405141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:56:58,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:56:58,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:56:58,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372774378] [2021-11-02 18:56:58,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:56:58,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:58,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:56:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:56:58,328 INFO L87 Difference]: Start difference. First operand 841 states and 1149 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:05,218 INFO L93 Difference]: Finished difference Result 1683 states and 2300 transitions. [2021-11-02 18:57:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:57:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-02 18:57:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:05,221 INFO L225 Difference]: With dead ends: 1683 [2021-11-02 18:57:05,221 INFO L226 Difference]: Without dead ends: 839 [2021-11-02 18:57:05,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.11ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:57:05,223 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6304.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.63ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6805.65ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:05,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 4485 Unknown, 0 Unchecked, 9.63ms Time], IncrementalHoareTripleChecker [3 Valid, 4482 Invalid, 0 Unknown, 0 Unchecked, 6805.65ms Time] [2021-11-02 18:57:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-02 18:57:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2021-11-02 18:57:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 833 states have (on average 1.3733493397358945) internal successors, (1144), 838 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1144 transitions. [2021-11-02 18:57:05,236 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1144 transitions. Word has length 85 [2021-11-02 18:57:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:05,236 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1144 transitions. [2021-11-02 18:57:05,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1144 transitions. [2021-11-02 18:57:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 18:57:05,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:05,238 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] [2021-11-02 18:57:05,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:57:05,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:05,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1592921077, now seen corresponding path program 1 times [2021-11-02 18:57:05,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:05,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601822307] [2021-11-02 18:57:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:05,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:57:05,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:05,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601822307] [2021-11-02 18:57:05,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601822307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:05,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:05,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 18:57:05,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976266633] [2021-11-02 18:57:05,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 18:57:05,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 18:57:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:57:05,352 INFO L87 Difference]: Start difference. First operand 839 states and 1144 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:11,136 INFO L93 Difference]: Finished difference Result 1763 states and 2417 transitions. [2021-11-02 18:57:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 18:57:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-02 18:57:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:11,140 INFO L225 Difference]: With dead ends: 1763 [2021-11-02 18:57:11,140 INFO L226 Difference]: Without dead ends: 927 [2021-11-02 18:57:11,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 34.43ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-02 18:57:11,141 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1309 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5239.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.25ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5693.19ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:11,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 0 Invalid, 3435 Unknown, 0 Unchecked, 8.25ms Time], IncrementalHoareTripleChecker [42 Valid, 3393 Invalid, 0 Unknown, 0 Unchecked, 5693.19ms Time] [2021-11-02 18:57:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-02 18:57:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 899. [2021-11-02 18:57:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 893 states have (on average 1.3818589025755879) internal successors, (1234), 898 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1234 transitions. [2021-11-02 18:57:11,160 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1234 transitions. Word has length 85 [2021-11-02 18:57:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:11,160 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1234 transitions. [2021-11-02 18:57:11,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1234 transitions. [2021-11-02 18:57:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 18:57:11,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:11,162 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:11,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:57:11,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1295159176, now seen corresponding path program 1 times [2021-11-02 18:57:11,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:11,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042113402] [2021-11-02 18:57:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:11,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:57:11,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:11,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042113402] [2021-11-02 18:57:11,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042113402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:11,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:11,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:57:11,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728401042] [2021-11-02 18:57:11,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:57:11,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:57:11,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:11,250 INFO L87 Difference]: Start difference. First operand 899 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:16,008 INFO L93 Difference]: Finished difference Result 2689 states and 3693 transitions. [2021-11-02 18:57:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:57:16,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 99 [2021-11-02 18:57:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:16,014 INFO L225 Difference]: With dead ends: 2689 [2021-11-02 18:57:16,015 INFO L226 Difference]: Without dead ends: 1793 [2021-11-02 18:57:16,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:16,018 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1109 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4261.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.32ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4693.06ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:16,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 0 Invalid, 2303 Unknown, 0 Unchecked, 3.32ms Time], IncrementalHoareTripleChecker [1 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 4693.06ms Time] [2021-11-02 18:57:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2021-11-02 18:57:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 900. [2021-11-02 18:57:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 894 states have (on average 1.3814317673378076) internal successors, (1235), 899 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1235 transitions. [2021-11-02 18:57:16,045 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1235 transitions. Word has length 99 [2021-11-02 18:57:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:16,048 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 1235 transitions. [2021-11-02 18:57:16,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1235 transitions. [2021-11-02 18:57:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 18:57:16,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:16,050 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:16,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:57:16,050 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1712555782, now seen corresponding path program 1 times [2021-11-02 18:57:16,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:16,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764646828] [2021-11-02 18:57:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:16,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:16,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:16,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764646828] [2021-11-02 18:57:16,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764646828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:16,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:16,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:57:16,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031935572] [2021-11-02 18:57:16,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:57:16,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:57:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:57:16,133 INFO L87 Difference]: Start difference. First operand 900 states and 1235 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:21,700 INFO L93 Difference]: Finished difference Result 1980 states and 2733 transitions. [2021-11-02 18:57:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:57:21,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 99 [2021-11-02 18:57:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:21,705 INFO L225 Difference]: With dead ends: 1980 [2021-11-02 18:57:21,706 INFO L226 Difference]: Without dead ends: 1083 [2021-11-02 18:57:21,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:57:21,710 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5003.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5491.43ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:21,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 0 Invalid, 3640 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [5 Valid, 3635 Invalid, 0 Unknown, 0 Unchecked, 5491.43ms Time] [2021-11-02 18:57:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-11-02 18:57:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 904. [2021-11-02 18:57:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 898 states have (on average 1.3797327394209353) internal successors, (1239), 903 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1239 transitions. [2021-11-02 18:57:21,739 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1239 transitions. Word has length 99 [2021-11-02 18:57:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:21,740 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1239 transitions. [2021-11-02 18:57:21,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1239 transitions. [2021-11-02 18:57:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 18:57:21,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:21,741 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:21,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:57:21,741 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1060503898, now seen corresponding path program 1 times [2021-11-02 18:57:21,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:21,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495275850] [2021-11-02 18:57:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:21,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:21,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:21,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495275850] [2021-11-02 18:57:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495275850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:21,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:21,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 18:57:21,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587156500] [2021-11-02 18:57:21,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:57:21,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:57:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:21,901 INFO L87 Difference]: Start difference. First operand 904 states and 1239 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:24,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:24,222 INFO L93 Difference]: Finished difference Result 1805 states and 2475 transitions. [2021-11-02 18:57:24,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:57:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2021-11-02 18:57:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:24,225 INFO L225 Difference]: With dead ends: 1805 [2021-11-02 18:57:24,225 INFO L226 Difference]: Without dead ends: 904 [2021-11-02 18:57:24,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:24,227 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1027 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2071.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2280.41ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:24,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 0 Invalid, 1116 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [9 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 2280.41ms Time] [2021-11-02 18:57:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-02 18:57:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2021-11-02 18:57:24,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 898 states have (on average 1.3652561247216035) internal successors, (1226), 903 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1226 transitions. [2021-11-02 18:57:24,246 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1226 transitions. Word has length 107 [2021-11-02 18:57:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:24,247 INFO L470 AbstractCegarLoop]: Abstraction has 904 states and 1226 transitions. [2021-11-02 18:57:24,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:24,247 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1226 transitions. [2021-11-02 18:57:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 18:57:24,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:24,248 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:24,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:57:24,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:24,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash -242855448, now seen corresponding path program 1 times [2021-11-02 18:57:24,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:24,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164281858] [2021-11-02 18:57:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:24,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:24,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:24,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164281858] [2021-11-02 18:57:24,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164281858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:24,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:24,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:57:24,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180256672] [2021-11-02 18:57:24,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:57:24,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:57:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:24,344 INFO L87 Difference]: Start difference. First operand 904 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:28,390 INFO L93 Difference]: Finished difference Result 1807 states and 2453 transitions. [2021-11-02 18:57:28,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:57:28,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2021-11-02 18:57:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:28,393 INFO L225 Difference]: With dead ends: 1807 [2021-11-02 18:57:28,393 INFO L226 Difference]: Without dead ends: 906 [2021-11-02 18:57:28,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:28,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3708.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4009.67ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:28,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2214 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [2 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 4009.67ms Time] [2021-11-02 18:57:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-02 18:57:28,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2021-11-02 18:57:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 900 states have (on average 1.3644444444444443) internal successors, (1228), 905 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1228 transitions. [2021-11-02 18:57:28,413 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1228 transitions. Word has length 107 [2021-11-02 18:57:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:28,413 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1228 transitions. [2021-11-02 18:57:28,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1228 transitions. [2021-11-02 18:57:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 18:57:28,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:28,415 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:57:28,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -635882458, now seen corresponding path program 1 times [2021-11-02 18:57:28,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:28,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571094444] [2021-11-02 18:57:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:28,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:28,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:28,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571094444] [2021-11-02 18:57:28,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571094444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:28,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:28,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:57:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069530180] [2021-11-02 18:57:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:57:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:57:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:28,489 INFO L87 Difference]: Start difference. First operand 906 states and 1228 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:35,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:35,062 INFO L93 Difference]: Finished difference Result 2622 states and 3570 transitions. [2021-11-02 18:57:35,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:57:35,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 107 [2021-11-02 18:57:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:35,067 INFO L225 Difference]: With dead ends: 2622 [2021-11-02 18:57:35,067 INFO L226 Difference]: Without dead ends: 1719 [2021-11-02 18:57:35,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:57:35,069 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 978 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 3114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6007.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6504.74ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:35,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 0 Invalid, 3124 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [10 Valid, 3114 Invalid, 0 Unknown, 0 Unchecked, 6504.74ms Time] [2021-11-02 18:57:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-02 18:57:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 912. [2021-11-02 18:57:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 906 states have (on average 1.3620309050772628) internal successors, (1234), 911 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1234 transitions. [2021-11-02 18:57:35,091 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1234 transitions. Word has length 107 [2021-11-02 18:57:35,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:35,091 INFO L470 AbstractCegarLoop]: Abstraction has 912 states and 1234 transitions. [2021-11-02 18:57:35,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1234 transitions. [2021-11-02 18:57:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-02 18:57:35,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:35,093 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:35,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 18:57:35,093 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:35,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1658569363, now seen corresponding path program 1 times [2021-11-02 18:57:35,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:35,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433184259] [2021-11-02 18:57:35,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:35,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:35,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:35,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433184259] [2021-11-02 18:57:35,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433184259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:57:35,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584524731] [2021-11-02 18:57:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:35,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:57:35,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:57:35,197 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) [2021-11-02 18:57:35,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 18:57:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:35,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:57:35,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:57:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 18:57:35,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:57:35,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584524731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:35,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 18:57:35,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 18:57:35,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838398243] [2021-11-02 18:57:35,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:57:35,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:57:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:57:35,750 INFO L87 Difference]: Start difference. First operand 912 states and 1234 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) [2021-11-02 18:57:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:41,852 INFO L93 Difference]: Finished difference Result 2604 states and 3552 transitions. [2021-11-02 18:57:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:57:41,852 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 111 [2021-11-02 18:57:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:41,857 INFO L225 Difference]: With dead ends: 2604 [2021-11-02 18:57:41,857 INFO L226 Difference]: Without dead ends: 1695 [2021-11-02 18:57:41,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 5.61ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:57:41,859 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 937 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 3070 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5531.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.00ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6011.04ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:41,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 0 Invalid, 3092 Unknown, 0 Unchecked, 4.00ms Time], IncrementalHoareTripleChecker [22 Valid, 3070 Invalid, 0 Unknown, 0 Unchecked, 6011.04ms Time] [2021-11-02 18:57:41,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2021-11-02 18:57:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 948. [2021-11-02 18:57:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 942 states have (on average 1.3609341825902335) internal successors, (1282), 947 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1282 transitions. [2021-11-02 18:57:41,884 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1282 transitions. Word has length 111 [2021-11-02 18:57:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:41,885 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1282 transitions. [2021-11-02 18:57:41,885 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) [2021-11-02 18:57:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1282 transitions. [2021-11-02 18:57:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 18:57:41,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:41,886 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 18:57:41,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 18:57:42,107 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,SelfDestructingSolverStorable9 [2021-11-02 18:57:42,107 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1898073031, now seen corresponding path program 1 times [2021-11-02 18:57:42,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:42,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712900874] [2021-11-02 18:57:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:42,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:42,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:42,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712900874] [2021-11-02 18:57:42,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712900874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:57:42,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670621209] [2021-11-02 18:57:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:42,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:57:42,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:57:42,263 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) [2021-11-02 18:57:42,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 18:57:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:42,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:57:42,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:57:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:42,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:57:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:57:43,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670621209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:57:43,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:57:43,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-02 18:57:43,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733193033] [2021-11-02 18:57:43,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 18:57:43,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 18:57:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:57:43,092 INFO L87 Difference]: Start difference. First operand 948 states and 1282 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:57:56,967 INFO L93 Difference]: Finished difference Result 5151 states and 7035 transitions. [2021-11-02 18:57:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:57:56,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 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 116 [2021-11-02 18:57:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:57:56,977 INFO L225 Difference]: With dead ends: 5151 [2021-11-02 18:57:56,977 INFO L226 Difference]: Without dead ends: 4206 [2021-11-02 18:57:56,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 14.70ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:57:56,980 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3906 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 9909 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12325.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3906 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.00ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 9909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13643.60ms IncrementalHoareTripleChecker+Time [2021-11-02 18:57:56,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3906 Valid, 0 Invalid, 9953 Unknown, 0 Unchecked, 14.00ms Time], IncrementalHoareTripleChecker [44 Valid, 9909 Invalid, 0 Unknown, 0 Unchecked, 13643.60ms Time] [2021-11-02 18:57:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-11-02 18:57:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 1182. [2021-11-02 18:57:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.3401360544217686) internal successors, (1576), 1181 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1576 transitions. [2021-11-02 18:57:57,019 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1576 transitions. Word has length 116 [2021-11-02 18:57:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:57:57,020 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1576 transitions. [2021-11-02 18:57:57,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:57:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1576 transitions. [2021-11-02 18:57:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 18:57:57,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:57:57,022 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-02 18:57:57,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 18:57:57,240 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,SelfDestructingSolverStorable10 [2021-11-02 18:57:57,241 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:57:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:57:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1895567890, now seen corresponding path program 1 times [2021-11-02 18:57:57,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:57:57,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076420440] [2021-11-02 18:57:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:57:57,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:57:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:57:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-02 18:57:57,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:57:57,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076420440] [2021-11-02 18:57:57,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076420440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:57:57,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:57:57,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:57:57,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590015489] [2021-11-02 18:57:57,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:57:57,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:57:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:57:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:57:57,350 INFO L87 Difference]: Start difference. First operand 1182 states and 1576 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:02,423 INFO L93 Difference]: Finished difference Result 2544 states and 3408 transitions. [2021-11-02 18:58:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:58:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 128 [2021-11-02 18:58:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:02,427 INFO L225 Difference]: With dead ends: 2544 [2021-11-02 18:58:02,428 INFO L226 Difference]: Without dead ends: 1365 [2021-11-02 18:58:02,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:58:02,434 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 3591 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4586.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4969.09ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:02,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 3602 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [11 Valid, 3591 Invalid, 0 Unknown, 0 Unchecked, 4969.09ms Time] [2021-11-02 18:58:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-02 18:58:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1182. [2021-11-02 18:58:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1176 states have (on average 1.3401360544217686) internal successors, (1576), 1181 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1576 transitions. [2021-11-02 18:58:02,471 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1576 transitions. Word has length 128 [2021-11-02 18:58:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:02,471 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1576 transitions. [2021-11-02 18:58:02,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1576 transitions. [2021-11-02 18:58:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 18:58:02,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:02,473 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-11-02 18:58:02,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 18:58:02,474 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:58:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2039175664, now seen corresponding path program 1 times [2021-11-02 18:58:02,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:02,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514003309] [2021-11-02 18:58:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:02,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:58:02,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514003309] [2021-11-02 18:58:02,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514003309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:58:02,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508702964] [2021-11-02 18:58:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:02,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:02,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:58:02,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:58:02,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 18:58:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:03,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 18:58:03,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:58:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:58:03,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:58:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 18:58:03,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508702964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:58:03,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:58:03,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2021-11-02 18:58:03,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349171298] [2021-11-02 18:58:03,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 18:58:03,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:58:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 18:58:03,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:58:03,306 INFO L87 Difference]: Start difference. First operand 1182 states and 1576 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:16,561 INFO L93 Difference]: Finished difference Result 6228 states and 8452 transitions. [2021-11-02 18:58:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:58:16,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 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 129 [2021-11-02 18:58:16,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:16,575 INFO L225 Difference]: With dead ends: 6228 [2021-11-02 18:58:16,576 INFO L226 Difference]: Without dead ends: 5049 [2021-11-02 18:58:16,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 14.93ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:58:16,579 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7791 mSDsluCounter, 6811 mSDsCounter, 0 mSdLazyCounter, 8930 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11747.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7791 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.01ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 8930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12905.86ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:16,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7791 Valid, 0 Invalid, 8982 Unknown, 0 Unchecked, 20.01ms Time], IncrementalHoareTripleChecker [52 Valid, 8930 Invalid, 0 Unknown, 0 Unchecked, 12905.86ms Time] [2021-11-02 18:58:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2021-11-02 18:58:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 1266. [2021-11-02 18:58:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1260 states have (on average 1.3365079365079364) internal successors, (1684), 1265 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1684 transitions. [2021-11-02 18:58:16,680 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1684 transitions. Word has length 129 [2021-11-02 18:58:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:16,680 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 1684 transitions. [2021-11-02 18:58:16,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1684 transitions. [2021-11-02 18:58:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-02 18:58:16,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:16,682 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-02 18:58:16,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 18:58:16,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:16,896 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:58:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:16,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1287416823, now seen corresponding path program 2 times [2021-11-02 18:58:16,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:16,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817212667] [2021-11-02 18:58:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:16,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:17,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:17,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817212667] [2021-11-02 18:58:17,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817212667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:58:17,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:58:17,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:58:17,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966685360] [2021-11-02 18:58:17,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:58:17,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:58:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:58:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:58:17,018 INFO L87 Difference]: Start difference. First operand 1266 states and 1684 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) [2021-11-02 18:58:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:21,074 INFO L93 Difference]: Finished difference Result 2533 states and 3371 transitions. [2021-11-02 18:58:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:58:21,075 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 133 [2021-11-02 18:58:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:21,078 INFO L225 Difference]: With dead ends: 2533 [2021-11-02 18:58:21,078 INFO L226 Difference]: Without dead ends: 1270 [2021-11-02 18:58:21,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:58:21,080 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3665.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3970.24ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:21,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 2214 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [2 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 3970.24ms Time] [2021-11-02 18:58:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-02 18:58:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1270. [2021-11-02 18:58:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1264 states have (on average 1.3354430379746836) internal successors, (1688), 1269 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1688 transitions. [2021-11-02 18:58:21,142 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1688 transitions. Word has length 133 [2021-11-02 18:58:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:21,142 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 1688 transitions. [2021-11-02 18:58:21,143 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) [2021-11-02 18:58:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1688 transitions. [2021-11-02 18:58:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 18:58:21,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:21,145 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 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] [2021-11-02 18:58:21,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 18:58:21,145 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:58:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1670612132, now seen corresponding path program 1 times [2021-11-02 18:58:21,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:21,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652587776] [2021-11-02 18:58:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:21,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:21,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:21,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652587776] [2021-11-02 18:58:21,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652587776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:58:21,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883940261] [2021-11-02 18:58:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:21,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:21,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:58:21,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:58:21,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 18:58:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:22,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-02 18:58:22,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:58:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-02 18:58:22,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:58:22,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883940261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:58:22,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 18:58:22,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-02 18:58:22,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016187590] [2021-11-02 18:58:22,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:58:22,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:58:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:58:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:58:22,677 INFO L87 Difference]: Start difference. First operand 1270 states and 1688 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2021-11-02 18:58:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:28,751 INFO L93 Difference]: Finished difference Result 2951 states and 3955 transitions. [2021-11-02 18:58:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:58:28,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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 135 [2021-11-02 18:58:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:28,755 INFO L225 Difference]: With dead ends: 2951 [2021-11-02 18:58:28,755 INFO L226 Difference]: Without dead ends: 1684 [2021-11-02 18:58:28,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.74ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:58:28,757 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 428 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 3817 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5469.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5947.59ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:28,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 0 Invalid, 3824 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [7 Valid, 3817 Invalid, 0 Unknown, 0 Unchecked, 5947.59ms Time] [2021-11-02 18:58:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-11-02 18:58:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1274. [2021-11-02 18:58:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1268 states have (on average 1.334384858044164) internal successors, (1692), 1273 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1692 transitions. [2021-11-02 18:58:28,796 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1692 transitions. Word has length 135 [2021-11-02 18:58:28,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:28,797 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 1692 transitions. [2021-11-02 18:58:28,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2021-11-02 18:58:28,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1692 transitions. [2021-11-02 18:58:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 18:58:28,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:28,803 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 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] [2021-11-02 18:58:28,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 18:58:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 18:58:29,016 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:58:29,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:29,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1480978942, now seen corresponding path program 1 times [2021-11-02 18:58:29,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:29,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945487628] [2021-11-02 18:58:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:29,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:29,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:29,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945487628] [2021-11-02 18:58:29,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945487628] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:58:29,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713050405] [2021-11-02 18:58:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:29,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:58:29,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:58:29,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 18:58:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:29,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:58:29,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:58:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-02 18:58:30,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:58:30,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713050405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:58:30,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 18:58:30,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 18:58:30,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513273002] [2021-11-02 18:58:30,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:58:30,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:58:30,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:58:30,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:58:30,150 INFO L87 Difference]: Start difference. First operand 1274 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:34,190 INFO L93 Difference]: Finished difference Result 2690 states and 3588 transitions. [2021-11-02 18:58:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:58:34,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 138 [2021-11-02 18:58:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:34,194 INFO L225 Difference]: With dead ends: 2690 [2021-11-02 18:58:34,194 INFO L226 Difference]: Without dead ends: 1419 [2021-11-02 18:58:34,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.16ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:58:34,196 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 2302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3670.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3965.77ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:34,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 2304 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [2 Valid, 2302 Invalid, 0 Unknown, 0 Unchecked, 3965.77ms Time] [2021-11-02 18:58:34,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-11-02 18:58:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1276. [2021-11-02 18:58:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1270 states have (on average 1.3338582677165354) internal successors, (1694), 1275 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1694 transitions. [2021-11-02 18:58:34,237 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1694 transitions. Word has length 138 [2021-11-02 18:58:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:34,237 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1694 transitions. [2021-11-02 18:58:34,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1694 transitions. [2021-11-02 18:58:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 18:58:34,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:34,239 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 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] [2021-11-02 18:58:34,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 18:58:34,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 18:58:34,445 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:58:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1721218688, now seen corresponding path program 1 times [2021-11-02 18:58:34,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:34,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989798874] [2021-11-02 18:58:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:34,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:34,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:34,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989798874] [2021-11-02 18:58:34,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989798874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:58:34,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815220919] [2021-11-02 18:58:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:34,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:58:34,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:58:34,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 18:58:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:35,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 18:58:35,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:58:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:35,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:58:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:35,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815220919] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:58:35,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:58:35,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-02 18:58:35,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714200791] [2021-11-02 18:58:35,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 18:58:35,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:58:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 18:58:35,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:58:35,970 INFO L87 Difference]: Start difference. First operand 1276 states and 1694 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:58:43,049 INFO L93 Difference]: Finished difference Result 2561 states and 3403 transitions. [2021-11-02 18:58:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:58:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 138 [2021-11-02 18:58:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:58:43,052 INFO L225 Difference]: With dead ends: 2561 [2021-11-02 18:58:43,053 INFO L226 Difference]: Without dead ends: 1288 [2021-11-02 18:58:43,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 22.49ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:58:43,054 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 4436 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6413.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.79ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6974.45ms IncrementalHoareTripleChecker+Time [2021-11-02 18:58:43,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 4449 Unknown, 0 Unchecked, 4.79ms Time], IncrementalHoareTripleChecker [13 Valid, 4436 Invalid, 0 Unknown, 0 Unchecked, 6974.45ms Time] [2021-11-02 18:58:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2021-11-02 18:58:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1288. [2021-11-02 18:58:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1282 states have (on average 1.3307332293291732) internal successors, (1706), 1287 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1706 transitions. [2021-11-02 18:58:43,118 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1706 transitions. Word has length 138 [2021-11-02 18:58:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:58:43,119 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1706 transitions. [2021-11-02 18:58:43,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:58:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1706 transitions. [2021-11-02 18:58:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-02 18:58:43,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:58:43,121 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2021-11-02 18:58:43,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 18:58:43,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 18:58:43,343 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:58:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:58:43,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1183496079, now seen corresponding path program 2 times [2021-11-02 18:58:43,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:58:43,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076751333] [2021-11-02 18:58:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:58:43,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:58:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:58:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:58:43,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:58:43,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076751333] [2021-11-02 18:58:43,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076751333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:58:43,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963880682] [2021-11-02 18:58:43,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 18:58:43,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:58:43,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:58:43,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:58:43,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 18:59:03,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 18:59:03,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:59:03,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 18:59:03,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:59:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:59:04,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:59:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:59:04,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963880682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:59:04,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:59:04,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-02 18:59:04,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885842368] [2021-11-02 18:59:04,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 18:59:04,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:59:04,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 18:59:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-02 18:59:04,320 INFO L87 Difference]: Start difference. First operand 1288 states and 1706 transitions. Second operand has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:59:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:59:18,044 INFO L93 Difference]: Finished difference Result 2597 states and 3445 transitions. [2021-11-02 18:59:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 18:59:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 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 [2021-11-02 18:59:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:59:18,047 INFO L225 Difference]: With dead ends: 2597 [2021-11-02 18:59:18,047 INFO L226 Difference]: Without dead ends: 1312 [2021-11-02 18:59:18,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 181.25ms TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-02 18:59:18,049 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 7745 mSDsCounter, 0 mSdLazyCounter, 8938 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12565.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 8938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13501.47ms IncrementalHoareTripleChecker+Time [2021-11-02 18:59:18,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 8981 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [43 Valid, 8938 Invalid, 0 Unknown, 0 Unchecked, 13501.47ms Time] [2021-11-02 18:59:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-11-02 18:59:18,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1312. [2021-11-02 18:59:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1306 states have (on average 1.324655436447167) internal successors, (1730), 1311 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:59:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1730 transitions. [2021-11-02 18:59:18,093 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1730 transitions. Word has length 144 [2021-11-02 18:59:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:59:18,094 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1730 transitions. [2021-11-02 18:59:18,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.461538461538462) internal successors, (136), 13 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:59:18,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1730 transitions. [2021-11-02 18:59:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-02 18:59:18,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:59:18,096 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 5, 5, 5, 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] [2021-11-02 18:59:18,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 18:59:18,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:59:18,314 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 18:59:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:59:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash 740119533, now seen corresponding path program 3 times [2021-11-02 18:59:18,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:59:18,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049929753] [2021-11-02 18:59:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:59:18,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:59:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:59:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 18:59:18,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:59:18,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049929753] [2021-11-02 18:59:18,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049929753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:59:18,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054123353] [2021-11-02 18:59:18,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 18:59:18,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:59:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:59:18,510 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:59:18,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 19:09:37,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-02 19:09:37,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 19:09:37,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 19:09:37,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:09:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-02 19:09:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 19:09:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 19:09:39,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054123353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 19:09:39,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 19:09:39,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2021-11-02 19:09:39,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269832107] [2021-11-02 19:09:39,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 19:09:39,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:09:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 19:09:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2021-11-02 19:09:39,323 INFO L87 Difference]: Start difference. First operand 1312 states and 1730 transitions. Second operand has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 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) [2021-11-02 19:10:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:10:38,606 INFO L93 Difference]: Finished difference Result 2807 states and 3727 transitions. [2021-11-02 19:10:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 19:10:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 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 156 [2021-11-02 19:10:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:10:38,610 INFO L225 Difference]: With dead ends: 2807 [2021-11-02 19:10:38,610 INFO L226 Difference]: Without dead ends: 1498 [2021-11-02 19:10:38,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 17538.20ms TimeCoverageRelationStatistics Valid=588, Invalid=1764, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 19:10:38,612 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12226 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39601.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.74ms SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42009.02ms IncrementalHoareTripleChecker+Time [2021-11-02 19:10:38,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12226 Valid, 0 Invalid, 3931 Unknown, 0 Unchecked, 33.74ms Time], IncrementalHoareTripleChecker [231 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 42009.02ms Time] [2021-11-02 19:10:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-11-02 19:10:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1360. [2021-11-02 19:10:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1354 states have (on average 1.3146233382570163) internal successors, (1780), 1359 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 19:10:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1780 transitions. [2021-11-02 19:10:38,765 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1780 transitions. Word has length 156 [2021-11-02 19:10:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:10:38,765 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1780 transitions. [2021-11-02 19:10:38,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.961538461538462) internal successors, (181), 26 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) [2021-11-02 19:10:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1780 transitions. [2021-11-02 19:10:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-02 19:10:38,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:10:38,768 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 5, 5, 5, 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] [2021-11-02 19:10:38,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 19:10:38,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:10:38,986 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-02 19:10:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:10:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash 320373894, now seen corresponding path program 4 times [2021-11-02 19:10:38,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:10:38,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066128683] [2021-11-02 19:10:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:10:38,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:10:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:10:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-02 19:10:40,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:10:40,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066128683] [2021-11-02 19:10:40,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066128683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 19:10:40,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959981115] [2021-11-02 19:10:40,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 19:10:40,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 19:10:40,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:10:40,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 19:10:40,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 19:10:49,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 19:10:49,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 19:10:49,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-02 19:10:49,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 19:11:22,104 WARN L210 SmtUtils]: Spent 32.13s on a formula simplification. DAG size of input: 2634 DAG size of output: 165 [2021-11-02 19:11:22,124 INFO L354 Elim1Store]: treesize reduction 42583, result has 0.8 percent of original size [2021-11-02 19:11:22,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 45 case distinctions, treesize of input 21255448 treesize of output 21122520 Killed by 15