./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--device_handler--scsi_dh_rdac.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--device_handler--scsi_dh_rdac.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 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:28:38,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:28:38,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:28:38,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:28:38,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:28:38,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:28:38,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:28:38,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:28:38,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:28:38,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:28:38,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:28:38,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:28:38,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:28:38,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:28:38,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:28:38,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:28:38,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:28:38,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:28:38,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:28:38,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:28:38,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:28:38,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:28:38,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:28:38,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:28:38,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:28:38,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:28:38,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:28:38,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:28:38,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:28:38,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:28:38,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:28:38,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:28:38,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:28:38,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:28:38,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:28:38,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:28:38,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:28:38,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:28:38,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:28:38,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:28:38,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:28:38,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:28:38,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:28:38,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:28:38,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:28:38,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:28:38,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:28:38,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:28:38,596 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:28:38,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:28:38,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:28:38,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:28:38,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:28:38,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:28:38,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:28:38,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:28:38,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:28:38,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:28:38,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:28:38,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:28:38,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:28:38,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:28:38,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:28:38,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:28:38,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:28:38,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:28:38,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:28:38,600 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:28:38,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:28:38,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:28:38,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:28:38,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 230b725329634d718374ec3f6d82161758e5d9913588383fdc3e35a9fd1533f5 [2021-11-05 19:28:38,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:28:38,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:28:38,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:28:38,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:28:38,942 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:28:38,943 INFO L432 ainManager$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--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-11-05 19:28:38,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d2dff3d/9207159894934822a44a259118f141f6/FLAG0ce4a592e [2021-11-05 19:28:39,665 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:28:39,666 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--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-11-05 19:28:39,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d2dff3d/9207159894934822a44a259118f141f6/FLAG0ce4a592e [2021-11-05 19:28:39,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d2dff3d/9207159894934822a44a259118f141f6 [2021-11-05 19:28:39,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:28:39,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:28:39,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:28:39,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:28:39,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:28:39,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:28:39" (1/1) ... [2021-11-05 19:28:39,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1bae63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:39, skipping insertion in model container [2021-11-05 19:28:39,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:28:39" (1/1) ... [2021-11-05 19:28:39,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:28:40,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:28:41,080 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--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2021-11-05 19:28:41,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:28:41,131 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:28:41,352 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--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i[164687,164700] [2021-11-05 19:28:41,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:28:41,408 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:28:41,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41 WrapperNode [2021-11-05 19:28:41,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:28:41,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:28:41,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:28:41,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:28:41,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:41,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:28:42,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:28:42,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:28:42,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:28:42,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:42,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:43,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:28:43,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:28:43,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:28:43,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:28:43,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (1/1) ... [2021-11-05 19:28:43,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:28:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:28:43,102 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 19:28:43,111 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 19:28:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:28:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-05 19:28:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-05 19:28:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-05 19:28:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:28:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:28:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:28:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:28:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-05 19:28:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-05 19:28:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:28:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2021-11-05 19:28:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2021-11-05 19:28:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:28:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:28:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-05 19:28:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 19:28:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 19:28:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:28:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 19:28:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:28:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:28:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:28:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:28:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:28:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:28:55,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:28:55,435 INFO L299 CfgBuilder]: Removed 3524 assume(true) statements. [2021-11-05 19:28:55,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:28:55 BoogieIcfgContainer [2021-11-05 19:28:55,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:28:55,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:28:55,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:28:55,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:28:55,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:28:39" (1/3) ... [2021-11-05 19:28:55,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682414d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:28:55, skipping insertion in model container [2021-11-05 19:28:55,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:28:41" (2/3) ... [2021-11-05 19:28:55,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682414d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:28:55, skipping insertion in model container [2021-11-05 19:28:55,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:28:55" (3/3) ... [2021-11-05 19:28:55,449 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2021-11-05 19:28:55,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:28:55,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-05 19:28:55,515 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:28:55,521 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 19:28:55,522 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-05 19:28:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 3676 states, 3662 states have (on average 1.4412889131622064) internal successors, (5278), 3666 states have internal predecessors, (5278), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:28:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 19:28:55,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:55,606 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] [2021-11-05 19:28:55,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:28:55,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash -792164640, now seen corresponding path program 1 times [2021-11-05 19:28:55,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:28:55,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655240408] [2021-11-05 19:28:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:55,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:28:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:56,043 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 19:28:56,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:28:56,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655240408] [2021-11-05 19:28:56,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655240408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:56,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:56,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:28:56,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140237073] [2021-11-05 19:28:56,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:56,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:28:56,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:56,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:28:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:28:56,088 INFO L87 Difference]: Start difference. First operand has 3676 states, 3662 states have (on average 1.4412889131622064) internal successors, (5278), 3666 states have internal predecessors, (5278), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 19:28:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:28:56,262 INFO L93 Difference]: Finished difference Result 7348 states and 10581 transitions. [2021-11-05 19:28:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:28:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-05 19:28:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:28:56,297 INFO L225 Difference]: With dead ends: 7348 [2021-11-05 19:28:56,298 INFO L226 Difference]: Without dead ends: 2283 [2021-11-05 19:28:56,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:28:56,325 INFO L933 BasicCegarLoop]: 5193 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, 5193 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:56,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5193 Invalid, 0 Unknown, 0 Unchecked, 16.24ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:28:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-11-05 19:28:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2283. [2021-11-05 19:28:56,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2270 states have (on average 1.411013215859031) internal successors, (3203), 2273 states have internal predecessors, (3203), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:28:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3215 transitions. [2021-11-05 19:28:56,454 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3215 transitions. Word has length 30 [2021-11-05 19:28:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:28:56,455 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3215 transitions. [2021-11-05 19:28:56,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 19:28:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3215 transitions. [2021-11-05 19:28:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 19:28:56,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:56,458 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] [2021-11-05 19:28:56,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:28:56,458 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:28:56,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:56,460 INFO L85 PathProgramCache]: Analyzing trace with hash -557880348, now seen corresponding path program 1 times [2021-11-05 19:28:56,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:28:56,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93921020] [2021-11-05 19:28:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:56,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:28:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:56,640 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 19:28:56,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:28:56,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93921020] [2021-11-05 19:28:56,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93921020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:56,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:56,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:28:56,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250866236] [2021-11-05 19:28:56,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:56,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:28:56,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:28:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:28:56,645 INFO L87 Difference]: Start difference. First operand 2283 states and 3215 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 19:28:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:28:56,823 INFO L93 Difference]: Finished difference Result 4923 states and 6947 transitions. [2021-11-05 19:28:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:28:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-05 19:28:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:28:56,839 INFO L225 Difference]: With dead ends: 4923 [2021-11-05 19:28:56,839 INFO L226 Difference]: Without dead ends: 2659 [2021-11-05 19:28:56,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:28:56,852 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 549 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 6383 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.47ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:56,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 6383 Invalid, 28 Unknown, 0 Unchecked, 10.95ms Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 81.47ms Time] [2021-11-05 19:28:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-11-05 19:28:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2658. [2021-11-05 19:28:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2645 states have (on average 1.4132325141776938) internal successors, (3738), 2648 states have internal predecessors, (3738), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:28:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3750 transitions. [2021-11-05 19:28:56,922 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3750 transitions. Word has length 30 [2021-11-05 19:28:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:28:56,923 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3750 transitions. [2021-11-05 19:28:56,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 19:28:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3750 transitions. [2021-11-05 19:28:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 19:28:56,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:56,926 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] [2021-11-05 19:28:56,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:28:56,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:28:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash 889001481, now seen corresponding path program 1 times [2021-11-05 19:28:56,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:28:56,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625097726] [2021-11-05 19:28:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:56,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:28:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:57,085 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 19:28:57,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:28:57,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625097726] [2021-11-05 19:28:57,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625097726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:57,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:57,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:28:57,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652570388] [2021-11-05 19:28:57,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:57,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:28:57,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:28:57,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:28:57,088 INFO L87 Difference]: Start difference. First operand 2658 states and 3750 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 19:28:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:28:57,491 INFO L93 Difference]: Finished difference Result 7904 states and 11171 transitions. [2021-11-05 19:28:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:28:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-05 19:28:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:28:57,518 INFO L225 Difference]: With dead ends: 7904 [2021-11-05 19:28:57,518 INFO L226 Difference]: Without dead ends: 5265 [2021-11-05 19:28:57,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.02ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:28:57,529 INFO L933 BasicCegarLoop]: 4273 mSDtfsCounter, 4741 mSDsluCounter, 12248 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 16521 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.51ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.74ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:57,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4743 Valid, 16521 Invalid, 35 Unknown, 0 Unchecked, 27.51ms Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 39.74ms Time] [2021-11-05 19:28:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2021-11-05 19:28:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 2661. [2021-11-05 19:28:57,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2648 states have (on average 1.4127643504531722) internal successors, (3741), 2651 states have internal predecessors, (3741), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:28:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3753 transitions. [2021-11-05 19:28:57,617 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3753 transitions. Word has length 50 [2021-11-05 19:28:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:28:57,617 INFO L470 AbstractCegarLoop]: Abstraction has 2661 states and 3753 transitions. [2021-11-05 19:28:57,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 19:28:57,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3753 transitions. [2021-11-05 19:28:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 19:28:57,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:57,620 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] [2021-11-05 19:28:57,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:28:57,620 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:28:57,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:57,621 INFO L85 PathProgramCache]: Analyzing trace with hash 432522714, now seen corresponding path program 1 times [2021-11-05 19:28:57,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:28:57,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540962952] [2021-11-05 19:28:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:57,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:28:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:28:57,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:28:57,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540962952] [2021-11-05 19:28:57,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540962952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:57,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:57,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:28:57,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604581346] [2021-11-05 19:28:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:57,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:28:57,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:28:57,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:28:57,756 INFO L87 Difference]: Start difference. First operand 2661 states and 3753 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 19:28:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:28:57,924 INFO L93 Difference]: Finished difference Result 2714 states and 3829 transitions. [2021-11-05 19:28:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:28:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 51 [2021-11-05 19:28:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:28:57,942 INFO L225 Difference]: With dead ends: 2714 [2021-11-05 19:28:57,942 INFO L226 Difference]: Without dead ends: 2710 [2021-11-05 19:28:57,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:28:57,946 INFO L933 BasicCegarLoop]: 3219 mSDtfsCounter, 2867 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2867 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.69ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.51ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:57,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2867 Valid, 3521 Invalid, 56 Unknown, 0 Unchecked, 5.69ms Time], IncrementalHoareTripleChecker [27 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 109.51ms Time] [2021-11-05 19:28:57,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-11-05 19:28:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2657. [2021-11-05 19:28:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 2646 states have (on average 1.4123204837490553) internal successors, (3737), 2647 states have internal predecessors, (3737), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:28:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3749 transitions. [2021-11-05 19:28:58,026 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3749 transitions. Word has length 51 [2021-11-05 19:28:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:28:58,026 INFO L470 AbstractCegarLoop]: Abstraction has 2657 states and 3749 transitions. [2021-11-05 19:28:58,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 19:28:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3749 transitions. [2021-11-05 19:28:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 19:28:58,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:58,033 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] [2021-11-05 19:28:58,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:28:58,033 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:28:58,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash 850413282, now seen corresponding path program 1 times [2021-11-05 19:28:58,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:28:58,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211093983] [2021-11-05 19:28:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:58,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:28:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:28:58,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:28:58,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211093983] [2021-11-05 19:28:58,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211093983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:58,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:58,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 19:28:58,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158045295] [2021-11-05 19:28:58,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:58,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:28:58,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:28:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:28:58,209 INFO L87 Difference]: Start difference. First operand 2657 states and 3749 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:28:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:28:58,776 INFO L93 Difference]: Finished difference Result 9910 states and 14087 transitions. [2021-11-05 19:28:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 19:28:58,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-05 19:28:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:28:58,814 INFO L225 Difference]: With dead ends: 9910 [2021-11-05 19:28:58,814 INFO L226 Difference]: Without dead ends: 7272 [2021-11-05 19:28:58,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 89.35ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-05 19:28:58,829 INFO L933 BasicCegarLoop]: 4651 mSDtfsCounter, 9430 mSDsluCounter, 20172 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9430 SdHoareTripleChecker+Valid, 24823 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.55ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.49ms IncrementalHoareTripleChecker+Time [2021-11-05 19:28:58,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9430 Valid, 24823 Invalid, 153 Unknown, 0 Unchecked, 37.55ms Time], IncrementalHoareTripleChecker [29 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 174.49ms Time] [2021-11-05 19:28:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-11-05 19:28:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 2663. [2021-11-05 19:28:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2652 states have (on average 1.4113876319758674) internal successors, (3743), 2653 states have internal predecessors, (3743), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:28:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3755 transitions. [2021-11-05 19:28:58,967 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3755 transitions. Word has length 87 [2021-11-05 19:28:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:28:58,968 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3755 transitions. [2021-11-05 19:28:58,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:28:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3755 transitions. [2021-11-05 19:28:58,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 19:28:58,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:28:58,976 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] [2021-11-05 19:28:58,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:28:58,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:28:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:28:58,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1646447522, now seen corresponding path program 1 times [2021-11-05 19:28:58,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:28:58,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168285159] [2021-11-05 19:28:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:28:58,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:28:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:28:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:28:59,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:28:59,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168285159] [2021-11-05 19:28:59,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168285159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:28:59,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:28:59,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 19:28:59,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68112356] [2021-11-05 19:28:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:28:59,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:28:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:28:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:28:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:28:59,263 INFO L87 Difference]: Start difference. First operand 2663 states and 3755 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 19:29:00,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:00,011 INFO L93 Difference]: Finished difference Result 9929 states and 14106 transitions. [2021-11-05 19:29:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 19:29:00,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 92 [2021-11-05 19:29:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:00,066 INFO L225 Difference]: With dead ends: 9929 [2021-11-05 19:29:00,066 INFO L226 Difference]: Without dead ends: 7285 [2021-11-05 19:29:00,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 94.04ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-05 19:29:00,084 INFO L933 BasicCegarLoop]: 4940 mSDtfsCounter, 8928 mSDsluCounter, 21017 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8928 SdHoareTripleChecker+Valid, 25957 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.16ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.57ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:00,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8928 Valid, 25957 Invalid, 167 Unknown, 0 Unchecked, 32.16ms Time], IncrementalHoareTripleChecker [27 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 203.57ms Time] [2021-11-05 19:29:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2021-11-05 19:29:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 2664. [2021-11-05 19:29:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2653 states have (on average 1.4112325669053902) internal successors, (3744), 2654 states have internal predecessors, (3744), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3756 transitions. [2021-11-05 19:29:00,253 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3756 transitions. Word has length 92 [2021-11-05 19:29:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:00,255 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3756 transitions. [2021-11-05 19:29:00,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 19:29:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3756 transitions. [2021-11-05 19:29:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-05 19:29:00,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:00,261 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] [2021-11-05 19:29:00,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 19:29:00,261 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:00,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1708487136, now seen corresponding path program 1 times [2021-11-05 19:29:00,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:00,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518458641] [2021-11-05 19:29:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:00,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:00,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:00,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518458641] [2021-11-05 19:29:00,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518458641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:00,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:00,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:29:00,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175894078] [2021-11-05 19:29:00,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:00,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:29:00,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:29:00,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:29:00,475 INFO L87 Difference]: Start difference. First operand 2664 states and 3756 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 19:29:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:01,032 INFO L93 Difference]: Finished difference Result 8239 states and 11667 transitions. [2021-11-05 19:29:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 19:29:01,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 92 [2021-11-05 19:29:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:01,058 INFO L225 Difference]: With dead ends: 8239 [2021-11-05 19:29:01,058 INFO L226 Difference]: Without dead ends: 5594 [2021-11-05 19:29:01,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.70ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:29:01,069 INFO L933 BasicCegarLoop]: 4718 mSDtfsCounter, 3579 mSDsluCounter, 11753 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 16471 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.32ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.87ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:01,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3581 Valid, 16471 Invalid, 110 Unknown, 0 Unchecked, 17.32ms Time], IncrementalHoareTripleChecker [25 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 150.87ms Time] [2021-11-05 19:29:01,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-11-05 19:29:01,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 2667. [2021-11-05 19:29:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2656 states have (on average 1.4107680722891567) internal successors, (3747), 2657 states have internal predecessors, (3747), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3759 transitions. [2021-11-05 19:29:01,231 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3759 transitions. Word has length 92 [2021-11-05 19:29:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:01,232 INFO L470 AbstractCegarLoop]: Abstraction has 2667 states and 3759 transitions. [2021-11-05 19:29:01,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 19:29:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3759 transitions. [2021-11-05 19:29:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 19:29:01,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:01,243 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] [2021-11-05 19:29:01,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 19:29:01,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1503123760, now seen corresponding path program 1 times [2021-11-05 19:29:01,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:01,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191173696] [2021-11-05 19:29:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:01,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:01,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:01,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191173696] [2021-11-05 19:29:01,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191173696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:01,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:01,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:29:01,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194060976] [2021-11-05 19:29:01,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:01,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:29:01,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:29:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:29:01,590 INFO L87 Difference]: Start difference. First operand 2667 states and 3759 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 19:29:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:02,530 INFO L93 Difference]: Finished difference Result 11619 states and 16612 transitions. [2021-11-05 19:29:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 19:29:02,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 97 [2021-11-05 19:29:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:02,556 INFO L225 Difference]: With dead ends: 11619 [2021-11-05 19:29:02,556 INFO L226 Difference]: Without dead ends: 8971 [2021-11-05 19:29:02,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.23ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 19:29:02,564 INFO L933 BasicCegarLoop]: 4218 mSDtfsCounter, 6735 mSDsluCounter, 12756 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 250.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6740 SdHoareTripleChecker+Valid, 16974 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.40ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 279.39ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:02,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6740 Valid, 16974 Invalid, 178 Unknown, 0 Unchecked, 23.40ms Time], IncrementalHoareTripleChecker [24 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 279.39ms Time] [2021-11-05 19:29:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2021-11-05 19:29:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 2670. [2021-11-05 19:29:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2659 states have (on average 1.4103046257991727) internal successors, (3750), 2660 states have internal predecessors, (3750), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3762 transitions. [2021-11-05 19:29:02,708 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3762 transitions. Word has length 97 [2021-11-05 19:29:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:02,708 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 3762 transitions. [2021-11-05 19:29:02,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 19:29:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3762 transitions. [2021-11-05 19:29:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-05 19:29:02,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:02,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:02,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 19:29:02,715 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:02,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash 76208488, now seen corresponding path program 1 times [2021-11-05 19:29:02,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:02,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674236234] [2021-11-05 19:29:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:02,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:02,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:02,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674236234] [2021-11-05 19:29:02,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674236234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:02,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:02,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 19:29:02,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360654399] [2021-11-05 19:29:02,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:02,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:29:02,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:02,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:29:02,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 19:29:02,935 INFO L87 Difference]: Start difference. First operand 2670 states and 3762 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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 19:29:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:03,727 INFO L93 Difference]: Finished difference Result 7694 states and 10954 transitions. [2021-11-05 19:29:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:29:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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 103 [2021-11-05 19:29:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:03,749 INFO L225 Difference]: With dead ends: 7694 [2021-11-05 19:29:03,749 INFO L226 Difference]: Without dead ends: 5043 [2021-11-05 19:29:03,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.90ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:29:03,759 INFO L933 BasicCegarLoop]: 4020 mSDtfsCounter, 2229 mSDsluCounter, 7271 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 466.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 11291 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.05ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 504.12ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:03,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2231 Valid, 11291 Invalid, 128 Unknown, 0 Unchecked, 11.05ms Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 504.12ms Time] [2021-11-05 19:29:03,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5043 states. [2021-11-05 19:29:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5043 to 2680. [2021-11-05 19:29:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2669 states have (on average 1.408767328587486) internal successors, (3760), 2670 states have internal predecessors, (3760), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3772 transitions. [2021-11-05 19:29:03,897 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3772 transitions. Word has length 103 [2021-11-05 19:29:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:03,898 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 3772 transitions. [2021-11-05 19:29:03,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 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 19:29:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3772 transitions. [2021-11-05 19:29:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-05 19:29:03,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:03,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:03,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 19:29:03,906 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1194987352, now seen corresponding path program 1 times [2021-11-05 19:29:03,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:03,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971307332] [2021-11-05 19:29:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:03,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:04,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:04,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971307332] [2021-11-05 19:29:04,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971307332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:04,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:04,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:29:04,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767215995] [2021-11-05 19:29:04,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:04,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:04,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:04,101 INFO L87 Difference]: Start difference. First operand 2680 states and 3772 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:04,300 INFO L93 Difference]: Finished difference Result 5653 states and 7964 transitions. [2021-11-05 19:29:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:04,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-05 19:29:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:04,310 INFO L225 Difference]: With dead ends: 5653 [2021-11-05 19:29:04,311 INFO L226 Difference]: Without dead ends: 2992 [2021-11-05 19:29:04,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:04,318 INFO L933 BasicCegarLoop]: 3494 mSDtfsCounter, 375 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.55ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:04,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 6582 Invalid, 30 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 53.55ms Time] [2021-11-05 19:29:04,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2021-11-05 19:29:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2680. [2021-11-05 19:29:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2669 states have (on average 1.4080179842637692) internal successors, (3758), 2670 states have internal predecessors, (3758), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3770 transitions. [2021-11-05 19:29:04,441 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3770 transitions. Word has length 107 [2021-11-05 19:29:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:04,442 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 3770 transitions. [2021-11-05 19:29:04,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3770 transitions. [2021-11-05 19:29:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-05 19:29:04,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:04,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:04,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 19:29:04,449 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1165161620, now seen corresponding path program 1 times [2021-11-05 19:29:04,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:04,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988586940] [2021-11-05 19:29:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:04,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:04,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:04,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988586940] [2021-11-05 19:29:04,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988586940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:04,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:04,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 19:29:04,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375966204] [2021-11-05 19:29:04,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:04,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:29:04,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:04,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:29:04,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:04,706 INFO L87 Difference]: Start difference. First operand 2680 states and 3770 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 19:29:06,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:06,583 INFO L93 Difference]: Finished difference Result 11289 states and 16092 transitions. [2021-11-05 19:29:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 19:29:06,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 109 [2021-11-05 19:29:06,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:06,621 INFO L225 Difference]: With dead ends: 11289 [2021-11-05 19:29:06,622 INFO L226 Difference]: Without dead ends: 8628 [2021-11-05 19:29:06,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 177.97ms TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-05 19:29:06,637 INFO L933 BasicCegarLoop]: 4059 mSDtfsCounter, 8067 mSDsluCounter, 20941 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 977.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8070 SdHoareTripleChecker+Valid, 25000 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.74ms SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1090.42ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:06,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8070 Valid, 25000 Invalid, 692 Unknown, 0 Unchecked, 24.74ms Time], IncrementalHoareTripleChecker [117 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1090.42ms Time] [2021-11-05 19:29:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8628 states. [2021-11-05 19:29:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8628 to 2725. [2021-11-05 19:29:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2714 states have (on average 1.4060427413411938) internal successors, (3816), 2715 states have internal predecessors, (3816), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3828 transitions. [2021-11-05 19:29:06,829 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3828 transitions. Word has length 109 [2021-11-05 19:29:06,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:06,829 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3828 transitions. [2021-11-05 19:29:06,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 19:29:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3828 transitions. [2021-11-05 19:29:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-05 19:29:06,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:06,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:06,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 19:29:06,839 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash -103991380, now seen corresponding path program 1 times [2021-11-05 19:29:06,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:06,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758143384] [2021-11-05 19:29:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:06,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:07,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:07,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758143384] [2021-11-05 19:29:07,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758143384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:07,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:07,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:29:07,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306713993] [2021-11-05 19:29:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:07,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:07,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:07,040 INFO L87 Difference]: Start difference. First operand 2725 states and 3828 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:07,306 INFO L93 Difference]: Finished difference Result 5737 states and 8069 transitions. [2021-11-05 19:29:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-05 19:29:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:07,319 INFO L225 Difference]: With dead ends: 5737 [2021-11-05 19:29:07,319 INFO L226 Difference]: Without dead ends: 3031 [2021-11-05 19:29:07,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:07,328 INFO L933 BasicCegarLoop]: 3491 mSDtfsCounter, 382 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 6559 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.90ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:07,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 6559 Invalid, 29 Unknown, 0 Unchecked, 4.72ms Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 67.90ms Time] [2021-11-05 19:29:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-11-05 19:29:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2725. [2021-11-05 19:29:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 2714 states have (on average 1.4053058216654384) internal successors, (3814), 2715 states have internal predecessors, (3814), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 3826 transitions. [2021-11-05 19:29:07,487 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 3826 transitions. Word has length 121 [2021-11-05 19:29:07,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:07,488 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 3826 transitions. [2021-11-05 19:29:07,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 3826 transitions. [2021-11-05 19:29:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-05 19:29:07,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:07,497 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:07,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 19:29:07,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:07,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1010335272, now seen corresponding path program 1 times [2021-11-05 19:29:07,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:07,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641584338] [2021-11-05 19:29:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:07,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:08,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:08,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641584338] [2021-11-05 19:29:08,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641584338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:08,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:08,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:29:08,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268910955] [2021-11-05 19:29:08,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:08,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:08,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:08,472 INFO L87 Difference]: Start difference. First operand 2725 states and 3826 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 19:29:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:09,024 INFO L93 Difference]: Finished difference Result 5435 states and 7637 transitions. [2021-11-05 19:29:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:09,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 123 [2021-11-05 19:29:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:09,036 INFO L225 Difference]: With dead ends: 5435 [2021-11-05 19:29:09,036 INFO L226 Difference]: Without dead ends: 2726 [2021-11-05 19:29:09,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:09,045 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 0 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 373.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 404.03ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:09,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6358 Invalid, 57 Unknown, 0 Unchecked, 4.42ms Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 404.03ms Time] [2021-11-05 19:29:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2021-11-05 19:29:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2726. [2021-11-05 19:29:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2715 states have (on average 1.405156537753223) internal successors, (3815), 2716 states have internal predecessors, (3815), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3827 transitions. [2021-11-05 19:29:09,199 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3827 transitions. Word has length 123 [2021-11-05 19:29:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:09,199 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 3827 transitions. [2021-11-05 19:29:09,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 19:29:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3827 transitions. [2021-11-05 19:29:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 19:29:09,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:09,209 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:09,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 19:29:09,209 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:09,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2143153690, now seen corresponding path program 1 times [2021-11-05 19:29:09,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:09,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20728427] [2021-11-05 19:29:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:09,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 19:29:09,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:09,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20728427] [2021-11-05 19:29:09,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20728427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:09,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448530091] [2021-11-05 19:29:09,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:09,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:09,675 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 19:29:09,704 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 19:29:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:10,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-05 19:29:10,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:10,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:29:10,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448530091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:10,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:29:10,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 19:29:10,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937269344] [2021-11-05 19:29:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:10,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:29:10,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:29:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:10,828 INFO L87 Difference]: Start difference. First operand 2726 states and 3827 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 19:29:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:11,628 INFO L93 Difference]: Finished difference Result 10074 states and 14271 transitions. [2021-11-05 19:29:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 19:29:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 19:29:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:11,654 INFO L225 Difference]: With dead ends: 10074 [2021-11-05 19:29:11,654 INFO L226 Difference]: Without dead ends: 7368 [2021-11-05 19:29:11,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 50.80ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-05 19:29:11,666 INFO L933 BasicCegarLoop]: 3990 mSDtfsCounter, 6946 mSDsluCounter, 11917 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6949 SdHoareTripleChecker+Valid, 15907 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.45ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.16ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:11,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6949 Valid, 15907 Invalid, 38 Unknown, 0 Unchecked, 14.45ms Time], IncrementalHoareTripleChecker [13 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 56.16ms Time] [2021-11-05 19:29:11,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2021-11-05 19:29:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 2726. [2021-11-05 19:29:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2715 states have (on average 1.405156537753223) internal successors, (3815), 2716 states have internal predecessors, (3815), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3827 transitions. [2021-11-05 19:29:11,896 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3827 transitions. Word has length 124 [2021-11-05 19:29:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:11,896 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 3827 transitions. [2021-11-05 19:29:11,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 19:29:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3827 transitions. [2021-11-05 19:29:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 19:29:11,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:11,905 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:11,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:12,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-05 19:29:12,120 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1345235590, now seen corresponding path program 1 times [2021-11-05 19:29:12,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:12,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805419507] [2021-11-05 19:29:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:12,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:12,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:12,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805419507] [2021-11-05 19:29:12,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805419507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:12,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:12,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:29:12,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395152616] [2021-11-05 19:29:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:12,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:12,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:12,260 INFO L87 Difference]: Start difference. First operand 2726 states and 3827 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 19:29:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:12,424 INFO L93 Difference]: Finished difference Result 5433 states and 7635 transitions. [2021-11-05 19:29:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 19:29:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:12,432 INFO L225 Difference]: With dead ends: 5433 [2021-11-05 19:29:12,432 INFO L226 Difference]: Without dead ends: 2727 [2021-11-05 19:29:12,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:12,442 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 0 mSDsluCounter, 3202 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.96ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:12,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6409 Invalid, 6 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.96ms Time] [2021-11-05 19:29:12,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-11-05 19:29:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2727. [2021-11-05 19:29:12,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2716 states have (on average 1.4050073637702503) internal successors, (3816), 2717 states have internal predecessors, (3816), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3828 transitions. [2021-11-05 19:29:12,601 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3828 transitions. Word has length 137 [2021-11-05 19:29:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:12,601 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3828 transitions. [2021-11-05 19:29:12,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 19:29:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3828 transitions. [2021-11-05 19:29:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 19:29:12,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:12,611 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:12,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 19:29:12,611 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 900343864, now seen corresponding path program 1 times [2021-11-05 19:29:12,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:12,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921987392] [2021-11-05 19:29:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:12,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:12,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:12,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921987392] [2021-11-05 19:29:12,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921987392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:12,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:29:12,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:29:12,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366013288] [2021-11-05 19:29:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:12,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:12,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:12,740 INFO L87 Difference]: Start difference. First operand 2727 states and 3828 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 19:29:12,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:12,905 INFO L93 Difference]: Finished difference Result 5436 states and 7638 transitions. [2021-11-05 19:29:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:12,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 19:29:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:12,918 INFO L225 Difference]: With dead ends: 5436 [2021-11-05 19:29:12,918 INFO L226 Difference]: Without dead ends: 2729 [2021-11-05 19:29:12,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:29:12,923 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 1 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6409 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.61ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:12,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6409 Invalid, 6 Unknown, 0 Unchecked, 3.72ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 11.61ms Time] [2021-11-05 19:29:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-11-05 19:29:13,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2728. [2021-11-05 19:29:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2717 states have (on average 1.4048582995951417) internal successors, (3817), 2718 states have internal predecessors, (3817), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3829 transitions. [2021-11-05 19:29:13,079 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3829 transitions. Word has length 137 [2021-11-05 19:29:13,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:13,080 INFO L470 AbstractCegarLoop]: Abstraction has 2728 states and 3829 transitions. [2021-11-05 19:29:13,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 19:29:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3829 transitions. [2021-11-05 19:29:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 19:29:13,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:13,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:13,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 19:29:13,087 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:13,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash 86919636, now seen corresponding path program 1 times [2021-11-05 19:29:13,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:13,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129886431] [2021-11-05 19:29:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:13,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:13,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:13,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129886431] [2021-11-05 19:29:13,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129886431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:13,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882944136] [2021-11-05 19:29:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:13,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:13,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:13,220 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 19:29:13,243 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 19:29:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:14,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:29:14,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:29:14,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:29:14,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882944136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:14,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:29:14,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-05 19:29:14,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157760923] [2021-11-05 19:29:14,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:14,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:29:14,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:29:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:29:14,252 INFO L87 Difference]: Start difference. First operand 2728 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:14,448 INFO L93 Difference]: Finished difference Result 5446 states and 7652 transitions. [2021-11-05 19:29:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:29:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-05 19:29:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:14,456 INFO L225 Difference]: With dead ends: 5446 [2021-11-05 19:29:14,456 INFO L226 Difference]: Without dead ends: 2738 [2021-11-05 19:29:14,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.58ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:14,461 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 12 mSDsluCounter, 6404 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9609 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.66ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:14,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 9609 Invalid, 17 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 17.66ms Time] [2021-11-05 19:29:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-05 19:29:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2730. [2021-11-05 19:29:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2719 states have (on average 1.4045605001838912) internal successors, (3819), 2720 states have internal predecessors, (3819), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3831 transitions. [2021-11-05 19:29:14,664 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3831 transitions. Word has length 139 [2021-11-05 19:29:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:14,664 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3831 transitions. [2021-11-05 19:29:14,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3831 transitions. [2021-11-05 19:29:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 19:29:14,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:14,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:14,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 19:29:14,899 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,SelfDestructingSolverStorable16 [2021-11-05 19:29:14,899 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1852242410, now seen corresponding path program 1 times [2021-11-05 19:29:14,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:14,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082635063] [2021-11-05 19:29:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:14,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:15,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:15,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082635063] [2021-11-05 19:29:15,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082635063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:15,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980331297] [2021-11-05 19:29:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:15,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:15,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:15,026 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 19:29:15,035 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 19:29:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:15,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:29:15,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 19:29:15,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:29:15,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980331297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:15,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:29:15,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-05 19:29:15,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361788167] [2021-11-05 19:29:15,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 19:29:15,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 19:29:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 19:29:15,947 INFO L87 Difference]: Start difference. First operand 2730 states and 3831 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:16,082 INFO L93 Difference]: Finished difference Result 5443 states and 7645 transitions. [2021-11-05 19:29:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:29:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-05 19:29:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:16,091 INFO L225 Difference]: With dead ends: 5443 [2021-11-05 19:29:16,091 INFO L226 Difference]: Without dead ends: 2733 [2021-11-05 19:29:16,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.72ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:16,099 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3 mSDsluCounter, 6403 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9608 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.76ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:16,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9608 Invalid, 15 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 14.76ms Time] [2021-11-05 19:29:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2021-11-05 19:29:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2732. [2021-11-05 19:29:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2721 states have (on average 1.404263138552003) internal successors, (3821), 2722 states have internal predecessors, (3821), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3833 transitions. [2021-11-05 19:29:16,258 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3833 transitions. Word has length 139 [2021-11-05 19:29:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:16,258 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3833 transitions. [2021-11-05 19:29:16,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3833 transitions. [2021-11-05 19:29:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-05 19:29:16,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:16,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:16,297 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 19:29:16,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-05 19:29:16,488 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:16,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -394160622, now seen corresponding path program 1 times [2021-11-05 19:29:16,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:16,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663794126] [2021-11-05 19:29:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:16,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:16,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:16,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663794126] [2021-11-05 19:29:16,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663794126] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:16,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440162814] [2021-11-05 19:29:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:16,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:16,618 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 19:29:16,620 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 19:29:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:17,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 19:29:17,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:17,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:17,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440162814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:29:17,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:29:17,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 19:29:17,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595265752] [2021-11-05 19:29:17,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:29:17,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 19:29:17,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 19:29:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:17,786 INFO L87 Difference]: Start difference. First operand 2732 states and 3833 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 19:29:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:17,937 INFO L93 Difference]: Finished difference Result 5450 states and 7654 transitions. [2021-11-05 19:29:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 19:29:17,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-05 19:29:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:17,945 INFO L225 Difference]: With dead ends: 5450 [2021-11-05 19:29:17,945 INFO L226 Difference]: Without dead ends: 2738 [2021-11-05 19:29:17,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.93ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 19:29:17,951 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 6 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.86ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:17,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 9612 Invalid, 20 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 26.86ms Time] [2021-11-05 19:29:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-05 19:29:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2738. [2021-11-05 19:29:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2738 states, 2727 states have (on average 1.4033736707004034) internal successors, (3827), 2728 states have internal predecessors, (3827), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2738 states to 2738 states and 3839 transitions. [2021-11-05 19:29:18,109 INFO L78 Accepts]: Start accepts. Automaton has 2738 states and 3839 transitions. Word has length 139 [2021-11-05 19:29:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:18,110 INFO L470 AbstractCegarLoop]: Abstraction has 2738 states and 3839 transitions. [2021-11-05 19:29:18,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 19:29:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2738 states and 3839 transitions. [2021-11-05 19:29:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 19:29:18,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:18,116 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:18,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:18,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:18,343 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1412598374, now seen corresponding path program 2 times [2021-11-05 19:29:18,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:18,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637069801] [2021-11-05 19:29:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:18,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 19:29:18,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:18,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637069801] [2021-11-05 19:29:18,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637069801] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:18,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209441287] [2021-11-05 19:29:18,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:29:18,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:18,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:18,564 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 19:29:18,565 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 19:29:25,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:29:25,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:29:25,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 19:29:25,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-05 19:29:26,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:29:26,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209441287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:26,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:29:26,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-11-05 19:29:26,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083124867] [2021-11-05 19:29:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:26,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:26,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:29:26,131 INFO L87 Difference]: Start difference. First operand 2738 states and 3839 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 19:29:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:26,424 INFO L93 Difference]: Finished difference Result 5469 states and 7683 transitions. [2021-11-05 19:29:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:26,425 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 145 [2021-11-05 19:29:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:26,433 INFO L225 Difference]: With dead ends: 5469 [2021-11-05 19:29:26,433 INFO L226 Difference]: Without dead ends: 2751 [2021-11-05 19:29:26,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.19ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-05 19:29:26,439 INFO L933 BasicCegarLoop]: 3199 mSDtfsCounter, 0 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 118.79ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:26,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6350 Invalid, 73 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [16 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 118.79ms Time] [2021-11-05 19:29:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-11-05 19:29:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2751. [2021-11-05 19:29:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2740 states have (on average 1.4014598540145986) internal successors, (3840), 2741 states have internal predecessors, (3840), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3852 transitions. [2021-11-05 19:29:26,686 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3852 transitions. Word has length 145 [2021-11-05 19:29:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:26,687 INFO L470 AbstractCegarLoop]: Abstraction has 2751 states and 3852 transitions. [2021-11-05 19:29:26,687 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 19:29:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3852 transitions. [2021-11-05 19:29:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-05 19:29:26,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:26,698 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:26,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 19:29:26,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:26,907 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash 698373428, now seen corresponding path program 1 times [2021-11-05 19:29:26,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:26,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408262056] [2021-11-05 19:29:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:26,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 19:29:27,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:27,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408262056] [2021-11-05 19:29:27,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408262056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:27,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746334175] [2021-11-05 19:29:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:27,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:27,119 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 19:29:27,139 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 19:29:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:27,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 19:29:27,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 19:29:28,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 19:29:28,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746334175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:29:28,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:29:28,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-05 19:29:28,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95301892] [2021-11-05 19:29:28,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:29:28,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 19:29:28,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 19:29:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-05 19:29:28,333 INFO L87 Difference]: Start difference. First operand 2751 states and 3852 transitions. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:28,519 INFO L93 Difference]: Finished difference Result 5494 states and 7701 transitions. [2021-11-05 19:29:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 19:29:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-05 19:29:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:28,525 INFO L225 Difference]: With dead ends: 5494 [2021-11-05 19:29:28,525 INFO L226 Difference]: Without dead ends: 2763 [2021-11-05 19:29:28,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 54.03ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-05 19:29:28,533 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 15 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.35ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:28,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 9612 Invalid, 35 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 38.35ms Time] [2021-11-05 19:29:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2021-11-05 19:29:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2021-11-05 19:29:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2752 states have (on average 1.3997093023255813) internal successors, (3852), 2753 states have internal predecessors, (3852), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3864 transitions. [2021-11-05 19:29:28,706 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3864 transitions. Word has length 147 [2021-11-05 19:29:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:28,707 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 3864 transitions. [2021-11-05 19:29:28,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3864 transitions. [2021-11-05 19:29:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-05 19:29:28,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:28,712 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:28,746 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 19:29:28,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:28,928 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:28,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1131756428, now seen corresponding path program 2 times [2021-11-05 19:29:28,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:28,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157804769] [2021-11-05 19:29:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:28,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 19:29:29,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:29,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157804769] [2021-11-05 19:29:29,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157804769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:29,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420891368] [2021-11-05 19:29:29,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:29:29,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:29,234 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 19:29:29,236 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 19:29:42,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 19:29:42,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 19:29:42,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 19:29:42,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-05 19:29:42,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 19:29:42,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420891368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:29:42,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 19:29:42,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-11-05 19:29:42,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894107598] [2021-11-05 19:29:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:29:42,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:29:42,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:29:42,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-05 19:29:42,960 INFO L87 Difference]: Start difference. First operand 2763 states and 3864 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:43,344 INFO L93 Difference]: Finished difference Result 5507 states and 7709 transitions. [2021-11-05 19:29:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:29:43,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-05 19:29:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:43,351 INFO L225 Difference]: With dead ends: 5507 [2021-11-05 19:29:43,352 INFO L226 Difference]: Without dead ends: 2764 [2021-11-05 19:29:43,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 83.87ms TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-11-05 19:29:43,356 INFO L933 BasicCegarLoop]: 3207 mSDtfsCounter, 0 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6358 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 252.89ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:43,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6358 Invalid, 57 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 252.89ms Time] [2021-11-05 19:29:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-11-05 19:29:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2021-11-05 19:29:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2753 states have (on average 1.3995641118779514) internal successors, (3853), 2754 states have internal predecessors, (3853), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3865 transitions. [2021-11-05 19:29:43,518 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3865 transitions. Word has length 159 [2021-11-05 19:29:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:43,518 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3865 transitions. [2021-11-05 19:29:43,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:29:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3865 transitions. [2021-11-05 19:29:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-05 19:29:43,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:43,523 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:43,552 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 19:29:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:43,739 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1098054863, now seen corresponding path program 1 times [2021-11-05 19:29:43,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:43,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702712745] [2021-11-05 19:29:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:29:44,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:44,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702712745] [2021-11-05 19:29:44,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702712745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:44,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538656728] [2021-11-05 19:29:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:44,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:44,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:44,006 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 19:29:44,007 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 19:29:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:44,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2781 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 19:29:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 19:29:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:29:44,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 19:29:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:29:45,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538656728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 19:29:45,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 19:29:45,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-05 19:29:45,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705194247] [2021-11-05 19:29:45,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 19:29:45,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 19:29:45,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:29:45,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 19:29:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-05 19:29:45,357 INFO L87 Difference]: Start difference. First operand 2764 states and 3865 transitions. Second operand has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 19:29:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:29:45,637 INFO L93 Difference]: Finished difference Result 5532 states and 7745 transitions. [2021-11-05 19:29:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 19:29:45,638 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 0 states have call successors, (0), 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 160 [2021-11-05 19:29:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:29:45,643 INFO L225 Difference]: With dead ends: 5532 [2021-11-05 19:29:45,643 INFO L226 Difference]: Without dead ends: 2788 [2021-11-05 19:29:45,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 211.58ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-05 19:29:45,648 INFO L933 BasicCegarLoop]: 3206 mSDtfsCounter, 33 mSDsluCounter, 12812 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 16018 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.55ms IncrementalHoareTripleChecker+Time [2021-11-05 19:29:45,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 16018 Invalid, 69 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 62.55ms Time] [2021-11-05 19:29:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-11-05 19:29:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2788. [2021-11-05 19:29:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2777 states have (on average 1.3961109110550953) internal successors, (3877), 2778 states have internal predecessors, (3877), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-05 19:29:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3889 transitions. [2021-11-05 19:29:45,782 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3889 transitions. Word has length 160 [2021-11-05 19:29:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:29:45,782 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3889 transitions. [2021-11-05 19:29:45,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 19:29:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3889 transitions. [2021-11-05 19:29:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-05 19:29:45,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:29:45,786 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 19:29:45,807 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 19:29:45,986 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,SelfDestructingSolverStorable22 [2021-11-05 19:29:45,987 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 19:29:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:29:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -458647423, now seen corresponding path program 2 times [2021-11-05 19:29:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:29:45,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081629503] [2021-11-05 19:29:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:29:45,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:29:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:29:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-05 19:29:46,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:29:46,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081629503] [2021-11-05 19:29:46,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081629503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 19:29:46,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39871834] [2021-11-05 19:29:46,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 19:29:46,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 19:29:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:29:46,493 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 19:29:46,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Killed by 15