./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-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-08_1a-drivers--iio--accel--kxcjk-1013.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 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:42:02,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:42:02,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:42:02,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:42:02,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:42:02,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:42:02,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:42:02,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:42:02,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:42:02,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:42:02,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:42:02,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:42:02,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:42:02,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:42:02,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:42:02,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:42:02,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:42:02,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:42:02,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:42:02,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:42:02,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:42:02,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:42:02,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:42:02,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:42:02,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:42:02,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:42:02,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:42:02,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:42:02,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:42:02,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:42:02,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:42:02,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:42:02,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:42:02,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:42:02,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:42:02,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:42:02,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:42:02,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:42:02,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:42:02,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:42:02,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:42:02,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:42:02,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:42:02,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:42:02,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:42:02,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:42:02,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:42:02,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:42:02,167 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:42:02,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:42:02,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:42:02,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:42:02,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:42:02,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:42:02,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:42:02,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:42:02,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:42:02,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:42:02,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:42:02,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:42:02,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:42:02,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:42:02,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:42:02,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:42:02,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:42:02,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:42:02,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:42:02,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:42:02,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:42:02,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:42:02,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:42:02,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 [2021-11-06 15:42:02,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:42:02,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:42:02,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:42:02,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:42:02,369 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:42:02,370 INFO L432 ainManager$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-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2021-11-06 15:42:02,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcddb81e0/923d226babfd42b4b44ce75fbef59261/FLAG4c3de4190 [2021-11-06 15:42:02,965 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:42:02,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2021-11-06 15:42:02,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcddb81e0/923d226babfd42b4b44ce75fbef59261/FLAG4c3de4190 [2021-11-06 15:42:03,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcddb81e0/923d226babfd42b4b44ce75fbef59261 [2021-11-06 15:42:03,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:42:03,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:42:03,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:42:03,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:42:03,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:42:03,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:42:03" (1/1) ... [2021-11-06 15:42:03,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77431780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:03, skipping insertion in model container [2021-11-06 15:42:03,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:42:03" (1/1) ... [2021-11-06 15:42:03,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:42:03,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:42:04,435 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-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2021-11-06 15:42:04,449 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 15:42:04,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:42:04,484 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:42:04,654 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-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2021-11-06 15:42:04,659 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 15:42:04,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:42:04,787 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:42:04,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04 WrapperNode [2021-11-06 15:42:04,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:42:04,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:42:04,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:42:04,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:42:04,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:04,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:42:05,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:42:05,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:42:05,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:42:05,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:42:05,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:42:05,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:42:05,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:42:05,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (1/1) ... [2021-11-06 15:42:05,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:42:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:42:05,458 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) [2021-11-06 15:42:05,502 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 [2021-11-06 15:42:05,518 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-06 15:42:05,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:42:05,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:42:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:42:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:42:05,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:42:05,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:42:31,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:42:31,838 INFO L299 CfgBuilder]: Removed 1852 assume(true) statements. [2021-11-06 15:42:31,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:42:31 BoogieIcfgContainer [2021-11-06 15:42:31,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:42:31,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:42:31,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:42:31,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:42:31,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:42:03" (1/3) ... [2021-11-06 15:42:31,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365e9fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:42:31, skipping insertion in model container [2021-11-06 15:42:31,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:04" (2/3) ... [2021-11-06 15:42:31,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365e9fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:42:31, skipping insertion in model container [2021-11-06 15:42:31,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:42:31" (3/3) ... [2021-11-06 15:42:31,864 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2021-11-06 15:42:31,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:42:31,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 15:42:31,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:42:31,918 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 [2021-11-06 15:42:31,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 15:42:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 2066 states, 2064 states have (on average 1.43265503875969) internal successors, (2957), 2065 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 15:42:31,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:31,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:31,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:31,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:31,975 INFO L85 PathProgramCache]: Analyzing trace with hash -192666553, now seen corresponding path program 1 times [2021-11-06 15:42:31,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:31,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798911005] [2021-11-06 15:42:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:31,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:42:32,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:32,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798911005] [2021-11-06 15:42:32,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798911005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:32,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:42:32,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:42:32,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23475326] [2021-11-06 15:42:32,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:42:32,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:42:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:42:32,549 INFO L87 Difference]: Start difference. First operand has 2066 states, 2064 states have (on average 1.43265503875969) internal successors, (2957), 2065 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:32,631 INFO L93 Difference]: Finished difference Result 4128 states and 5909 transitions. [2021-11-06 15:42:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:42:32,633 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 15:42:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:32,653 INFO L225 Difference]: With dead ends: 4128 [2021-11-06 15:42:32,653 INFO L226 Difference]: Without dead ends: 2043 [2021-11-06 15:42:32,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:42:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2021-11-06 15:42:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2043. [2021-11-06 15:42:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 2042 states have (on average 1.4147894221351616) internal successors, (2889), 2042 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2889 transitions. [2021-11-06 15:42:32,738 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2889 transitions. Word has length 118 [2021-11-06 15:42:32,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:32,738 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 2889 transitions. [2021-11-06 15:42:32,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2889 transitions. [2021-11-06 15:42:32,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-06 15:42:32,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:32,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:32,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:42:32,741 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 687142361, now seen corresponding path program 1 times [2021-11-06 15:42:32,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:32,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765584752] [2021-11-06 15:42:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:32,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:42:33,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:33,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765584752] [2021-11-06 15:42:33,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765584752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:33,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:42:33,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:42:33,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186913653] [2021-11-06 15:42:33,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:42:33,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:33,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:42:33,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:42:33,006 INFO L87 Difference]: Start difference. First operand 2043 states and 2889 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:35,387 INFO L93 Difference]: Finished difference Result 5897 states and 8399 transitions. [2021-11-06 15:42:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:42:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-06 15:42:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:35,401 INFO L225 Difference]: With dead ends: 5897 [2021-11-06 15:42:35,402 INFO L226 Difference]: Without dead ends: 3955 [2021-11-06 15:42:35,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:42:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-11-06 15:42:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3955. [2021-11-06 15:42:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3955 states, 3954 states have (on average 1.422862923621649) internal successors, (5626), 3954 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5626 transitions. [2021-11-06 15:42:35,484 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5626 transitions. Word has length 118 [2021-11-06 15:42:35,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:35,487 INFO L470 AbstractCegarLoop]: Abstraction has 3955 states and 5626 transitions. [2021-11-06 15:42:35,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5626 transitions. [2021-11-06 15:42:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 15:42:35,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:35,491 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:35,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:42:35,491 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 104069193, now seen corresponding path program 1 times [2021-11-06 15:42:35,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:35,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127885162] [2021-11-06 15:42:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:35,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:42:35,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:35,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127885162] [2021-11-06 15:42:35,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127885162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:35,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:42:35,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:42:35,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65120365] [2021-11-06 15:42:35,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:42:35,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:42:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:42:35,804 INFO L87 Difference]: Start difference. First operand 3955 states and 5626 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 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) [2021-11-06 15:42:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:35,913 INFO L93 Difference]: Finished difference Result 7809 states and 11133 transitions. [2021-11-06 15:42:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:42:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 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 122 [2021-11-06 15:42:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:35,940 INFO L225 Difference]: With dead ends: 7809 [2021-11-06 15:42:35,941 INFO L226 Difference]: Without dead ends: 7805 [2021-11-06 15:42:35,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:42:35,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7805 states. [2021-11-06 15:42:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7805 to 7805. [2021-11-06 15:42:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7805 states, 7804 states have (on average 1.425807278318811) internal successors, (11127), 7804 states have internal predecessors, (11127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 11127 transitions. [2021-11-06 15:42:36,107 INFO L78 Accepts]: Start accepts. Automaton has 7805 states and 11127 transitions. Word has length 122 [2021-11-06 15:42:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:36,108 INFO L470 AbstractCegarLoop]: Abstraction has 7805 states and 11127 transitions. [2021-11-06 15:42:36,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 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) [2021-11-06 15:42:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7805 states and 11127 transitions. [2021-11-06 15:42:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-06 15:42:36,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:36,122 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:42:36,123 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:36,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2130557170, now seen corresponding path program 1 times [2021-11-06 15:42:36,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:36,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940923841] [2021-11-06 15:42:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:36,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:42:36,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:36,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940923841] [2021-11-06 15:42:36,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940923841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:36,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:42:36,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:42:36,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760108920] [2021-11-06 15:42:36,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:42:36,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:42:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:42:36,336 INFO L87 Difference]: Start difference. First operand 7805 states and 11127 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:36,598 INFO L93 Difference]: Finished difference Result 22269 states and 31890 transitions. [2021-11-06 15:42:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:42:36,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-06 15:42:36,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:36,772 INFO L225 Difference]: With dead ends: 22269 [2021-11-06 15:42:36,772 INFO L226 Difference]: Without dead ends: 14565 [2021-11-06 15:42:36,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:42:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14565 states. [2021-11-06 15:42:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14565 to 14561. [2021-11-06 15:42:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14561 states, 14560 states have (on average 1.4337225274725274) internal successors, (20875), 14560 states have internal predecessors, (20875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14561 states to 14561 states and 20875 transitions. [2021-11-06 15:42:37,063 INFO L78 Accepts]: Start accepts. Automaton has 14561 states and 20875 transitions. Word has length 180 [2021-11-06 15:42:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:37,064 INFO L470 AbstractCegarLoop]: Abstraction has 14561 states and 20875 transitions. [2021-11-06 15:42:37,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 14561 states and 20875 transitions. [2021-11-06 15:42:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-06 15:42:37,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:37,081 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:37,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:42:37,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:37,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:37,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1298696450, now seen corresponding path program 1 times [2021-11-06 15:42:37,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:37,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755451121] [2021-11-06 15:42:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:37,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:37,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:37,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755451121] [2021-11-06 15:42:37,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755451121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:42:37,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431716171] [2021-11-06 15:42:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:37,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:37,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:42:37,392 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) [2021-11-06 15:42:37,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:42:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:38,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 4202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:42:38,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:42:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431716171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:38,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:42:38,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 15:42:38,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445562421] [2021-11-06 15:42:38,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:42:38,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:42:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:42:38,687 INFO L87 Difference]: Start difference. First operand 14561 states and 20875 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:39,493 INFO L93 Difference]: Finished difference Result 70545 states and 101387 transitions. [2021-11-06 15:42:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:42:39,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 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 218 [2021-11-06 15:42:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:39,616 INFO L225 Difference]: With dead ends: 70545 [2021-11-06 15:42:39,616 INFO L226 Difference]: Without dead ends: 56085 [2021-11-06 15:42:39,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:42:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56085 states. [2021-11-06 15:42:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56085 to 14569. [2021-11-06 15:42:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14569 states, 14568 states have (on average 1.433484349258649) internal successors, (20883), 14568 states have internal predecessors, (20883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14569 states to 14569 states and 20883 transitions. [2021-11-06 15:42:40,295 INFO L78 Accepts]: Start accepts. Automaton has 14569 states and 20883 transitions. Word has length 218 [2021-11-06 15:42:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:40,296 INFO L470 AbstractCegarLoop]: Abstraction has 14569 states and 20883 transitions. [2021-11-06 15:42:40,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 14569 states and 20883 transitions. [2021-11-06 15:42:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-06 15:42:40,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:40,313 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:40,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 15:42:40,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:40,531 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1413250717, now seen corresponding path program 1 times [2021-11-06 15:42:40,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:40,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935967664] [2021-11-06 15:42:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:40,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:40,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:40,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935967664] [2021-11-06 15:42:40,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935967664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:42:40,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659518257] [2021-11-06 15:42:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:40,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:40,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:42:40,821 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) [2021-11-06 15:42:40,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:42:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:41,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 4484 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:42:41,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:42:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:42,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659518257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:42,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:42:42,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 15:42:42,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414798059] [2021-11-06 15:42:42,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:42:42,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:42:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:42:42,506 INFO L87 Difference]: Start difference. First operand 14569 states and 20883 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:44,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:44,062 INFO L93 Difference]: Finished difference Result 68709 states and 98555 transitions. [2021-11-06 15:42:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:42:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2021-11-06 15:42:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:44,167 INFO L225 Difference]: With dead ends: 68709 [2021-11-06 15:42:44,167 INFO L226 Difference]: Without dead ends: 54241 [2021-11-06 15:42:44,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:42:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54241 states. [2021-11-06 15:42:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54241 to 14585. [2021-11-06 15:42:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14585 states, 14584 states have (on average 1.4330087767416346) internal successors, (20899), 14584 states have internal predecessors, (20899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14585 states to 14585 states and 20899 transitions. [2021-11-06 15:42:44,856 INFO L78 Accepts]: Start accepts. Automaton has 14585 states and 20899 transitions. Word has length 245 [2021-11-06 15:42:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 14585 states and 20899 transitions. [2021-11-06 15:42:44,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 14585 states and 20899 transitions. [2021-11-06 15:42:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-06 15:42:44,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:44,872 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:44,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 15:42:45,090 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,SelfDestructingSolverStorable5 [2021-11-06 15:42:45,091 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1161637369, now seen corresponding path program 1 times [2021-11-06 15:42:45,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:45,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602970813] [2021-11-06 15:42:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:45,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:45,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:45,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602970813] [2021-11-06 15:42:45,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602970813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:42:45,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296214165] [2021-11-06 15:42:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:45,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:42:45,369 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) [2021-11-06 15:42:45,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 15:42:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:46,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 4542 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 15:42:46,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:42:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:46,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296214165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:46,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:42:46,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-06 15:42:46,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613600396] [2021-11-06 15:42:46,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:42:46,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:42:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:42:46,934 INFO L87 Difference]: Start difference. First operand 14585 states and 20899 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:48,103 INFO L93 Difference]: Finished difference Result 70817 states and 101699 transitions. [2021-11-06 15:42:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:42:48,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 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 253 [2021-11-06 15:42:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:48,216 INFO L225 Difference]: With dead ends: 70817 [2021-11-06 15:42:48,216 INFO L226 Difference]: Without dead ends: 56333 [2021-11-06 15:42:48,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:42:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56333 states. [2021-11-06 15:42:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56333 to 14593. [2021-11-06 15:42:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14593 states, 14592 states have (on average 1.4327713815789473) internal successors, (20907), 14592 states have internal predecessors, (20907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:49,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14593 states to 14593 states and 20907 transitions. [2021-11-06 15:42:49,128 INFO L78 Accepts]: Start accepts. Automaton has 14593 states and 20907 transitions. Word has length 253 [2021-11-06 15:42:49,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:49,128 INFO L470 AbstractCegarLoop]: Abstraction has 14593 states and 20907 transitions. [2021-11-06 15:42:49,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:49,129 INFO L276 IsEmpty]: Start isEmpty. Operand 14593 states and 20907 transitions. [2021-11-06 15:42:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-06 15:42:49,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:49,145 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:49,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 15:42:49,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:49,362 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:49,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1223929376, now seen corresponding path program 1 times [2021-11-06 15:42:49,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:49,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762461551] [2021-11-06 15:42:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:49,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:49,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:49,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762461551] [2021-11-06 15:42:49,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762461551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:42:49,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336149891] [2021-11-06 15:42:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:49,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:42:49,646 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) [2021-11-06 15:42:49,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 15:42:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:50,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 4572 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:42:50,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:42:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:51,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336149891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:51,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:42:51,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 15:42:51,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040840289] [2021-11-06 15:42:51,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:42:51,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:42:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:42:51,515 INFO L87 Difference]: Start difference. First operand 14593 states and 20907 transitions. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:42:54,700 INFO L93 Difference]: Finished difference Result 43579 states and 62484 transitions. [2021-11-06 15:42:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:42:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 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 255 [2021-11-06 15:42:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:42:54,782 INFO L225 Difference]: With dead ends: 43579 [2021-11-06 15:42:54,782 INFO L226 Difference]: Without dead ends: 43575 [2021-11-06 15:42:54,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:42:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43575 states. [2021-11-06 15:42:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43575 to 43141. [2021-11-06 15:42:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43141 states, 43140 states have (on average 1.4353963838664812) internal successors, (61923), 43140 states have internal predecessors, (61923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43141 states to 43141 states and 61923 transitions. [2021-11-06 15:42:56,132 INFO L78 Accepts]: Start accepts. Automaton has 43141 states and 61923 transitions. Word has length 255 [2021-11-06 15:42:56,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:42:56,133 INFO L470 AbstractCegarLoop]: Abstraction has 43141 states and 61923 transitions. [2021-11-06 15:42:56,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:42:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 43141 states and 61923 transitions. [2021-11-06 15:42:56,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-06 15:42:56,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:42:56,175 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:42:56,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 15:42:56,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:42:56,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:42:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:42:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1076893214, now seen corresponding path program 1 times [2021-11-06 15:42:56,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:42:56,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266516492] [2021-11-06 15:42:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:42:56,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:42:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:42:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:42:56,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:42:56,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266516492] [2021-11-06 15:42:56,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266516492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:42:56,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:42:56,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:42:56,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533791169] [2021-11-06 15:42:56,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:42:56,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:42:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:42:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:42:56,818 INFO L87 Difference]: Start difference. First operand 43141 states and 61923 transitions. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:04,569 INFO L93 Difference]: Finished difference Result 295057 states and 424287 transitions. [2021-11-06 15:43:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:43:04,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 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 255 [2021-11-06 15:43:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:05,289 INFO L225 Difference]: With dead ends: 295057 [2021-11-06 15:43:05,290 INFO L226 Difference]: Without dead ends: 252017 [2021-11-06 15:43:05,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:43:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252017 states. [2021-11-06 15:43:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252017 to 43201. [2021-11-06 15:43:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43201 states, 43200 states have (on average 1.4350694444444445) internal successors, (61995), 43200 states have internal predecessors, (61995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43201 states to 43201 states and 61995 transitions. [2021-11-06 15:43:08,989 INFO L78 Accepts]: Start accepts. Automaton has 43201 states and 61995 transitions. Word has length 255 [2021-11-06 15:43:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:08,989 INFO L470 AbstractCegarLoop]: Abstraction has 43201 states and 61995 transitions. [2021-11-06 15:43:08,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 43201 states and 61995 transitions. [2021-11-06 15:43:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-06 15:43:09,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:09,021 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:43:09,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:43:09,021 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash -294914084, now seen corresponding path program 1 times [2021-11-06 15:43:09,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:09,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302840500] [2021-11-06 15:43:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:09,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:43:09,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:09,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302840500] [2021-11-06 15:43:09,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302840500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:09,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:09,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:43:09,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221373501] [2021-11-06 15:43:09,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:43:09,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:43:09,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:43:09,546 INFO L87 Difference]: Start difference. First operand 43201 states and 61995 transitions. Second operand has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:15,429 INFO L93 Difference]: Finished difference Result 169729 states and 243987 transitions. [2021-11-06 15:43:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:43:15,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 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 255 [2021-11-06 15:43:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:15,717 INFO L225 Difference]: With dead ends: 169729 [2021-11-06 15:43:15,718 INFO L226 Difference]: Without dead ends: 126629 [2021-11-06 15:43:15,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:43:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126629 states. [2021-11-06 15:43:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126629 to 43237. [2021-11-06 15:43:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43237 states, 43236 states have (on average 1.434707188454066) internal successors, (62031), 43236 states have internal predecessors, (62031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43237 states to 43237 states and 62031 transitions. [2021-11-06 15:43:19,106 INFO L78 Accepts]: Start accepts. Automaton has 43237 states and 62031 transitions. Word has length 255 [2021-11-06 15:43:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:19,107 INFO L470 AbstractCegarLoop]: Abstraction has 43237 states and 62031 transitions. [2021-11-06 15:43:19,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 43237 states and 62031 transitions. [2021-11-06 15:43:19,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-06 15:43:19,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:19,146 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:43:19,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:43:19,149 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -675431404, now seen corresponding path program 1 times [2021-11-06 15:43:19,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:19,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411805592] [2021-11-06 15:43:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:19,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:43:19,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:19,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411805592] [2021-11-06 15:43:19,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411805592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:19,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:19,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:43:19,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654349582] [2021-11-06 15:43:19,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:19,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:19,478 INFO L87 Difference]: Start difference. First operand 43237 states and 62031 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)