./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-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 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:11:07,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:11:07,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:11:07,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:11:07,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:11:07,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:11:07,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:11:07,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:11:07,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:11:07,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:11:07,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:11:07,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:11:07,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:11:07,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:11:07,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:11:07,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:11:07,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:11:07,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:11:07,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:11:07,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:11:07,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:11:07,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:11:07,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:11:07,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:11:07,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:11:07,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:11:07,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:11:07,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:11:07,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:11:07,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:11:07,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:11:07,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:11:07,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:11:07,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:11:07,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:11:07,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:11:07,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:11:07,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:11:07,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:11:07,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:11:07,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:11:07,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:11:07,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:11:07,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:11:07,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:11:07,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:11:07,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:11:07,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:11:07,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:11:07,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:11:07,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:11:07,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:11:07,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:11:07,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:11:07,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:11:07,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:11:07,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2021-11-07 16:11:07,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:11:07,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:11:07,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:11:07,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:11:07,728 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:11:07,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 16:11:07,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79d4152b/1b4bfce72fe04665904a25fa1cc70d1c/FLAG95fdd9a8c [2021-11-07 16:11:08,389 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:11:08,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 16:11:08,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79d4152b/1b4bfce72fe04665904a25fa1cc70d1c/FLAG95fdd9a8c [2021-11-07 16:11:08,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79d4152b/1b4bfce72fe04665904a25fa1cc70d1c [2021-11-07 16:11:08,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:11:08,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:11:08,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:11:08,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:11:08,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:11:08,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:08" (1/1) ... [2021-11-07 16:11:08,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af7fea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:08, skipping insertion in model container [2021-11-07 16:11:08,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:08" (1/1) ... [2021-11-07 16:11:08,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:11:08,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:11:09,487 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2021-11-07 16:11:09,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:11:09,525 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:11:09,682 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i[145794,145807] [2021-11-07 16:11:09,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:11:09,725 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:11:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09 WrapperNode [2021-11-07 16:11:09,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:11:09,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:11:09,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:11:09,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:11:09,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:09,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:09,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:11:09,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:11:09,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:11:09,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:11:09,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:09,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:09,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:09,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:10,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:10,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:10,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:10,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:11:10,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:11:10,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:11:10,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:11:10,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (1/1) ... [2021-11-07 16:11:10,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:11:10,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:10,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 16:11:10,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 16:11:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:11:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:11:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:11:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:11:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:11:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:11:10,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:11:10,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:11:14,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:11:14,083 INFO L299 CfgBuilder]: Removed 938 assume(true) statements. [2021-11-07 16:11:14,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:14 BoogieIcfgContainer [2021-11-07 16:11:14,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:11:14,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:11:14,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:11:14,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:11:14,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:11:08" (1/3) ... [2021-11-07 16:11:14,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b34f092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:14, skipping insertion in model container [2021-11-07 16:11:14,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:09" (2/3) ... [2021-11-07 16:11:14,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b34f092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:11:14, skipping insertion in model container [2021-11-07 16:11:14,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:11:14" (3/3) ... [2021-11-07 16:11:14,092 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-07 16:11:14,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:11:14,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 16:11:14,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:11:14,148 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 16:11:14,148 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 16:11:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 743 states have (on average 1.4010767160161508) internal successors, (1041), 749 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 16:11:14,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:14,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:14,183 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)] === [2021-11-07 16:11:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash -453684691, now seen corresponding path program 1 times [2021-11-07 16:11:14,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:14,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305753740] [2021-11-07 16:11:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:14,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:11:14,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:14,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305753740] [2021-11-07 16:11:14,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305753740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:14,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:14,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:11:14,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200596015] [2021-11-07 16:11:14,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:14,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:11:14,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:14,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:11:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:11:14,540 INFO L87 Difference]: Start difference. First operand has 750 states, 743 states have (on average 1.4010767160161508) internal successors, (1041), 749 states have internal predecessors, (1041), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:14,613 INFO L93 Difference]: Finished difference Result 1482 states and 2059 transitions. [2021-11-07 16:11:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:11:14,615 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-07 16:11:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:14,630 INFO L225 Difference]: With dead ends: 1482 [2021-11-07 16:11:14,631 INFO L226 Difference]: Without dead ends: 738 [2021-11-07 16:11:14,638 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 [2021-11-07 16:11:14,640 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:14,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:11:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-07 16:11:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2021-11-07 16:11:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 732 states have (on average 1.3743169398907105) internal successors, (1006), 737 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1006 transitions. [2021-11-07 16:11:14,700 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1006 transitions. Word has length 74 [2021-11-07 16:11:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:14,700 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1006 transitions. [2021-11-07 16:11:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1006 transitions. [2021-11-07 16:11:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 16:11:14,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:14,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:11:14,704 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)] === [2021-11-07 16:11:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1696617127, now seen corresponding path program 1 times [2021-11-07 16:11:14,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:14,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911378349] [2021-11-07 16:11:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:14,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:11:14,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:14,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911378349] [2021-11-07 16:11:14,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911378349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:14,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:14,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:14,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282962478] [2021-11-07 16:11:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:14,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:14,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:14,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:14,833 INFO L87 Difference]: Start difference. First operand 738 states and 1006 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:14,927 INFO L93 Difference]: Finished difference Result 1479 states and 2021 transitions. [2021-11-07 16:11:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:14,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-07 16:11:14,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:14,932 INFO L225 Difference]: With dead ends: 1479 [2021-11-07 16:11:14,932 INFO L226 Difference]: Without dead ends: 759 [2021-11-07 16:11:14,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:14,934 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 47 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.45ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:14,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1970 Invalid, 20 Unknown, 0 Unchecked, 7.05ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 66.45ms Time] [2021-11-07 16:11:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-11-07 16:11:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2021-11-07 16:11:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 750 states have (on average 1.3773333333333333) internal successors, (1033), 755 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1033 transitions. [2021-11-07 16:11:14,953 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1033 transitions. Word has length 75 [2021-11-07 16:11:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:14,954 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1033 transitions. [2021-11-07 16:11:14,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:14,955 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1033 transitions. [2021-11-07 16:11:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 16:11:14,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:14,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:14,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:11:14,961 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)] === [2021-11-07 16:11:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1668587877, now seen corresponding path program 1 times [2021-11-07 16:11:14,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:14,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837657135] [2021-11-07 16:11:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:14,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:11:15,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:15,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837657135] [2021-11-07 16:11:15,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837657135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:15,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:15,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:15,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486284697] [2021-11-07 16:11:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:15,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:15,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:15,173 INFO L87 Difference]: Start difference. First operand 756 states and 1033 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:15,936 INFO L93 Difference]: Finished difference Result 1527 states and 2097 transitions. [2021-11-07 16:11:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:15,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-07 16:11:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:15,940 INFO L225 Difference]: With dead ends: 1527 [2021-11-07 16:11:15,940 INFO L226 Difference]: Without dead ends: 789 [2021-11-07 16:11:15,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:15,942 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 53 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 695.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 739.40ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:15,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1988 Invalid, 30 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 739.40ms Time] [2021-11-07 16:11:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-07 16:11:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 786. [2021-11-07 16:11:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 780 states have (on average 1.3807692307692307) internal successors, (1077), 785 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1077 transitions. [2021-11-07 16:11:15,961 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1077 transitions. Word has length 101 [2021-11-07 16:11:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:15,962 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1077 transitions. [2021-11-07 16:11:15,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1077 transitions. [2021-11-07 16:11:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 16:11:15,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:15,969 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] [2021-11-07 16:11:15,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:11:15,969 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)] === [2021-11-07 16:11:15,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1271589435, now seen corresponding path program 1 times [2021-11-07 16:11:15,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:15,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223002424] [2021-11-07 16:11:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:15,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:11:16,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:16,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223002424] [2021-11-07 16:11:16,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223002424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:16,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210291190] [2021-11-07 16:11:16,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:16,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:16,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,101 INFO L87 Difference]: Start difference. First operand 786 states and 1077 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:16,157 INFO L93 Difference]: Finished difference Result 2320 states and 3182 transitions. [2021-11-07 16:11:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:16,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 115 [2021-11-07 16:11:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:16,162 INFO L225 Difference]: With dead ends: 2320 [2021-11-07 16:11:16,163 INFO L226 Difference]: Without dead ends: 1552 [2021-11-07 16:11:16,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,167 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 978 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.84ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:16,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 2076 Invalid, 6 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 20.84ms Time] [2021-11-07 16:11:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-11-07 16:11:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 787. [2021-11-07 16:11:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 781 states have (on average 1.380281690140845) internal successors, (1078), 786 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1078 transitions. [2021-11-07 16:11:16,192 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1078 transitions. Word has length 115 [2021-11-07 16:11:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:16,194 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 1078 transitions. [2021-11-07 16:11:16,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1078 transitions. [2021-11-07 16:11:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 16:11:16,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:16,195 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] [2021-11-07 16:11:16,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:11:16,196 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)] === [2021-11-07 16:11:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1069765501, now seen corresponding path program 1 times [2021-11-07 16:11:16,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:16,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099881274] [2021-11-07 16:11:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:16,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:16,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:16,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099881274] [2021-11-07 16:11:16,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099881274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:16,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:16,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:16,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019685392] [2021-11-07 16:11:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:16,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:16,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,348 INFO L87 Difference]: Start difference. First operand 787 states and 1078 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:16,381 INFO L93 Difference]: Finished difference Result 1558 states and 2137 transitions. [2021-11-07 16:11:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 16:11:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:16,386 INFO L225 Difference]: With dead ends: 1558 [2021-11-07 16:11:16,386 INFO L226 Difference]: Without dead ends: 789 [2021-11-07 16:11:16,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,389 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 0 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.46ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:16,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1998 Invalid, 14 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 14.46ms Time] [2021-11-07 16:11:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-07 16:11:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2021-11-07 16:11:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 783 states have (on average 1.3793103448275863) internal successors, (1080), 788 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1080 transitions. [2021-11-07 16:11:16,409 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1080 transitions. Word has length 115 [2021-11-07 16:11:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:16,411 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1080 transitions. [2021-11-07 16:11:16,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1080 transitions. [2021-11-07 16:11:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 16:11:16,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:16,412 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] [2021-11-07 16:11:16,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:11:16,414 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)] === [2021-11-07 16:11:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1462792511, now seen corresponding path program 1 times [2021-11-07 16:11:16,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:16,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88695126] [2021-11-07 16:11:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:16,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:16,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:16,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88695126] [2021-11-07 16:11:16,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88695126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:16,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:16,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:16,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678591486] [2021-11-07 16:11:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:16,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:16,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,584 INFO L87 Difference]: Start difference. First operand 789 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:16,831 INFO L93 Difference]: Finished difference Result 2247 states and 3092 transitions. [2021-11-07 16:11:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 16:11:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:16,838 INFO L225 Difference]: With dead ends: 2247 [2021-11-07 16:11:16,838 INFO L226 Difference]: Without dead ends: 1476 [2021-11-07 16:11:16,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,840 INFO L933 BasicCegarLoop]: 1767 mSDtfsCounter, 863 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.54ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.89ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:16,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 2731 Invalid, 76 Unknown, 0 Unchecked, 4.54ms Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 203.89ms Time] [2021-11-07 16:11:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-07 16:11:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2021-11-07 16:11:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 789 states have (on average 1.376425855513308) internal successors, (1086), 794 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1086 transitions. [2021-11-07 16:11:16,857 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1086 transitions. Word has length 115 [2021-11-07 16:11:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:16,858 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 1086 transitions. [2021-11-07 16:11:16,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1086 transitions. [2021-11-07 16:11:16,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 16:11:16,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:16,860 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, 1, 1, 1] [2021-11-07 16:11:16,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:11:16,861 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)] === [2021-11-07 16:11:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 556019336, now seen corresponding path program 1 times [2021-11-07 16:11:16,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:16,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569832470] [2021-11-07 16:11:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:16,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 16:11:16,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:16,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569832470] [2021-11-07 16:11:16,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569832470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:16,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:16,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:16,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970995101] [2021-11-07 16:11:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:16,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:16,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:16,960 INFO L87 Difference]: Start difference. First operand 795 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:17,063 INFO L93 Difference]: Finished difference Result 2229 states and 3074 transitions. [2021-11-07 16:11:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-07 16:11:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:17,068 INFO L225 Difference]: With dead ends: 2229 [2021-11-07 16:11:17,068 INFO L226 Difference]: Without dead ends: 1452 [2021-11-07 16:11:17,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:17,070 INFO L933 BasicCegarLoop]: 1747 mSDtfsCounter, 822 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.42ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:17,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 2717 Invalid, 58 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 67.42ms Time] [2021-11-07 16:11:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-11-07 16:11:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 831. [2021-11-07 16:11:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 825 states have (on average 1.3745454545454545) internal successors, (1134), 830 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1134 transitions. [2021-11-07 16:11:17,086 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1134 transitions. Word has length 119 [2021-11-07 16:11:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:17,086 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1134 transitions. [2021-11-07 16:11:17,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1134 transitions. [2021-11-07 16:11:17,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 16:11:17,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:17,088 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:17,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:11:17,089 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)] === [2021-11-07 16:11:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1859190524, now seen corresponding path program 1 times [2021-11-07 16:11:17,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:17,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206531757] [2021-11-07 16:11:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:17,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:17,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:17,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206531757] [2021-11-07 16:11:17,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206531757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:17,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554238235] [2021-11-07 16:11:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:17,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:17,192 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) [2021-11-07 16:11:17,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 16:11:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:17,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:11:17,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:17,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:11:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:18,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554238235] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:11:18,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:11:18,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 16:11:18,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155696145] [2021-11-07 16:11:18,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:11:18,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:11:18,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:11:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:18,019 INFO L87 Difference]: Start difference. First operand 831 states and 1134 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:18,565 INFO L93 Difference]: Finished difference Result 4398 states and 6071 transitions. [2021-11-07 16:11:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:11:18,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 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 124 [2021-11-07 16:11:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:18,578 INFO L225 Difference]: With dead ends: 4398 [2021-11-07 16:11:18,578 INFO L226 Difference]: Without dead ends: 3585 [2021-11-07 16:11:18,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.36ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:18,582 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 5166 mSDsluCounter, 5176 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 6905 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.50ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.27ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:18,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 6905 Invalid, 223 Unknown, 0 Unchecked, 11.50ms Time], IncrementalHoareTripleChecker [55 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 410.27ms Time] [2021-11-07 16:11:18,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-11-07 16:11:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 1065. [2021-11-07 16:11:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1059 states have (on average 1.348441926345609) internal successors, (1428), 1064 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1428 transitions. [2021-11-07 16:11:18,615 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1428 transitions. Word has length 124 [2021-11-07 16:11:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:18,615 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1428 transitions. [2021-11-07 16:11:18,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1428 transitions. [2021-11-07 16:11:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 16:11:18,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:18,618 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:18,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:18,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:18,832 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)] === [2021-11-07 16:11:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1104694841, now seen corresponding path program 1 times [2021-11-07 16:11:18,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:18,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379414232] [2021-11-07 16:11:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:18,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 16:11:18,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:18,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379414232] [2021-11-07 16:11:18,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379414232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:18,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:18,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:11:18,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359557406] [2021-11-07 16:11:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:18,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:11:18,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:11:18,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:11:18,929 INFO L87 Difference]: Start difference. First operand 1065 states and 1428 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:18,996 INFO L93 Difference]: Finished difference Result 2259 states and 3046 transitions. [2021-11-07 16:11:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:11:18,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 136 [2021-11-07 16:11:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:19,001 INFO L225 Difference]: With dead ends: 2259 [2021-11-07 16:11:19,001 INFO L226 Difference]: Without dead ends: 1212 [2021-11-07 16:11:19,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:11:19,004 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 135 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.74ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:19,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 3252 Invalid, 41 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 36.74ms Time] [2021-11-07 16:11:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-07 16:11:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1069. [2021-11-07 16:11:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1063 states have (on average 1.3471307619943556) internal successors, (1432), 1068 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1432 transitions. [2021-11-07 16:11:19,028 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1432 transitions. Word has length 136 [2021-11-07 16:11:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1432 transitions. [2021-11-07 16:11:19,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1432 transitions. [2021-11-07 16:11:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 16:11:19,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:19,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:19,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:11:19,031 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)] === [2021-11-07 16:11:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782625, now seen corresponding path program 1 times [2021-11-07 16:11:19,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:19,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442569205] [2021-11-07 16:11:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:19,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 16:11:19,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:19,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442569205] [2021-11-07 16:11:19,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442569205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:19,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:19,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:11:19,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741989834] [2021-11-07 16:11:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:19,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:11:19,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:11:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:11:19,143 INFO L87 Difference]: Start difference. First operand 1069 states and 1432 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:19,208 INFO L93 Difference]: Finished difference Result 2267 states and 3054 transitions. [2021-11-07 16:11:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:11:19,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-07 16:11:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:19,213 INFO L225 Difference]: With dead ends: 2267 [2021-11-07 16:11:19,213 INFO L226 Difference]: Without dead ends: 1216 [2021-11-07 16:11:19,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:11:19,216 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 135 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.75ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:19,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 3252 Invalid, 41 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 34.75ms Time] [2021-11-07 16:11:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-07 16:11:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1069. [2021-11-07 16:11:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1063 states have (on average 1.3471307619943556) internal successors, (1432), 1068 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1432 transitions. [2021-11-07 16:11:19,241 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1432 transitions. Word has length 143 [2021-11-07 16:11:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:19,242 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1432 transitions. [2021-11-07 16:11:19,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1432 transitions. [2021-11-07 16:11:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 16:11:19,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:19,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:19,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:11:19,245 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)] === [2021-11-07 16:11:19,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash -269565133, now seen corresponding path program 1 times [2021-11-07 16:11:19,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:19,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083903842] [2021-11-07 16:11:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:19,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:19,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:19,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083903842] [2021-11-07 16:11:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083903842] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:19,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791894515] [2021-11-07 16:11:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:19,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:19,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:19,432 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) [2021-11-07 16:11:19,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 16:11:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:19,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 16:11:19,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:20,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:11:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 16:11:20,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791894515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:11:20,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:11:20,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2021-11-07 16:11:20,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826077901] [2021-11-07 16:11:20,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:11:20,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 16:11:20,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 16:11:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:20,232 INFO L87 Difference]: Start difference. First operand 1069 states and 1432 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:20,879 INFO L93 Difference]: Finished difference Result 5377 states and 7354 transitions. [2021-11-07 16:11:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 16:11:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 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 [2021-11-07 16:11:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:20,898 INFO L225 Difference]: With dead ends: 5377 [2021-11-07 16:11:20,898 INFO L226 Difference]: Without dead ends: 4326 [2021-11-07 16:11:20,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 14.35ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:20,903 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 6871 mSDsluCounter, 6015 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 429.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6871 SdHoareTripleChecker+Valid, 7744 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.98ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 499.75ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:20,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6871 Valid, 7744 Invalid, 251 Unknown, 0 Unchecked, 11.98ms Time], IncrementalHoareTripleChecker [53 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 499.75ms Time] [2021-11-07 16:11:20,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-11-07 16:11:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 1153. [2021-11-07 16:11:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1147 states have (on average 1.3426329555361813) internal successors, (1540), 1152 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1540 transitions. [2021-11-07 16:11:20,956 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1540 transitions. Word has length 144 [2021-11-07 16:11:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:20,956 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1540 transitions. [2021-11-07 16:11:20,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1540 transitions. [2021-11-07 16:11:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 16:11:20,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:20,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:21,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:21,184 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 [2021-11-07 16:11:21,184 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)] === [2021-11-07 16:11:21,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash 251199436, now seen corresponding path program 2 times [2021-11-07 16:11:21,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:21,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739763292] [2021-11-07 16:11:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:21,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:21,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:21,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739763292] [2021-11-07 16:11:21,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739763292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:21,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:11:21,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:11:21,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437160783] [2021-11-07 16:11:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:21,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:21,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:21,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:21,375 INFO L87 Difference]: Start difference. First operand 1153 states and 1540 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:21,400 INFO L93 Difference]: Finished difference Result 2292 states and 3063 transitions. [2021-11-07 16:11:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-07 16:11:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:21,404 INFO L225 Difference]: With dead ends: 2292 [2021-11-07 16:11:21,405 INFO L226 Difference]: Without dead ends: 1157 [2021-11-07 16:11:21,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:11:21,407 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.30ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:21,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2004 Invalid, 8 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 7.30ms Time] [2021-11-07 16:11:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-07 16:11:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2021-11-07 16:11:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1151 states have (on average 1.3414422241529105) internal successors, (1544), 1156 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1544 transitions. [2021-11-07 16:11:21,433 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1544 transitions. Word has length 148 [2021-11-07 16:11:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:21,433 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1544 transitions. [2021-11-07 16:11:21,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1544 transitions. [2021-11-07 16:11:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 16:11:21,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:21,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:21,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 16:11:21,437 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)] === [2021-11-07 16:11:21,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 912887847, now seen corresponding path program 1 times [2021-11-07 16:11:21,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:21,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758996691] [2021-11-07 16:11:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:21,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:21,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:21,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758996691] [2021-11-07 16:11:21,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758996691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:21,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329147313] [2021-11-07 16:11:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:21,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:21,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:21,567 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) [2021-11-07 16:11:21,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 16:11:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:22,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 16:11:22,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 16:11:22,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:22,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329147313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:22,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:22,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-07 16:11:22,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939328713] [2021-11-07 16:11:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:22,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:11:22,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:11:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 16:11:22,307 INFO L87 Difference]: Start difference. First operand 1157 states and 1544 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 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) [2021-11-07 16:11:22,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:22,543 INFO L93 Difference]: Finished difference Result 2546 states and 3423 transitions. [2021-11-07 16:11:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 16:11:22,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 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 150 [2021-11-07 16:11:22,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:22,547 INFO L225 Difference]: With dead ends: 2546 [2021-11-07 16:11:22,547 INFO L226 Difference]: Without dead ends: 1407 [2021-11-07 16:11:22,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.46ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-07 16:11:22,550 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 928 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.31ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 157.64ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:22,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 4056 Invalid, 190 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [8 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 157.64ms Time] [2021-11-07 16:11:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2021-11-07 16:11:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1163. [2021-11-07 16:11:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1157 states have (on average 1.3396715643906656) internal successors, (1550), 1162 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1550 transitions. [2021-11-07 16:11:22,571 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1550 transitions. Word has length 150 [2021-11-07 16:11:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:22,571 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1550 transitions. [2021-11-07 16:11:22,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 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) [2021-11-07 16:11:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1550 transitions. [2021-11-07 16:11:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 16:11:22,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:22,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:22,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:22,783 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 [2021-11-07 16:11:22,783 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)] === [2021-11-07 16:11:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1613781170, now seen corresponding path program 1 times [2021-11-07 16:11:22,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:22,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497335135] [2021-11-07 16:11:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:22,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:22,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:22,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497335135] [2021-11-07 16:11:22,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497335135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:22,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730188152] [2021-11-07 16:11:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:22,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:22,896 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) [2021-11-07 16:11:22,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 16:11:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:24,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 16:11:24,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 16:11:24,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:24,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730188152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:24,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:24,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 16:11:24,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224287127] [2021-11-07 16:11:24,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:24,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:11:24,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:11:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:24,357 INFO L87 Difference]: Start difference. First operand 1163 states and 1550 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:24,608 INFO L93 Difference]: Finished difference Result 3575 states and 4788 transitions. [2021-11-07 16:11:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:11:24,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 151 [2021-11-07 16:11:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:24,615 INFO L225 Difference]: With dead ends: 3575 [2021-11-07 16:11:24,615 INFO L226 Difference]: Without dead ends: 2430 [2021-11-07 16:11:24,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.97ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-07 16:11:24,618 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 2003 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.51ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:24,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 4288 Invalid, 230 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 162.51ms Time] [2021-11-07 16:11:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-11-07 16:11:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1169. [2021-11-07 16:11:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1163 states have (on average 1.3379191745485812) internal successors, (1556), 1168 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1556 transitions. [2021-11-07 16:11:24,652 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1556 transitions. Word has length 151 [2021-11-07 16:11:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:24,652 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1556 transitions. [2021-11-07 16:11:24,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1556 transitions. [2021-11-07 16:11:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 16:11:24,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:24,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:24,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:24,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:24,875 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)] === [2021-11-07 16:11:24,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash -720066253, now seen corresponding path program 1 times [2021-11-07 16:11:24,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:24,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727660458] [2021-11-07 16:11:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:24,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:25,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:25,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727660458] [2021-11-07 16:11:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727660458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:25,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272846742] [2021-11-07 16:11:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:25,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:25,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:25,048 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) [2021-11-07 16:11:25,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 16:11:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:26,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 16:11:26,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 16:11:26,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:26,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272846742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:26,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:26,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 16:11:26,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081956420] [2021-11-07 16:11:26,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:26,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:11:26,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:26,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:11:26,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:26,456 INFO L87 Difference]: Start difference. First operand 1169 states and 1556 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:26,773 INFO L93 Difference]: Finished difference Result 3437 states and 4612 transitions. [2021-11-07 16:11:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 16:11:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 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 152 [2021-11-07 16:11:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:26,780 INFO L225 Difference]: With dead ends: 3437 [2021-11-07 16:11:26,780 INFO L226 Difference]: Without dead ends: 2286 [2021-11-07 16:11:26,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.21ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 16:11:26,784 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 2193 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.44ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:26,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 4877 Invalid, 281 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [21 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 216.44ms Time] [2021-11-07 16:11:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2021-11-07 16:11:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 1175. [2021-11-07 16:11:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1169 states have (on average 1.3361847733105219) internal successors, (1562), 1174 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1562 transitions. [2021-11-07 16:11:26,816 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1562 transitions. Word has length 152 [2021-11-07 16:11:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:26,817 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1562 transitions. [2021-11-07 16:11:26,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1562 transitions. [2021-11-07 16:11:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 16:11:26,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:26,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:26,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:27,031 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,SelfDestructingSolverStorable14 [2021-11-07 16:11:27,032 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)] === [2021-11-07 16:11:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1077379303, now seen corresponding path program 1 times [2021-11-07 16:11:27,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:27,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169093655] [2021-11-07 16:11:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:27,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:27,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:27,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169093655] [2021-11-07 16:11:27,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169093655] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:27,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355790769] [2021-11-07 16:11:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:27,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:27,169 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) [2021-11-07 16:11:27,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 16:11:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:28,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2062 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 16:11:28,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 16:11:28,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:28,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355790769] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:28,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:28,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 16:11:28,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970272100] [2021-11-07 16:11:28,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:28,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:11:28,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:28,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:11:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 16:11:28,444 INFO L87 Difference]: Start difference. First operand 1175 states and 1562 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 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) [2021-11-07 16:11:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:28,531 INFO L93 Difference]: Finished difference Result 2674 states and 3585 transitions. [2021-11-07 16:11:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:11:28,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 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 153 [2021-11-07 16:11:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:28,536 INFO L225 Difference]: With dead ends: 2674 [2021-11-07 16:11:28,536 INFO L226 Difference]: Without dead ends: 1517 [2021-11-07 16:11:28,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.13ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:28,538 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 407 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:28,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 3426 Invalid, 41 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 46.85ms Time] [2021-11-07 16:11:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-11-07 16:11:28,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1179. [2021-11-07 16:11:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1173 states have (on average 1.3350383631713556) internal successors, (1566), 1178 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1566 transitions. [2021-11-07 16:11:28,566 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1566 transitions. Word has length 153 [2021-11-07 16:11:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:28,566 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1566 transitions. [2021-11-07 16:11:28,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 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) [2021-11-07 16:11:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1566 transitions. [2021-11-07 16:11:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-07 16:11:28,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:28,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:28,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:28,783 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,SelfDestructingSolverStorable15 [2021-11-07 16:11:28,784 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)] === [2021-11-07 16:11:28,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -572264394, now seen corresponding path program 1 times [2021-11-07 16:11:28,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:28,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157482646] [2021-11-07 16:11:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:28,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:28,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:28,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157482646] [2021-11-07 16:11:28,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157482646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:28,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307260285] [2021-11-07 16:11:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:28,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:28,921 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) [2021-11-07 16:11:28,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 16:11:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:30,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 16:11:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 16:11:30,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:30,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307260285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:30,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:30,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 16:11:30,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469645826] [2021-11-07 16:11:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:30,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:11:30,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:11:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:30,789 INFO L87 Difference]: Start difference. First operand 1179 states and 1566 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:31,066 INFO L93 Difference]: Finished difference Result 3045 states and 4076 transitions. [2021-11-07 16:11:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 16:11:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 [2021-11-07 16:11:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:31,072 INFO L225 Difference]: With dead ends: 3045 [2021-11-07 16:11:31,073 INFO L226 Difference]: Without dead ends: 1884 [2021-11-07 16:11:31,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.97ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 16:11:31,075 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 1155 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.49ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:31,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 4627 Invalid, 256 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [18 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 199.49ms Time] [2021-11-07 16:11:31,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-11-07 16:11:31,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1185. [2021-11-07 16:11:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1179 states have (on average 1.3333333333333333) internal successors, (1572), 1184 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1572 transitions. [2021-11-07 16:11:31,106 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1572 transitions. Word has length 156 [2021-11-07 16:11:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:31,106 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1572 transitions. [2021-11-07 16:11:31,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1572 transitions. [2021-11-07 16:11:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 16:11:31,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:31,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:31,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:31,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:31,323 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)] === [2021-11-07 16:11:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2047593680, now seen corresponding path program 1 times [2021-11-07 16:11:31,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:31,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619549628] [2021-11-07 16:11:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:31,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:31,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:31,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619549628] [2021-11-07 16:11:31,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619549628] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:31,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445905920] [2021-11-07 16:11:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:31,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:31,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:31,457 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) [2021-11-07 16:11:31,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 16:11:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:32,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 16:11:32,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-07 16:11:33,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:33,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445905920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:33,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:33,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 16:11:33,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351124871] [2021-11-07 16:11:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:33,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:33,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:33,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:33,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:11:33,126 INFO L87 Difference]: Start difference. First operand 1185 states and 1572 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:33,167 INFO L93 Difference]: Finished difference Result 2467 states and 3288 transitions. [2021-11-07 16:11:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 157 [2021-11-07 16:11:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:33,172 INFO L225 Difference]: With dead ends: 2467 [2021-11-07 16:11:33,172 INFO L226 Difference]: Without dead ends: 1300 [2021-11-07 16:11:33,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.22ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:11:33,174 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 91 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.81ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:33,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2091 Invalid, 14 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 16.81ms Time] [2021-11-07 16:11:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-07 16:11:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1187. [2021-11-07 16:11:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1181 states have (on average 1.3327688399661304) internal successors, (1574), 1186 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1574 transitions. [2021-11-07 16:11:33,201 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1574 transitions. Word has length 157 [2021-11-07 16:11:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:33,202 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1574 transitions. [2021-11-07 16:11:33,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1574 transitions. [2021-11-07 16:11:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 16:11:33,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:33,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:33,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:33,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 16:11:33,419 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)] === [2021-11-07 16:11:33,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1807353934, now seen corresponding path program 1 times [2021-11-07 16:11:33,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:33,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590700620] [2021-11-07 16:11:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:33,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:33,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:33,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590700620] [2021-11-07 16:11:33,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590700620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:33,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661544461] [2021-11-07 16:11:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:33,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:33,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:33,540 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) [2021-11-07 16:11:33,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 16:11:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:35,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 16:11:35,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:35,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:11:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:35,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661544461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:11:35,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:11:35,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 16:11:35,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563624050] [2021-11-07 16:11:35,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:11:35,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 16:11:35,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 16:11:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:11:35,924 INFO L87 Difference]: Start difference. First operand 1187 states and 1574 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:35,979 INFO L93 Difference]: Finished difference Result 2368 states and 3143 transitions. [2021-11-07 16:11:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:11:35,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 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 157 [2021-11-07 16:11:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:35,985 INFO L225 Difference]: With dead ends: 2368 [2021-11-07 16:11:35,986 INFO L226 Difference]: Without dead ends: 1199 [2021-11-07 16:11:35,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 22.22ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:35,988 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 7 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.48ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:35,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4010 Invalid, 35 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [13 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 26.48ms Time] [2021-11-07 16:11:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-07 16:11:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2021-11-07 16:11:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1193 states have (on average 1.3294216261525567) internal successors, (1586), 1198 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1586 transitions. [2021-11-07 16:11:36,021 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1586 transitions. Word has length 157 [2021-11-07 16:11:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:36,021 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1586 transitions. [2021-11-07 16:11:36,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1586 transitions. [2021-11-07 16:11:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-07 16:11:36,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:36,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:36,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:36,238 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)] === [2021-11-07 16:11:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash -434245119, now seen corresponding path program 2 times [2021-11-07 16:11:36,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:36,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763758461] [2021-11-07 16:11:36,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:36,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 16:11:36,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:36,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763758461] [2021-11-07 16:11:36,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763758461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:36,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629162345] [2021-11-07 16:11:36,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:11:36,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:36,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:36,391 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:11:36,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 16:11:37,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 16:11:37,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:11:37,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 16:11:37,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-07 16:11:37,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629162345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:37,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:37,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-07 16:11:37,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091578175] [2021-11-07 16:11:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:37,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:37,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:37,618 INFO L87 Difference]: Start difference. First operand 1199 states and 1586 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:37,687 INFO L93 Difference]: Finished difference Result 2394 states and 3169 transitions. [2021-11-07 16:11:37,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:37,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 163 [2021-11-07 16:11:37,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:37,689 INFO L225 Difference]: With dead ends: 2394 [2021-11-07 16:11:37,690 INFO L226 Difference]: Without dead ends: 1202 [2021-11-07 16:11:37,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.22ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:37,691 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 0 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.37ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:37,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1982 Invalid, 31 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 49.37ms Time] [2021-11-07 16:11:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-07 16:11:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2021-11-07 16:11:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1196 states have (on average 1.3285953177257526) internal successors, (1589), 1201 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:37,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1589 transitions. [2021-11-07 16:11:37,714 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1589 transitions. Word has length 163 [2021-11-07 16:11:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:37,715 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1589 transitions. [2021-11-07 16:11:37,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1589 transitions. [2021-11-07 16:11:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-07 16:11:37,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:37,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:37,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:37,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:37,942 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 16:11:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:37,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1851118755, now seen corresponding path program 1 times [2021-11-07 16:11:37,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:37,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053117998] [2021-11-07 16:11:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:37,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-07 16:11:38,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:38,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053117998] [2021-11-07 16:11:38,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053117998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:38,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111936244] [2021-11-07 16:11:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:38,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:38,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:38,089 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:11:38,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 16:11:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:42,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 16:11:42,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-07 16:11:42,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:11:42,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111936244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:11:42,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:42,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-07 16:11:42,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790963078] [2021-11-07 16:11:42,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:11:42,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:11:42,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:42,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:11:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:42,578 INFO L87 Difference]: Start difference. First operand 1202 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:42,627 INFO L93 Difference]: Finished difference Result 2402 states and 3177 transitions. [2021-11-07 16:11:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:11:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-07 16:11:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:42,630 INFO L225 Difference]: With dead ends: 2402 [2021-11-07 16:11:42,630 INFO L226 Difference]: Without dead ends: 1204 [2021-11-07 16:11:42,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.45ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:11:42,632 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 0 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.59ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:42,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1983 Invalid, 29 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 28.59ms Time] [2021-11-07 16:11:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-11-07 16:11:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2021-11-07 16:11:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1198 states have (on average 1.3280467445742905) internal successors, (1591), 1203 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1591 transitions. [2021-11-07 16:11:42,667 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1591 transitions. Word has length 166 [2021-11-07 16:11:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:42,667 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 1591 transitions. [2021-11-07 16:11:42,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1591 transitions. [2021-11-07 16:11:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 16:11:42,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:42,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:42,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:42,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-07 16:11:42,895 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 16:11:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1059600405, now seen corresponding path program 1 times [2021-11-07 16:11:42,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:42,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225983657] [2021-11-07 16:11:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:42,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 16:11:43,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:43,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225983657] [2021-11-07 16:11:43,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225983657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:43,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371548677] [2021-11-07 16:11:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:43,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:43,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:11:43,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 16:11:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:46,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 16:11:46,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:11:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 16:11:46,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:11:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 16:11:46,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371548677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:11:46,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:11:46,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-07 16:11:46,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054871769] [2021-11-07 16:11:46,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:11:46,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 16:11:46,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:46,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 16:11:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-07 16:11:46,825 INFO L87 Difference]: Start difference. First operand 1204 states and 1591 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:11:47,118 INFO L93 Difference]: Finished difference Result 2409 states and 3190 transitions. [2021-11-07 16:11:47,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 16:11:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-11-07 16:11:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:11:47,130 INFO L225 Difference]: With dead ends: 2409 [2021-11-07 16:11:47,130 INFO L226 Difference]: Without dead ends: 1228 [2021-11-07 16:11:47,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 226.79ms TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-07 16:11:47,133 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 31 mSDsluCounter, 6040 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7052 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.46ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:47,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 7052 Invalid, 132 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [50 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 115.46ms Time] [2021-11-07 16:11:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-07 16:11:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1228. [2021-11-07 16:11:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1222 states have (on average 1.3216039279869067) internal successors, (1615), 1227 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1615 transitions. [2021-11-07 16:11:47,166 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1615 transitions. Word has length 168 [2021-11-07 16:11:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:11:47,166 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 1615 transitions. [2021-11-07 16:11:47,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1615 transitions. [2021-11-07 16:11:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-07 16:11:47,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:11:47,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:11:47,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 16:11:47,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 16:11:47,379 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 16:11:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:11:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash -819660855, now seen corresponding path program 2 times [2021-11-07 16:11:47,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:11:47,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208348871] [2021-11-07 16:11:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:11:47,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:11:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:11:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 16:11:47,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:11:47,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208348871] [2021-11-07 16:11:47,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208348871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:11:47,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111491665] [2021-11-07 16:11:47,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 16:11:47,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:11:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:47,626 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:11:47,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 16:12:59,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 16:12:59,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:12:59,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 16:12:59,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:12:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-07 16:12:59,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:13:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-07 16:13:00,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111491665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:13:00,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:13:00,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 17 [2021-11-07 16:13:00,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149713592] [2021-11-07 16:13:00,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:13:00,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 16:13:00,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:13:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 16:13:00,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-07 16:13:00,259 INFO L87 Difference]: Start difference. First operand 1228 states and 1615 transitions. Second operand has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:13:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:13:00,592 INFO L93 Difference]: Finished difference Result 2472 states and 3264 transitions. [2021-11-07 16:13:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 16:13:00,592 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 0 states have call successors, (0), 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 180 [2021-11-07 16:13:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:13:00,594 INFO L225 Difference]: With dead ends: 2472 [2021-11-07 16:13:00,595 INFO L226 Difference]: Without dead ends: 1249 [2021-11-07 16:13:00,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 150.58ms TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-07 16:13:00,597 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 14 mSDsluCounter, 10084 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11097 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 276.97ms IncrementalHoareTripleChecker+Time [2021-11-07 16:13:00,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 11097 Invalid, 506 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [71 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 276.97ms Time] [2021-11-07 16:13:00,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-07 16:13:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1249. [2021-11-07 16:13:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 1243 states have (on average 1.3161705551086083) internal successors, (1636), 1248 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:13:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1636 transitions. [2021-11-07 16:13:00,624 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1636 transitions. Word has length 180 [2021-11-07 16:13:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:13:00,624 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1636 transitions. [2021-11-07 16:13:00,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:13:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1636 transitions. [2021-11-07 16:13:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-07 16:13:00,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:13:00,627 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:13:00,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 16:13:00,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 16:13:00,843 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 16:13:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:13:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1141471332, now seen corresponding path program 3 times [2021-11-07 16:13:00,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:13:00,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516834042] [2021-11-07 16:13:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:13:00,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:13:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:13:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 16:13:01,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:13:01,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516834042] [2021-11-07 16:13:01,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516834042] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:13:01,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101421470] [2021-11-07 16:13:01,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 16:13:01,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:13:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:13:01,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:13:01,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 16:13:38,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 16:13:38,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:13:38,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 16:13:38,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:13:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-07 16:13:38,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:13:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-07 16:13:38,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101421470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:13:38,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:13:38,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2021-11-07 16:13:38,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239959932] [2021-11-07 16:13:38,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:13:38,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 16:13:38,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:13:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 16:13:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-07 16:13:38,888 INFO L87 Difference]: Start difference. First operand 1249 states and 1636 transitions. Second operand has 20 states, 20 states have (on average 11.25) internal successors, (225), 20 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:13:39,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:13:39,795 INFO L93 Difference]: Finished difference Result 2505 states and 3295 transitions. [2021-11-07 16:13:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 16:13:39,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.25) internal successors, (225), 20 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2021-11-07 16:13:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:13:39,797 INFO L225 Difference]: With dead ends: 2505 [2021-11-07 16:13:39,797 INFO L226 Difference]: Without dead ends: 1269 [2021-11-07 16:13:39,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 470.65ms TimeCoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 16:13:39,799 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 1019 mSDsluCounter, 8152 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 473.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 9167 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.95ms SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 543.68ms IncrementalHoareTripleChecker+Time [2021-11-07 16:13:39,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 9167 Invalid, 669 Unknown, 0 Unchecked, 6.95ms Time], IncrementalHoareTripleChecker [152 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 543.68ms Time] [2021-11-07 16:13:39,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-11-07 16:13:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2021-11-07 16:13:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1263 states have (on average 1.3111638954869358) internal successors, (1656), 1268 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:13:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1656 transitions. [2021-11-07 16:13:39,831 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1656 transitions. Word has length 191 [2021-11-07 16:13:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:13:39,831 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1656 transitions. [2021-11-07 16:13:39,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.25) internal successors, (225), 20 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:13:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1656 transitions. [2021-11-07 16:13:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 16:13:39,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:13:39,834 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:13:39,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 16:13:40,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:13:40,047 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 16:13:40,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:13:40,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1666812567, now seen corresponding path program 4 times [2021-11-07 16:13:40,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:13:40,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646554874] [2021-11-07 16:13:40,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:13:40,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:13:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:13:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-07 16:13:40,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:13:40,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646554874] [2021-11-07 16:13:40,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646554874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:13:40,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440436325] [2021-11-07 16:13:40,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 16:13:40,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:13:40,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:13:40,317 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:13:40,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 16:13:45,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 16:13:45,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 16:13:45,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 16:13:45,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:13:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-07 16:13:45,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 16:13:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-07 16:13:46,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440436325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 16:13:46,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 16:13:46,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2021-11-07 16:13:46,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104600702] [2021-11-07 16:13:46,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 16:13:46,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 16:13:46,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:13:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 16:13:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2021-11-07 16:13:46,105 INFO L87 Difference]: Start difference. First operand 1269 states and 1656 transitions. Second operand has 29 states, 29 states have (on average 8.10344827586207) internal successors, (235), 29 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:14:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:14:01,348 INFO L93 Difference]: Finished difference Result 3805 states and 5006 transitions. [2021-11-07 16:14:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 16:14:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.10344827586207) internal successors, (235), 29 states have internal predecessors, (235), 0 states have call successors, (0), 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 205 [2021-11-07 16:14:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:14:01,352 INFO L225 Difference]: With dead ends: 3805 [2021-11-07 16:14:01,352 INFO L226 Difference]: Without dead ends: 2544 [2021-11-07 16:14:01,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 8228.64ms TimeCoverageRelationStatistics Valid=500, Invalid=4192, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 16:14:01,356 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 2069 mSDsluCounter, 33054 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6893.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 35067 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.80ms SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7203.42ms IncrementalHoareTripleChecker+Time [2021-11-07 16:14:01,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 35067 Invalid, 2224 Unknown, 0 Unchecked, 22.80ms Time], IncrementalHoareTripleChecker [421 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 7203.42ms Time] [2021-11-07 16:14:01,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-07 16:14:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1319. [2021-11-07 16:14:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1313 states have (on average 1.306930693069307) internal successors, (1716), 1318 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:14:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1716 transitions. [2021-11-07 16:14:01,396 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1716 transitions. Word has length 205 [2021-11-07 16:14:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:14:01,396 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 1716 transitions. [2021-11-07 16:14:01,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.10344827586207) internal successors, (235), 29 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:14:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1716 transitions. [2021-11-07 16:14:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 16:14:01,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:14:01,398 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 8, 8, 8, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:14:01,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 16:14:01,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:14:01,612 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 16:14:01,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:14:01,612 INFO L85 PathProgramCache]: Analyzing trace with hash -833093778, now seen corresponding path program 5 times [2021-11-07 16:14:01,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:14:01,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604342710] [2021-11-07 16:14:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:14:01,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:14:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:14:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-07 16:14:01,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:14:01,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604342710] [2021-11-07 16:14:01,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604342710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:14:01,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218345678] [2021-11-07 16:14:01,916 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 16:14:01,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:14:01,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:14:01,917 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:14:01,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process Killed by 15