./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--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-5f08f0f [2021-11-05 19:32:03,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:32:03,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:32:03,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:32:03,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:32:03,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:32:03,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:32:03,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:32:03,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:32:03,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:32:03,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:32:03,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:32:03,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:32:03,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:32:03,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:32:03,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:32:03,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:32:03,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:32:03,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:32:03,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:32:03,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:32:03,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:32:03,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:32:03,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:32:03,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:32:03,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:32:03,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:32:03,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:32:03,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:32:03,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:32:03,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:32:03,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:32:03,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:32:03,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:32:03,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:32:03,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:32:03,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:32:03,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:32:03,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:32:03,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:32:03,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:32:03,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:32:03,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:32:03,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:32:03,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:32:03,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:32:03,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:32:03,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:32:03,919 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:32:03,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:32:03,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:32:03,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:32:03,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:32:03,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:32:03,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:32:03,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:32:03,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:32:03,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:32:03,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:32:03,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:32:03,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:32:03,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:32:03,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:32:03,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:32:03,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:32:03,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:32:03,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:32:03,922 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:32:03,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:32:03,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:32:03,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:32:03,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ead930b8137fdc7abb50622ed73bdb27f2c7ae71d0ef3b9d44cfc9bee95799 [2021-11-05 19:32:04,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:32:04,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:32:04,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:32:04,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:32:04,211 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:32:04,212 INFO L432 ainManager$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 [2021-11-05 19:32:04,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56420a483/29ef9aba924d4b469c3657a3c245beb8/FLAG0fbc4ad85 [2021-11-05 19:32:04,797 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:32:04,798 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 [2021-11-05 19:32:04,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56420a483/29ef9aba924d4b469c3657a3c245beb8/FLAG0fbc4ad85 [2021-11-05 19:32:05,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56420a483/29ef9aba924d4b469c3657a3c245beb8 [2021-11-05 19:32:05,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:32:05,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:32:05,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:32:05,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:32:05,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:32:05,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:32:05" (1/1) ... [2021-11-05 19:32:05,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd1838f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:05, skipping insertion in model container [2021-11-05 19:32:05,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:32:05" (1/1) ... [2021-11-05 19:32:05,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:32:05,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:32:06,135 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] [2021-11-05 19:32:06,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:32:06,211 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:32:06,410 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] [2021-11-05 19:32:06,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:32:06,451 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:32:06,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06 WrapperNode [2021-11-05 19:32:06,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:32:06,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:32:06,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:32:06,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:32:06,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:32:06,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:32:06,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:32:06,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:32:06,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:32:06,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:32:06,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:32:06,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:32:06,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (1/1) ... [2021-11-05 19:32:06,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:32:06,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:06,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 19:32:06,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 19:32:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:32:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:32:06,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:32:06,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:32:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:32:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:32:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:32:06,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:32:06,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:32:10,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:32:10,408 INFO L299 CfgBuilder]: Removed 938 assume(true) statements. [2021-11-05 19:32:10,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:32:10 BoogieIcfgContainer [2021-11-05 19:32:10,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:32:10,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:32:10,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:32:10,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:32:10,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:32:05" (1/3) ... [2021-11-05 19:32:10,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104927b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:32:10, skipping insertion in model container [2021-11-05 19:32:10,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:32:06" (2/3) ... [2021-11-05 19:32:10,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104927b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:32:10, skipping insertion in model container [2021-11-05 19:32:10,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:32:10" (3/3) ... [2021-11-05 19:32:10,419 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2021-11-05 19:32:10,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:32:10,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-05 19:32:10,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:32:10,474 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 19:32:10,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-05 19:32:10,505 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) [2021-11-05 19:32:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 19:32:10,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:10,527 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] [2021-11-05 19:32:10,528 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)] === [2021-11-05 19:32:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash -453684691, now seen corresponding path program 1 times [2021-11-05 19:32:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:10,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787439795] [2021-11-05 19:32:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:10,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:10,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:10,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787439795] [2021-11-05 19:32:10,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787439795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:10,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:10,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:32:10,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610183328] [2021-11-05 19:32:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:10,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:32:10,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:32:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:32:10,903 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) [2021-11-05 19:32:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:10,942 INFO L93 Difference]: Finished difference Result 1482 states and 2059 transitions. [2021-11-05 19:32:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:32:10,956 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 [2021-11-05 19:32:10,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:10,972 INFO L225 Difference]: With dead ends: 1482 [2021-11-05 19:32:10,972 INFO L226 Difference]: Without dead ends: 738 [2021-11-05 19:32:10,978 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 [2021-11-05 19:32:10,981 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, 3.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:10,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:32:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-05 19:32:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2021-11-05 19:32:11,047 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) [2021-11-05 19:32:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1006 transitions. [2021-11-05 19:32:11,050 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1006 transitions. Word has length 74 [2021-11-05 19:32:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:11,051 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1006 transitions. [2021-11-05 19:32:11,051 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) [2021-11-05 19:32:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1006 transitions. [2021-11-05 19:32:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 19:32:11,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:11,054 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] [2021-11-05 19:32:11,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:32:11,055 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)] === [2021-11-05 19:32:11,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1696617127, now seen corresponding path program 1 times [2021-11-05 19:32:11,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:11,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317237711] [2021-11-05 19:32:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:11,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:11,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:11,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317237711] [2021-11-05 19:32:11,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317237711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:11,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:11,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:11,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320067819] [2021-11-05 19:32:11,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:11,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:11,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:11,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:11,180 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) [2021-11-05 19:32:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:11,240 INFO L93 Difference]: Finished difference Result 1479 states and 2021 transitions. [2021-11-05 19:32:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:11,241 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 [2021-11-05 19:32:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:11,243 INFO L225 Difference]: With dead ends: 1479 [2021-11-05 19:32:11,243 INFO L226 Difference]: Without dead ends: 759 [2021-11-05 19:32:11,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:11,245 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 47 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.12ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:11,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1970 Invalid, 20 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 32.12ms Time] [2021-11-05 19:32:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-11-05 19:32:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 756. [2021-11-05 19:32:11,255 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) [2021-11-05 19:32:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1033 transitions. [2021-11-05 19:32:11,257 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1033 transitions. Word has length 75 [2021-11-05 19:32:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:11,257 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1033 transitions. [2021-11-05 19:32:11,257 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) [2021-11-05 19:32:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1033 transitions. [2021-11-05 19:32:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 19:32:11,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:11,259 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] [2021-11-05 19:32:11,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:32:11,259 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)] === [2021-11-05 19:32:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:11,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1668587877, now seen corresponding path program 1 times [2021-11-05 19:32:11,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:11,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682466595] [2021-11-05 19:32:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:11,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:32:11,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:11,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682466595] [2021-11-05 19:32:11,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682466595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:11,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:11,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:11,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821493620] [2021-11-05 19:32:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:11,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:11,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:11,384 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) [2021-11-05 19:32:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:11,979 INFO L93 Difference]: Finished difference Result 1527 states and 2097 transitions. [2021-11-05 19:32:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:11,980 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 [2021-11-05 19:32:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:11,982 INFO L225 Difference]: With dead ends: 1527 [2021-11-05 19:32:11,982 INFO L226 Difference]: Without dead ends: 789 [2021-11-05 19:32:11,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:11,984 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 53 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 542.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 576.41ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:11,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1988 Invalid, 30 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 576.41ms Time] [2021-11-05 19:32:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-05 19:32:11,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 786. [2021-11-05 19:32:11,994 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) [2021-11-05 19:32:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1077 transitions. [2021-11-05 19:32:11,996 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1077 transitions. Word has length 101 [2021-11-05 19:32:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:11,997 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1077 transitions. [2021-11-05 19:32:11,997 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) [2021-11-05 19:32:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1077 transitions. [2021-11-05 19:32:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 19:32:11,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:11,999 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] [2021-11-05 19:32:11,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:32:11,999 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)] === [2021-11-05 19:32:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1271589435, now seen corresponding path program 1 times [2021-11-05 19:32:12,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:12,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90216903] [2021-11-05 19:32:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:12,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:32:12,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:12,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90216903] [2021-11-05 19:32:12,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90216903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:12,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:12,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:12,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167912654] [2021-11-05 19:32:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:12,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:12,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,079 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) [2021-11-05 19:32:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:12,111 INFO L93 Difference]: Finished difference Result 2320 states and 3182 transitions. [2021-11-05 19:32:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:12,111 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 [2021-11-05 19:32:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:12,116 INFO L225 Difference]: With dead ends: 2320 [2021-11-05 19:32:12,116 INFO L226 Difference]: Without dead ends: 1552 [2021-11-05 19:32:12,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,118 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 978 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.31ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:12,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 2076 Invalid, 6 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 4.31ms Time] [2021-11-05 19:32:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-11-05 19:32:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 787. [2021-11-05 19:32:12,131 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) [2021-11-05 19:32:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1078 transitions. [2021-11-05 19:32:12,132 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1078 transitions. Word has length 115 [2021-11-05 19:32:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:12,133 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 1078 transitions. [2021-11-05 19:32:12,133 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) [2021-11-05 19:32:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1078 transitions. [2021-11-05 19:32:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 19:32:12,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:12,135 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] [2021-11-05 19:32:12,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:32:12,135 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)] === [2021-11-05 19:32:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:12,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1069765501, now seen corresponding path program 1 times [2021-11-05 19:32:12,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:12,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072775920] [2021-11-05 19:32:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:12,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:12,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:12,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072775920] [2021-11-05 19:32:12,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072775920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:12,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:12,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:12,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980741301] [2021-11-05 19:32:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:12,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:12,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:12,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,247 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) [2021-11-05 19:32:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:12,310 INFO L93 Difference]: Finished difference Result 1558 states and 2137 transitions. [2021-11-05 19:32:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:12,310 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 [2021-11-05 19:32:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:12,313 INFO L225 Difference]: With dead ends: 1558 [2021-11-05 19:32:12,313 INFO L226 Difference]: Without dead ends: 789 [2021-11-05 19:32:12,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,315 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 0 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.59ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:12,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1998 Invalid, 14 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 13.59ms Time] [2021-11-05 19:32:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-11-05 19:32:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 789. [2021-11-05 19:32:12,324 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) [2021-11-05 19:32:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1080 transitions. [2021-11-05 19:32:12,326 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1080 transitions. Word has length 115 [2021-11-05 19:32:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:12,326 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1080 transitions. [2021-11-05 19:32:12,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:32:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1080 transitions. [2021-11-05 19:32:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 19:32:12,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:12,328 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] [2021-11-05 19:32:12,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:32:12,328 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)] === [2021-11-05 19:32:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1462792511, now seen corresponding path program 1 times [2021-11-05 19:32:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:12,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076419835] [2021-11-05 19:32:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:12,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076419835] [2021-11-05 19:32:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076419835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:12,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:12,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079971462] [2021-11-05 19:32:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:12,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,418 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) [2021-11-05 19:32:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:12,620 INFO L93 Difference]: Finished difference Result 2247 states and 3092 transitions. [2021-11-05 19:32:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:12,621 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 [2021-11-05 19:32:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:12,625 INFO L225 Difference]: With dead ends: 2247 [2021-11-05 19:32:12,625 INFO L226 Difference]: Without dead ends: 1476 [2021-11-05 19:32:12,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,626 INFO L933 BasicCegarLoop]: 1767 mSDtfsCounter, 863 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.45ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:12,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 2731 Invalid, 76 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 171.45ms Time] [2021-11-05 19:32:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-05 19:32:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2021-11-05 19:32:12,638 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) [2021-11-05 19:32:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1086 transitions. [2021-11-05 19:32:12,639 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1086 transitions. Word has length 115 [2021-11-05 19:32:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:12,640 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 1086 transitions. [2021-11-05 19:32:12,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:32:12,640 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1086 transitions. [2021-11-05 19:32:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-05 19:32:12,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:12,641 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] [2021-11-05 19:32:12,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:32:12,642 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)] === [2021-11-05 19:32:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 556019336, now seen corresponding path program 1 times [2021-11-05 19:32:12,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:12,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911060145] [2021-11-05 19:32:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:12,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-05 19:32:12,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:12,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911060145] [2021-11-05 19:32:12,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911060145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:12,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:12,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:12,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283001759] [2021-11-05 19:32:12,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:12,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:12,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:12,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:12,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:12,726 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) [2021-11-05 19:32:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:12,809 INFO L93 Difference]: Finished difference Result 2229 states and 3074 transitions. [2021-11-05 19:32:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:12,809 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 [2021-11-05 19:32:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:12,813 INFO L225 Difference]: With dead ends: 2229 [2021-11-05 19:32:12,813 INFO L226 Difference]: Without dead ends: 1452 [2021-11-05 19:32:12,847 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 [2021-11-05 19:32:12,848 INFO L933 BasicCegarLoop]: 1747 mSDtfsCounter, 822 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.10ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.38ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:12,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 2717 Invalid, 58 Unknown, 0 Unchecked, 3.10ms Time], IncrementalHoareTripleChecker [22 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 53.38ms Time] [2021-11-05 19:32:12,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-11-05 19:32:12,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 831. [2021-11-05 19:32:12,862 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) [2021-11-05 19:32:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1134 transitions. [2021-11-05 19:32:12,864 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1134 transitions. Word has length 119 [2021-11-05 19:32:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:12,865 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1134 transitions. [2021-11-05 19:32:12,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:32:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1134 transitions. [2021-11-05 19:32:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 19:32:12,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:12,867 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] [2021-11-05 19:32:12,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:32:12,867 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)] === [2021-11-05 19:32:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1859190524, now seen corresponding path program 1 times [2021-11-05 19:32:12,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:12,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793905209] [2021-11-05 19:32:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:12,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:12,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:12,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793905209] [2021-11-05 19:32:12,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793905209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:12,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551514056] [2021-11-05 19:32:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:12,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:12,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:12,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 19:32:12,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 19:32:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:13,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:32:13,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:13,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551514056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:32:13,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:32:13,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 19:32:13,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335763184] [2021-11-05 19:32:13,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:32:13,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:32:13,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:32:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:13,812 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) [2021-11-05 19:32:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:14,389 INFO L93 Difference]: Finished difference Result 4398 states and 6071 transitions. [2021-11-05 19:32:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:32:14,391 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 [2021-11-05 19:32:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:14,401 INFO L225 Difference]: With dead ends: 4398 [2021-11-05 19:32:14,401 INFO L226 Difference]: Without dead ends: 3585 [2021-11-05 19:32:14,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.74ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:14,404 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 5166 mSDsluCounter, 5176 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 403.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 6905 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.51ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.75ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:14,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 6905 Invalid, 223 Unknown, 0 Unchecked, 10.51ms Time], IncrementalHoareTripleChecker [55 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 459.75ms Time] [2021-11-05 19:32:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-11-05 19:32:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 1065. [2021-11-05 19:32:14,463 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) [2021-11-05 19:32:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1428 transitions. [2021-11-05 19:32:14,465 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1428 transitions. Word has length 124 [2021-11-05 19:32:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:14,465 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1428 transitions. [2021-11-05 19:32:14,465 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) [2021-11-05 19:32:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1428 transitions. [2021-11-05 19:32:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-05 19:32:14,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:14,467 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] [2021-11-05 19:32:14,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 19:32:14,689 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 [2021-11-05 19:32:14,689 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)] === [2021-11-05 19:32:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1104694841, now seen corresponding path program 1 times [2021-11-05 19:32:14,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:14,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30183152] [2021-11-05 19:32:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:14,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 19:32:14,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:14,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30183152] [2021-11-05 19:32:14,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30183152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:14,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:14,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:32:14,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012169649] [2021-11-05 19:32:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:14,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:32:14,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:32:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:32:14,780 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) [2021-11-05 19:32:14,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:14,844 INFO L93 Difference]: Finished difference Result 2259 states and 3046 transitions. [2021-11-05 19:32:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:32:14,844 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 [2021-11-05 19:32:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:14,848 INFO L225 Difference]: With dead ends: 2259 [2021-11-05 19:32:14,848 INFO L226 Difference]: Without dead ends: 1212 [2021-11-05 19:32:14,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:32:14,850 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 135 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.47ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:14,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 3252 Invalid, 41 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 35.47ms Time] [2021-11-05 19:32:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-05 19:32:14,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1069. [2021-11-05 19:32:14,866 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) [2021-11-05 19:32:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1432 transitions. [2021-11-05 19:32:14,869 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1432 transitions. Word has length 136 [2021-11-05 19:32:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:14,869 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1432 transitions. [2021-11-05 19:32:14,869 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) [2021-11-05 19:32:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1432 transitions. [2021-11-05 19:32:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 19:32:14,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:14,872 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] [2021-11-05 19:32:14,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 19:32:14,872 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)] === [2021-11-05 19:32:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782625, now seen corresponding path program 1 times [2021-11-05 19:32:14,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:14,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460379405] [2021-11-05 19:32:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:14,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 19:32:14,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:14,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460379405] [2021-11-05 19:32:14,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460379405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:14,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:14,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:32:14,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191030896] [2021-11-05 19:32:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:14,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:32:14,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:32:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:32:14,968 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) [2021-11-05 19:32:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:15,033 INFO L93 Difference]: Finished difference Result 2267 states and 3054 transitions. [2021-11-05 19:32:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:32:15,034 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 [2021-11-05 19:32:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:15,038 INFO L225 Difference]: With dead ends: 2267 [2021-11-05 19:32:15,038 INFO L226 Difference]: Without dead ends: 1216 [2021-11-05 19:32:15,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:32:15,040 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 135 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.87ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:15,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 3252 Invalid, 41 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 36.87ms Time] [2021-11-05 19:32:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-05 19:32:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1069. [2021-11-05 19:32:15,058 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) [2021-11-05 19:32:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1432 transitions. [2021-11-05 19:32:15,060 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1432 transitions. Word has length 143 [2021-11-05 19:32:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:15,061 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1432 transitions. [2021-11-05 19:32:15,061 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) [2021-11-05 19:32:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1432 transitions. [2021-11-05 19:32:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-05 19:32:15,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:15,063 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] [2021-11-05 19:32:15,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 19:32:15,064 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)] === [2021-11-05 19:32:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash -269565133, now seen corresponding path program 1 times [2021-11-05 19:32:15,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:15,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228623689] [2021-11-05 19:32:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:15,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:15,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:15,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228623689] [2021-11-05 19:32:15,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228623689] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:15,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631541581] [2021-11-05 19:32:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:15,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:15,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:15,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 19:32:15,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 19:32:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:15,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 19:32:15,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:15,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-05 19:32:16,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631541581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:32:16,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:32:16,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2021-11-05 19:32:16,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542867155] [2021-11-05 19:32:16,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:32:16,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 19:32:16,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 19:32:16,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:16,153 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) [2021-11-05 19:32:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:16,757 INFO L93 Difference]: Finished difference Result 5377 states and 7354 transitions. [2021-11-05 19:32:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 19:32:16,759 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 [2021-11-05 19:32:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:16,771 INFO L225 Difference]: With dead ends: 5377 [2021-11-05 19:32:16,771 INFO L226 Difference]: Without dead ends: 4326 [2021-11-05 19:32:16,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.77ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:16,774 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 6871 mSDsluCounter, 6015 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 421.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6871 SdHoareTripleChecker+Valid, 7744 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.37ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 475.52ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:16,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6871 Valid, 7744 Invalid, 251 Unknown, 0 Unchecked, 11.37ms Time], IncrementalHoareTripleChecker [53 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 475.52ms Time] [2021-11-05 19:32:16,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-11-05 19:32:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 1153. [2021-11-05 19:32:16,808 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) [2021-11-05 19:32:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1540 transitions. [2021-11-05 19:32:16,810 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1540 transitions. Word has length 144 [2021-11-05 19:32:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:16,811 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1540 transitions. [2021-11-05 19:32:16,811 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) [2021-11-05 19:32:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1540 transitions. [2021-11-05 19:32:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-05 19:32:16,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:16,813 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] [2021-11-05 19:32:16,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:17,019 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 [2021-11-05 19:32:17,020 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)] === [2021-11-05 19:32:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 251199436, now seen corresponding path program 2 times [2021-11-05 19:32:17,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:17,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682086358] [2021-11-05 19:32:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:17,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:17,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:17,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682086358] [2021-11-05 19:32:17,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682086358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:17,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:32:17,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:32:17,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894492100] [2021-11-05 19:32:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:17,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:17,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:17,150 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) [2021-11-05 19:32:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:17,174 INFO L93 Difference]: Finished difference Result 2292 states and 3063 transitions. [2021-11-05 19:32:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:17,175 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 [2021-11-05 19:32:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:17,178 INFO L225 Difference]: With dead ends: 2292 [2021-11-05 19:32:17,178 INFO L226 Difference]: Without dead ends: 1157 [2021-11-05 19:32:17,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:32:17,180 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.85ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:17,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2004 Invalid, 8 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 6.85ms Time] [2021-11-05 19:32:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-05 19:32:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1157. [2021-11-05 19:32:17,224 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) [2021-11-05 19:32:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1544 transitions. [2021-11-05 19:32:17,226 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1544 transitions. Word has length 148 [2021-11-05 19:32:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:17,226 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1544 transitions. [2021-11-05 19:32:17,226 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) [2021-11-05 19:32:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1544 transitions. [2021-11-05 19:32:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-05 19:32:17,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:17,228 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] [2021-11-05 19:32:17,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 19:32:17,229 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)] === [2021-11-05 19:32:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash 912887847, now seen corresponding path program 1 times [2021-11-05 19:32:17,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:17,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030398310] [2021-11-05 19:32:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:17,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:17,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:17,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030398310] [2021-11-05 19:32:17,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030398310] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:17,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323887862] [2021-11-05 19:32:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:17,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:17,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:17,384 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) [2021-11-05 19:32:17,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 19:32:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-05 19:32:17,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 19:32:18,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:18,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323887862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:18,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:18,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-05 19:32:18,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605764531] [2021-11-05 19:32:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:18,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:32:18,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:32:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:32:18,052 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) [2021-11-05 19:32:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:18,232 INFO L93 Difference]: Finished difference Result 2546 states and 3423 transitions. [2021-11-05 19:32:18,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 19:32:18,233 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 [2021-11-05 19:32:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:18,237 INFO L225 Difference]: With dead ends: 2546 [2021-11-05 19:32:18,237 INFO L226 Difference]: Without dead ends: 1407 [2021-11-05 19:32:18,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.26ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-05 19:32:18,239 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 928 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.62ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:18,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 4056 Invalid, 190 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [8 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 124.62ms Time] [2021-11-05 19:32:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2021-11-05 19:32:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1163. [2021-11-05 19:32:18,257 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) [2021-11-05 19:32:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1550 transitions. [2021-11-05 19:32:18,259 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1550 transitions. Word has length 150 [2021-11-05 19:32:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:18,259 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1550 transitions. [2021-11-05 19:32:18,260 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) [2021-11-05 19:32:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1550 transitions. [2021-11-05 19:32:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-05 19:32:18,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:18,262 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] [2021-11-05 19:32:18,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:18,505 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 [2021-11-05 19:32:18,506 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)] === [2021-11-05 19:32:18,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1613781170, now seen corresponding path program 1 times [2021-11-05 19:32:18,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:18,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668069278] [2021-11-05 19:32:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:18,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:18,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:18,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668069278] [2021-11-05 19:32:18,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668069278] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:18,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119450628] [2021-11-05 19:32:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:18,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:18,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:18,704 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) [2021-11-05 19:32:18,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 19:32:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:20,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 19:32:20,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 19:32:20,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119450628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:20,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:20,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 19:32:20,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20431738] [2021-11-05 19:32:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:20,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:32:20,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:32:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:20,286 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) [2021-11-05 19:32:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:20,522 INFO L93 Difference]: Finished difference Result 3575 states and 4788 transitions. [2021-11-05 19:32:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:32:20,522 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 [2021-11-05 19:32:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:20,529 INFO L225 Difference]: With dead ends: 3575 [2021-11-05 19:32:20,529 INFO L226 Difference]: Without dead ends: 2430 [2021-11-05 19:32:20,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.50ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:32:20,531 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 2003 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2003 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.58ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.26ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:20,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2003 Valid, 4288 Invalid, 230 Unknown, 0 Unchecked, 6.58ms Time], IncrementalHoareTripleChecker [20 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 155.26ms Time] [2021-11-05 19:32:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2021-11-05 19:32:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1169. [2021-11-05 19:32:20,565 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) [2021-11-05 19:32:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1556 transitions. [2021-11-05 19:32:20,567 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1556 transitions. Word has length 151 [2021-11-05 19:32:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1556 transitions. [2021-11-05 19:32:20,567 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) [2021-11-05 19:32:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1556 transitions. [2021-11-05 19:32:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-05 19:32:20,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:20,570 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] [2021-11-05 19:32:20,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-05 19:32:20,792 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 [2021-11-05 19:32:20,792 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)] === [2021-11-05 19:32:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash -720066253, now seen corresponding path program 1 times [2021-11-05 19:32:20,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:20,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182549121] [2021-11-05 19:32:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:20,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:20,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:20,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182549121] [2021-11-05 19:32:20,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182549121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:20,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513342908] [2021-11-05 19:32:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:20,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:20,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:20,928 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) [2021-11-05 19:32:20,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 19:32:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:22,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 19:32:22,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 19:32:22,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:22,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513342908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:22,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:22,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 19:32:22,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436986028] [2021-11-05 19:32:22,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:22,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:32:22,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:32:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:22,304 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) [2021-11-05 19:32:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:22,596 INFO L93 Difference]: Finished difference Result 3437 states and 4612 transitions. [2021-11-05 19:32:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 19:32:22,597 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 [2021-11-05 19:32:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:22,602 INFO L225 Difference]: With dead ends: 3437 [2021-11-05 19:32:22,603 INFO L226 Difference]: Without dead ends: 2286 [2021-11-05 19:32:22,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.26ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:32:22,604 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 2193 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.99ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.32ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:22,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2193 Valid, 4877 Invalid, 281 Unknown, 0 Unchecked, 5.99ms Time], IncrementalHoareTripleChecker [21 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 184.32ms Time] [2021-11-05 19:32:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2021-11-05 19:32:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 1175. [2021-11-05 19:32:22,629 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) [2021-11-05 19:32:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1562 transitions. [2021-11-05 19:32:22,631 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1562 transitions. Word has length 152 [2021-11-05 19:32:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:22,631 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1562 transitions. [2021-11-05 19:32:22,631 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) [2021-11-05 19:32:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1562 transitions. [2021-11-05 19:32:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-05 19:32:22,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:22,634 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] [2021-11-05 19:32:22,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-05 19:32:22,847 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 [2021-11-05 19:32:22,847 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)] === [2021-11-05 19:32:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1077379303, now seen corresponding path program 1 times [2021-11-05 19:32:22,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:22,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076154788] [2021-11-05 19:32:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:22,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:22,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:22,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076154788] [2021-11-05 19:32:22,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076154788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:22,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831459486] [2021-11-05 19:32:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:22,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:23,016 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) [2021-11-05 19:32:23,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 19:32:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:23,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 2062 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-05 19:32:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 19:32:24,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:24,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831459486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:24,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:24,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-05 19:32:24,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416631230] [2021-11-05 19:32:24,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:24,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:32:24,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:32:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:32:24,175 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) [2021-11-05 19:32:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:24,262 INFO L93 Difference]: Finished difference Result 2674 states and 3585 transitions. [2021-11-05 19:32:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 19:32:24,263 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 [2021-11-05 19:32:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:24,267 INFO L225 Difference]: With dead ends: 2674 [2021-11-05 19:32:24,267 INFO L226 Difference]: Without dead ends: 1517 [2021-11-05 19:32:24,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.35ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:24,269 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 407 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.80ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:24,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 3426 Invalid, 41 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 46.80ms Time] [2021-11-05 19:32:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2021-11-05 19:32:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1179. [2021-11-05 19:32:24,290 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) [2021-11-05 19:32:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1566 transitions. [2021-11-05 19:32:24,291 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1566 transitions. Word has length 153 [2021-11-05 19:32:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:24,292 INFO L470 AbstractCegarLoop]: Abstraction has 1179 states and 1566 transitions. [2021-11-05 19:32:24,292 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) [2021-11-05 19:32:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1566 transitions. [2021-11-05 19:32:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-05 19:32:24,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:24,294 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] [2021-11-05 19:32:24,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:24,512 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 [2021-11-05 19:32:24,512 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)] === [2021-11-05 19:32:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash -572264394, now seen corresponding path program 1 times [2021-11-05 19:32:24,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:24,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847644047] [2021-11-05 19:32:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:24,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:24,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:24,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847644047] [2021-11-05 19:32:24,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847644047] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:24,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222269442] [2021-11-05 19:32:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:24,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:24,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:24,688 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) [2021-11-05 19:32:24,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 19:32:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2076 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 19:32:26,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 19:32:26,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222269442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:26,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:26,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 19:32:26,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601438926] [2021-11-05 19:32:26,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:26,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:32:26,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:32:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:26,332 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) [2021-11-05 19:32:26,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:26,616 INFO L93 Difference]: Finished difference Result 3045 states and 4076 transitions. [2021-11-05 19:32:26,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 19:32:26,616 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 [2021-11-05 19:32:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:26,631 INFO L225 Difference]: With dead ends: 3045 [2021-11-05 19:32:26,632 INFO L226 Difference]: Without dead ends: 1884 [2021-11-05 19:32:26,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.47ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:32:26,634 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 1155 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 189.76ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:26,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 4627 Invalid, 256 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [18 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 189.76ms Time] [2021-11-05 19:32:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-11-05 19:32:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1185. [2021-11-05 19:32:26,659 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) [2021-11-05 19:32:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1572 transitions. [2021-11-05 19:32:26,666 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1572 transitions. Word has length 156 [2021-11-05 19:32:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:26,666 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1572 transitions. [2021-11-05 19:32:26,666 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) [2021-11-05 19:32:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1572 transitions. [2021-11-05 19:32:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-05 19:32:26,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:26,669 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] [2021-11-05 19:32:26,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:26,892 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 [2021-11-05 19:32:26,892 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)] === [2021-11-05 19:32:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2047593680, now seen corresponding path program 1 times [2021-11-05 19:32:26,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:26,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246089398] [2021-11-05 19:32:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:26,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:27,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:27,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246089398] [2021-11-05 19:32:27,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246089398] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:27,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753124766] [2021-11-05 19:32:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:27,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:27,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:27,014 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) [2021-11-05 19:32:27,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 19:32:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:28,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:32:28,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-05 19:32:28,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:28,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753124766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:28,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:28,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 19:32:28,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147679519] [2021-11-05 19:32:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:28,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:28,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:28,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:28,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:32:28,355 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) [2021-11-05 19:32:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:28,412 INFO L93 Difference]: Finished difference Result 2467 states and 3288 transitions. [2021-11-05 19:32:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:28,412 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 [2021-11-05 19:32:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:28,414 INFO L225 Difference]: With dead ends: 2467 [2021-11-05 19:32:28,415 INFO L226 Difference]: Without dead ends: 1300 [2021-11-05 19:32:28,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.69ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:32:28,416 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 91 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.70ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:28,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2091 Invalid, 14 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 33.70ms Time] [2021-11-05 19:32:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-05 19:32:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1187. [2021-11-05 19:32:28,435 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) [2021-11-05 19:32:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1574 transitions. [2021-11-05 19:32:28,437 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1574 transitions. Word has length 157 [2021-11-05 19:32:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:28,437 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1574 transitions. [2021-11-05 19:32:28,437 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) [2021-11-05 19:32:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1574 transitions. [2021-11-05 19:32:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-05 19:32:28,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:28,439 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] [2021-11-05 19:32:28,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:28,659 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 [2021-11-05 19:32:28,659 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)] === [2021-11-05 19:32:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1807353934, now seen corresponding path program 1 times [2021-11-05 19:32:28,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:28,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849889634] [2021-11-05 19:32:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:28,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:28,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:28,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849889634] [2021-11-05 19:32:28,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849889634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:28,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722144928] [2021-11-05 19:32:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:28,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:28,811 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) [2021-11-05 19:32:28,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 19:32:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:30,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:32:30,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:31,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:31,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722144928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:32:31,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:32:31,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 19:32:31,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518449842] [2021-11-05 19:32:31,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:32:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:32:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:32:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:32:31,209 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) [2021-11-05 19:32:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:31,287 INFO L93 Difference]: Finished difference Result 2368 states and 3143 transitions. [2021-11-05 19:32:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:32:31,287 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 [2021-11-05 19:32:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:31,289 INFO L225 Difference]: With dead ends: 2368 [2021-11-05 19:32:31,289 INFO L226 Difference]: Without dead ends: 1199 [2021-11-05 19:32:31,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 19.39ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:31,293 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 7 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.53ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.42ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:31,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4010 Invalid, 35 Unknown, 0 Unchecked, 15.53ms Time], IncrementalHoareTripleChecker [13 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 30.42ms Time] [2021-11-05 19:32:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-05 19:32:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1199. [2021-11-05 19:32:31,317 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) [2021-11-05 19:32:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1586 transitions. [2021-11-05 19:32:31,318 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1586 transitions. Word has length 157 [2021-11-05 19:32:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:31,318 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1586 transitions. [2021-11-05 19:32:31,318 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) [2021-11-05 19:32:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1586 transitions. [2021-11-05 19:32:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-05 19:32:31,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:31,321 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] [2021-11-05 19:32:31,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:31,543 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 [2021-11-05 19:32:31,543 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)] === [2021-11-05 19:32:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash -434245119, now seen corresponding path program 2 times [2021-11-05 19:32:31,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:31,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738653723] [2021-11-05 19:32:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:31,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-05 19:32:31,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:31,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738653723] [2021-11-05 19:32:31,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738653723] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:31,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533289220] [2021-11-05 19:32:31,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:32:31,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:31,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:31,680 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) [2021-11-05 19:32:31,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 19:32:32,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:32:32,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:32:32,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-05 19:32:32,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-05 19:32:32,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:32,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533289220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:32,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:32,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-05 19:32:32,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372414967] [2021-11-05 19:32:32,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:32,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:32,694 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) [2021-11-05 19:32:32,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:32,751 INFO L93 Difference]: Finished difference Result 2394 states and 3169 transitions. [2021-11-05 19:32:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:32,751 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 [2021-11-05 19:32:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:32,753 INFO L225 Difference]: With dead ends: 2394 [2021-11-05 19:32:32,753 INFO L226 Difference]: Without dead ends: 1202 [2021-11-05 19:32:32,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.47ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:32,755 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 0 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.52ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:32,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1982 Invalid, 31 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 36.52ms Time] [2021-11-05 19:32:32,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-05 19:32:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2021-11-05 19:32:32,778 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) [2021-11-05 19:32:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1589 transitions. [2021-11-05 19:32:32,779 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1589 transitions. Word has length 163 [2021-11-05 19:32:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:32,779 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 1589 transitions. [2021-11-05 19:32:32,780 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) [2021-11-05 19:32:32,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1589 transitions. [2021-11-05 19:32:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-05 19:32:32,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:32,782 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] [2021-11-05 19:32:32,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:33,003 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 [2021-11-05 19:32:33,004 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)] === [2021-11-05 19:32:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1851118755, now seen corresponding path program 1 times [2021-11-05 19:32:33,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:33,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460865486] [2021-11-05 19:32:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:33,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-05 19:32:33,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:33,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460865486] [2021-11-05 19:32:33,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460865486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:33,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328273532] [2021-11-05 19:32:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:33,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:33,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:33,150 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) [2021-11-05 19:32:33,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 19:32:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:36,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 19:32:36,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-05 19:32:37,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:32:37,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328273532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:32:37,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:32:37,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-05 19:32:37,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259936704] [2021-11-05 19:32:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:32:37,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:32:37,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:32:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:37,028 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) [2021-11-05 19:32:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:37,094 INFO L93 Difference]: Finished difference Result 2402 states and 3177 transitions. [2021-11-05 19:32:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:32:37,095 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 [2021-11-05 19:32:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:37,097 INFO L225 Difference]: With dead ends: 2402 [2021-11-05 19:32:37,097 INFO L226 Difference]: Without dead ends: 1204 [2021-11-05 19:32:37,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.80ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:32:37,098 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 0 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.17ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:37,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1983 Invalid, 29 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 28.17ms Time] [2021-11-05 19:32:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-11-05 19:32:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2021-11-05 19:32:37,132 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) [2021-11-05 19:32:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1591 transitions. [2021-11-05 19:32:37,134 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1591 transitions. Word has length 166 [2021-11-05 19:32:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:37,134 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 1591 transitions. [2021-11-05 19:32:37,135 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) [2021-11-05 19:32:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1591 transitions. [2021-11-05 19:32:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-05 19:32:37,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:37,137 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] [2021-11-05 19:32:37,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:37,363 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 [2021-11-05 19:32:37,364 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)] === [2021-11-05 19:32:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1059600405, now seen corresponding path program 1 times [2021-11-05 19:32:37,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:37,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083965189] [2021-11-05 19:32:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:37,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-05 19:32:37,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083965189] [2021-11-05 19:32:37,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083965189] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:37,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118512734] [2021-11-05 19:32:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:37,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:37,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:37,536 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) [2021-11-05 19:32:37,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 19:32:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:40,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-05 19:32:40,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:32:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-05 19:32:40,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:32:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-05 19:32:40,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118512734] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:32:40,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:32:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-05 19:32:40,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814110359] [2021-11-05 19:32:40,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:32:40,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 19:32:40,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:32:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 19:32:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-11-05 19:32:40,516 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) [2021-11-05 19:32:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:32:40,800 INFO L93 Difference]: Finished difference Result 2409 states and 3190 transitions. [2021-11-05 19:32:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 19:32:40,800 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 [2021-11-05 19:32:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:32:40,802 INFO L225 Difference]: With dead ends: 2409 [2021-11-05 19:32:40,802 INFO L226 Difference]: Without dead ends: 1228 [2021-11-05 19:32:40,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 202.08ms TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2021-11-05 19:32:40,804 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 31 mSDsluCounter, 6040 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7052 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.59ms IncrementalHoareTripleChecker+Time [2021-11-05 19:32:40,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 7052 Invalid, 132 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [50 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 110.59ms Time] [2021-11-05 19:32:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-05 19:32:40,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1228. [2021-11-05 19:32:40,822 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) [2021-11-05 19:32:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1615 transitions. [2021-11-05 19:32:40,823 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1615 transitions. Word has length 168 [2021-11-05 19:32:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:32:40,824 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 1615 transitions. [2021-11-05 19:32:40,824 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) [2021-11-05 19:32:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1615 transitions. [2021-11-05 19:32:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-05 19:32:40,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:32:40,826 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] [2021-11-05 19:32:40,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 19:32:41,042 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 [2021-11-05 19:32:41,043 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)] === [2021-11-05 19:32:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:32:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash -819660855, now seen corresponding path program 2 times [2021-11-05 19:32:41,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:32:41,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012713926] [2021-11-05 19:32:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:32:41,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:32:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:32:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-05 19:32:41,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:32:41,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012713926] [2021-11-05 19:32:41,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012713926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:32:41,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56738266] [2021-11-05 19:32:41,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:32:41,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:32:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:32:41,283 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) [2021-11-05 19:32:41,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 19:33:45,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 19:33:45,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:33:45,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-05 19:33:45,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:33:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-05 19:33:46,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:33:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-05 19:33:46,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56738266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:33:46,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:33:46,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 17 [2021-11-05 19:33:46,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506490609] [2021-11-05 19:33:46,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:33:46,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 19:33:46,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:33:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 19:33:46,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-05 19:33:46,482 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) [2021-11-05 19:33:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:33:46,834 INFO L93 Difference]: Finished difference Result 2472 states and 3264 transitions. [2021-11-05 19:33:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 19:33:46,835 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 [2021-11-05 19:33:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:33:46,837 INFO L225 Difference]: With dead ends: 2472 [2021-11-05 19:33:46,837 INFO L226 Difference]: Without dead ends: 1249 [2021-11-05 19:33:46,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.55ms TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-05 19:33:46,839 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 14 mSDsluCounter, 10084 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11097 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.63ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 300.18ms IncrementalHoareTripleChecker+Time [2021-11-05 19:33:46,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 11097 Invalid, 506 Unknown, 0 Unchecked, 4.63ms Time], IncrementalHoareTripleChecker [71 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 300.18ms Time] [2021-11-05 19:33:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-05 19:33:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1249. [2021-11-05 19:33:46,859 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) [2021-11-05 19:33:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1636 transitions. [2021-11-05 19:33:46,860 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1636 transitions. Word has length 180 [2021-11-05 19:33:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:33:46,860 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1636 transitions. [2021-11-05 19:33:46,861 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) [2021-11-05 19:33:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1636 transitions. [2021-11-05 19:33:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-05 19:33:46,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:33:46,863 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] [2021-11-05 19:33:46,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-05 19:33:47,082 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 [2021-11-05 19:33:47,082 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)] === [2021-11-05 19:33:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:33:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1141471332, now seen corresponding path program 3 times [2021-11-05 19:33:47,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:33:47,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259755378] [2021-11-05 19:33:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:33:47,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:33:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:33:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-05 19:33:47,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:33:47,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259755378] [2021-11-05 19:33:47,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259755378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:33:47,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538764703] [2021-11-05 19:33:47,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 19:33:47,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:33:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:33:47,331 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) [2021-11-05 19:33:47,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-05 19:34:22,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-05 19:34:22,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:34:22,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-05 19:34:22,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:34:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-05 19:34:22,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:34:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-11-05 19:34:22,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538764703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:34:22,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:34:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2021-11-05 19:34:22,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114989360] [2021-11-05 19:34:22,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:34:22,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 19:34:22,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:34:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 19:34:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-05 19:34:22,561 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) [2021-11-05 19:34:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:34:23,255 INFO L93 Difference]: Finished difference Result 2505 states and 3295 transitions. [2021-11-05 19:34:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 19:34:23,256 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 [2021-11-05 19:34:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:34:23,257 INFO L225 Difference]: With dead ends: 2505 [2021-11-05 19:34:23,257 INFO L226 Difference]: Without dead ends: 1269 [2021-11-05 19:34:23,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 406.30ms TimeCoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 19:34:23,259 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 1019 mSDsluCounter, 8152 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 361.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 9167 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.05ms SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.26ms IncrementalHoareTripleChecker+Time [2021-11-05 19:34:23,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 9167 Invalid, 669 Unknown, 0 Unchecked, 6.05ms Time], IncrementalHoareTripleChecker [152 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 408.26ms Time] [2021-11-05 19:34:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2021-11-05 19:34:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2021-11-05 19:34:23,291 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) [2021-11-05 19:34:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1656 transitions. [2021-11-05 19:34:23,316 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1656 transitions. Word has length 191 [2021-11-05 19:34:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:34:23,316 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1656 transitions. [2021-11-05 19:34:23,316 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) [2021-11-05 19:34:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1656 transitions. [2021-11-05 19:34:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-05 19:34:23,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:34:23,318 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] [2021-11-05 19:34:23,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-05 19:34:23,539 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 [2021-11-05 19:34:23,539 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)] === [2021-11-05 19:34:23,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:34:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1666812567, now seen corresponding path program 4 times [2021-11-05 19:34:23,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:34:23,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880841468] [2021-11-05 19:34:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:34:23,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:34:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:34:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-05 19:34:23,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:34:23,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880841468] [2021-11-05 19:34:23,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880841468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:34:23,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165484186] [2021-11-05 19:34:23,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-05 19:34:23,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:34:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:34:23,807 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) [2021-11-05 19:34:23,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-05 19:34:28,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-05 19:34:28,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:34:28,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-05 19:34:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:34:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-05 19:34:28,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:34:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-11-05 19:34:29,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165484186] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:34:29,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:34:29,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2021-11-05 19:34:29,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185771798] [2021-11-05 19:34:29,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:34:29,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-05 19:34:29,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:34:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-05 19:34:29,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2021-11-05 19:34:29,016 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) [2021-11-05 19:34:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:34:43,794 INFO L93 Difference]: Finished difference Result 3805 states and 5006 transitions. [2021-11-05 19:34:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-05 19:34:43,794 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 [2021-11-05 19:34:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:34:43,798 INFO L225 Difference]: With dead ends: 3805 [2021-11-05 19:34:43,798 INFO L226 Difference]: Without dead ends: 2544 [2021-11-05 19:34:43,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 7981.65ms TimeCoverageRelationStatistics Valid=500, Invalid=4192, Unknown=0, NotChecked=0, Total=4692 [2021-11-05 19:34:43,803 INFO L933 BasicCegarLoop]: 2013 mSDtfsCounter, 2069 mSDsluCounter, 33054 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6695.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 35067 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.85ms SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6997.23ms IncrementalHoareTripleChecker+Time [2021-11-05 19:34:43,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 35067 Invalid, 2224 Unknown, 0 Unchecked, 22.85ms Time], IncrementalHoareTripleChecker [421 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 6997.23ms Time] [2021-11-05 19:34:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-05 19:34:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1319. [2021-11-05 19:34:43,841 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) [2021-11-05 19:34:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1716 transitions. [2021-11-05 19:34:43,842 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1716 transitions. Word has length 205 [2021-11-05 19:34:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:34:43,843 INFO L470 AbstractCegarLoop]: Abstraction has 1319 states and 1716 transitions. [2021-11-05 19:34:43,843 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) [2021-11-05 19:34:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1716 transitions. [2021-11-05 19:34:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-05 19:34:43,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:34:43,845 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] [2021-11-05 19:34:43,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-05 19:34:44,051 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 [2021-11-05 19:34:44,051 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)] === [2021-11-05 19:34:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:34:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash -833093778, now seen corresponding path program 5 times [2021-11-05 19:34:44,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:34:44,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879658824] [2021-11-05 19:34:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:34:44,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:34:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:34:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-05 19:34:44,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:34:44,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879658824] [2021-11-05 19:34:44,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879658824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:34:44,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868805993] [2021-11-05 19:34:44,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-05 19:34:44,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:34:44,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:34:44,329 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) [2021-11-05 19:34:44,330 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