./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.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 a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:44:32,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:44:32,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:44:32,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:44:32,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:44:32,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:44:32,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:44:32,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:44:32,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:44:32,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:44:32,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:44:32,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:44:32,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:44:32,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:44:32,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:44:32,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:44:32,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:44:32,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:44:32,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:44:32,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:44:32,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:44:32,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:44:32,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:44:32,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:44:32,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:44:32,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:44:32,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:44:32,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:44:32,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:44:32,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:44:32,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:44:32,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:44:32,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:44:32,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:44:32,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:44:32,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:44:32,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:44:32,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:44:32,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:44:32,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:44:32,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:44:33,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:44:33,028 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:44:33,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:44:33,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:44:33,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:44:33,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:44:33,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:44:33,031 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:44:33,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:44:33,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:44:33,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:44:33,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:44:33,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:44:33,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:44:33,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:44:33,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:44:33,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:44:33,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:44:33,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:44:33,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:44:33,042 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:44:33,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:44:33,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:44:33,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:44:33,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa2cb2318ea112688f7105056cfdc1f55c42e8f926c44139a3fa1f7774bac [2021-11-05 16:44:33,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:44:33,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:44:33,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:44:33,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:44:33,291 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:44:33,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-05 16:44:33,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2681d3c41/c4b0526974634f1890b89587b179fd69/FLAG8e1f17780 [2021-11-05 16:44:34,026 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:44:34,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-05 16:44:34,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2681d3c41/c4b0526974634f1890b89587b179fd69/FLAG8e1f17780 [2021-11-05 16:44:34,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2681d3c41/c4b0526974634f1890b89587b179fd69 [2021-11-05 16:44:34,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:44:34,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:44:34,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:44:34,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:44:34,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:44:34,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:44:34" (1/1) ... [2021-11-05 16:44:34,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302a4636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:34, skipping insertion in model container [2021-11-05 16:44:34,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:44:34" (1/1) ... [2021-11-05 16:44:34,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:44:34,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:44:34,948 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-05 16:44:36,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:44:37,048 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:44:37,154 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i[174455,174468] [2021-11-05 16:44:37,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:44:37,660 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:44:37,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37 WrapperNode [2021-11-05 16:44:37,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:44:37,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:44:37,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:44:37,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:44:37,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:37,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:38,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:44:38,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:44:38,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:44:38,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:44:38,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:38,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:38,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:38,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:39,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:39,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:39,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:39,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:44:39,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:44:39,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:44:39,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:44:39,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (1/1) ... [2021-11-05 16:44:39,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:44:39,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:44:39,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 16:44:39,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 16:44:39,496 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_le_to_cpu [2021-11-05 16:44:39,496 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_le_to_cpu [2021-11-05 16:44:39,496 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 16:44:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure mgt_cpu_to_le [2021-11-05 16:44:39,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mgt_cpu_to_le [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:44:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:44:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:44:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:45:03,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:45:03,145 INFO L299 CfgBuilder]: Removed 5688 assume(true) statements. [2021-11-05 16:45:03,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:45:03 BoogieIcfgContainer [2021-11-05 16:45:03,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:45:03,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:45:03,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:45:03,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:45:03,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:44:34" (1/3) ... [2021-11-05 16:45:03,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228152f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:45:03, skipping insertion in model container [2021-11-05 16:45:03,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:44:37" (2/3) ... [2021-11-05 16:45:03,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228152f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:45:03, skipping insertion in model container [2021-11-05 16:45:03,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:45:03" (3/3) ... [2021-11-05 16:45:03,157 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--prism54--prism54.ko-entry_point.cil.out.i [2021-11-05 16:45:03,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:45:03,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-05 16:45:03,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:45:03,216 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 16:45:03,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-05 16:45:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 6328 states, 6304 states have (on average 1.374524111675127) internal successors, (8665), 6305 states have internal predecessors, (8665), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-05 16:45:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-05 16:45:03,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:03,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:45:03,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1442246229, now seen corresponding path program 1 times [2021-11-05 16:45:03,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:03,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158844411] [2021-11-05 16:45:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:03,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:45:04,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:04,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158844411] [2021-11-05 16:45:04,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158844411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:04,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:04,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:45:04,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882193377] [2021-11-05 16:45:04,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:04,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:45:04,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:45:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:04,080 INFO L87 Difference]: Start difference. First operand has 6328 states, 6304 states have (on average 1.374524111675127) internal successors, (8665), 6305 states have internal predecessors, (8665), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:06,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:45:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:06,723 INFO L93 Difference]: Finished difference Result 18948 states and 26071 transitions. [2021-11-05 16:45:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:45:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-05 16:45:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:06,777 INFO L225 Difference]: With dead ends: 18948 [2021-11-05 16:45:06,778 INFO L226 Difference]: Without dead ends: 11705 [2021-11-05 16:45:06,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:06,800 INFO L933 BasicCegarLoop]: 8604 mSDtfsCounter, 8547 mSDsluCounter, 8572 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2172.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8547 SdHoareTripleChecker+Valid, 17176 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2301.09ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:06,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8547 Valid, 17176 Invalid, 15 Unknown, 0 Unchecked, 30.66ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2301.09ms Time] [2021-11-05 16:45:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11705 states. [2021-11-05 16:45:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11705 to 11705. [2021-11-05 16:45:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11705 states, 11660 states have (on average 1.3115780445969125) internal successors, (15293), 11660 states have internal predecessors, (15293), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-05 16:45:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11705 states to 11705 states and 15373 transitions. [2021-11-05 16:45:07,092 INFO L78 Accepts]: Start accepts. Automaton has 11705 states and 15373 transitions. Word has length 20 [2021-11-05 16:45:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:07,093 INFO L470 AbstractCegarLoop]: Abstraction has 11705 states and 15373 transitions. [2021-11-05 16:45:07,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 11705 states and 15373 transitions. [2021-11-05 16:45:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 16:45:07,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:07,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:45:07,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:45:07,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1119078949, now seen corresponding path program 1 times [2021-11-05 16:45:07,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:07,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937234021] [2021-11-05 16:45:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:07,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:45:07,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:07,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937234021] [2021-11-05 16:45:07,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937234021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:07,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:07,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:45:07,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853864859] [2021-11-05 16:45:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:07,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:45:07,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:45:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:45:07,548 INFO L87 Difference]: Start difference. First operand 11705 states and 15373 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:08,373 INFO L93 Difference]: Finished difference Result 35093 states and 46094 transitions. [2021-11-05 16:45:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:45:08,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-05 16:45:08,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:08,443 INFO L225 Difference]: With dead ends: 35093 [2021-11-05 16:45:08,443 INFO L226 Difference]: Without dead ends: 23393 [2021-11-05 16:45:08,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.20ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:45:08,468 INFO L933 BasicCegarLoop]: 7659 mSDtfsCounter, 7662 mSDsluCounter, 22933 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7662 SdHoareTripleChecker+Valid, 30592 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.85ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 396.06ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:08,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7662 Valid, 30592 Invalid, 293 Unknown, 0 Unchecked, 35.85ms Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 396.06ms Time] [2021-11-05 16:45:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23393 states. [2021-11-05 16:45:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23393 to 23313. [2021-11-05 16:45:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23313 states, 23224 states have (on average 1.3112728212194282) internal successors, (30453), 23224 states have internal predecessors, (30453), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-05 16:45:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23313 states to 23313 states and 30613 transitions. [2021-11-05 16:45:08,947 INFO L78 Accepts]: Start accepts. Automaton has 23313 states and 30613 transitions. Word has length 24 [2021-11-05 16:45:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:08,947 INFO L470 AbstractCegarLoop]: Abstraction has 23313 states and 30613 transitions. [2021-11-05 16:45:08,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 23313 states and 30613 transitions. [2021-11-05 16:45:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 16:45:08,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:08,962 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:45:08,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:45:08,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1273665167, now seen corresponding path program 1 times [2021-11-05 16:45:08,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:08,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326664117] [2021-11-05 16:45:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:08,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:45:09,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:09,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326664117] [2021-11-05 16:45:09,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326664117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:09,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:09,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:45:09,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016008275] [2021-11-05 16:45:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:09,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:45:09,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:45:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:09,314 INFO L87 Difference]: Start difference. First operand 23313 states and 30613 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:10,245 INFO L93 Difference]: Finished difference Result 61991 states and 81275 transitions. [2021-11-05 16:45:10,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:45:10,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-05 16:45:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:10,327 INFO L225 Difference]: With dead ends: 61991 [2021-11-05 16:45:10,328 INFO L226 Difference]: Without dead ends: 38688 [2021-11-05 16:45:10,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:10,373 INFO L933 BasicCegarLoop]: 7755 mSDtfsCounter, 5509 mSDsluCounter, 7166 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5509 SdHoareTripleChecker+Valid, 14921 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.86ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 222.77ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:10,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5509 Valid, 14921 Invalid, 64 Unknown, 0 Unchecked, 20.86ms Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 222.77ms Time] [2021-11-05 16:45:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38688 states. [2021-11-05 16:45:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38688 to 37957. [2021-11-05 16:45:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37957 states, 37812 states have (on average 1.3079974611234528) internal successors, (49458), 37816 states have internal predecessors, (49458), 132 states have call successors, (132), 12 states have call predecessors, (132), 12 states have return successors, (132), 128 states have call predecessors, (132), 132 states have call successors, (132) [2021-11-05 16:45:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37957 states to 37957 states and 49722 transitions. [2021-11-05 16:45:11,052 INFO L78 Accepts]: Start accepts. Automaton has 37957 states and 49722 transitions. Word has length 65 [2021-11-05 16:45:11,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:11,052 INFO L470 AbstractCegarLoop]: Abstraction has 37957 states and 49722 transitions. [2021-11-05 16:45:11,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 37957 states and 49722 transitions. [2021-11-05 16:45:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 16:45:11,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:11,064 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:45:11,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:45:11,064 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash -321258289, now seen corresponding path program 1 times [2021-11-05 16:45:11,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:11,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111507045] [2021-11-05 16:45:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:11,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 16:45:11,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:11,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111507045] [2021-11-05 16:45:11,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111507045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:11,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:11,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:45:11,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787210740] [2021-11-05 16:45:11,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:11,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:45:11,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:11,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:45:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:11,379 INFO L87 Difference]: Start difference. First operand 37957 states and 49722 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:12,608 INFO L93 Difference]: Finished difference Result 101519 states and 132890 transitions. [2021-11-05 16:45:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:45:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 16:45:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:12,766 INFO L225 Difference]: With dead ends: 101519 [2021-11-05 16:45:12,766 INFO L226 Difference]: Without dead ends: 63572 [2021-11-05 16:45:12,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:12,831 INFO L933 BasicCegarLoop]: 9799 mSDtfsCounter, 5252 mSDsluCounter, 7673 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5252 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:12,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5252 Valid, 17472 Invalid, 20 Unknown, 0 Unchecked, 15.75ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 164.17ms Time] [2021-11-05 16:45:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63572 states. [2021-11-05 16:45:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63572 to 63565. [2021-11-05 16:45:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63565 states, 63380 states have (on average 1.3070053644682866) internal successors, (82838), 63384 states have internal predecessors, (82838), 164 states have call successors, (164), 20 states have call predecessors, (164), 20 states have return successors, (164), 160 states have call predecessors, (164), 164 states have call successors, (164) [2021-11-05 16:45:14,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63565 states to 63565 states and 83166 transitions. [2021-11-05 16:45:14,416 INFO L78 Accepts]: Start accepts. Automaton has 63565 states and 83166 transitions. Word has length 84 [2021-11-05 16:45:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:14,417 INFO L470 AbstractCegarLoop]: Abstraction has 63565 states and 83166 transitions. [2021-11-05 16:45:14,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:14,418 INFO L276 IsEmpty]: Start isEmpty. Operand 63565 states and 83166 transitions. [2021-11-05 16:45:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 16:45:14,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:14,435 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:45:14,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:45:14,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1211709067, now seen corresponding path program 1 times [2021-11-05 16:45:14,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:14,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079605014] [2021-11-05 16:45:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:14,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 16:45:14,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:14,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079605014] [2021-11-05 16:45:14,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079605014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:14,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:14,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:45:14,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754358181] [2021-11-05 16:45:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:14,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:45:14,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:45:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:14,953 INFO L87 Difference]: Start difference. First operand 63565 states and 83166 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:17,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:45:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:18,417 INFO L93 Difference]: Finished difference Result 152823 states and 199938 transitions. [2021-11-05 16:45:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:45:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-05 16:45:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:18,607 INFO L225 Difference]: With dead ends: 152823 [2021-11-05 16:45:18,608 INFO L226 Difference]: Without dead ends: 89268 [2021-11-05 16:45:18,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:18,791 INFO L933 BasicCegarLoop]: 12935 mSDtfsCounter, 6162 mSDsluCounter, 6770 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2176.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6162 SdHoareTripleChecker+Valid, 19705 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.83ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2319.05ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:18,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6162 Valid, 19705 Invalid, 30 Unknown, 0 Unchecked, 13.83ms Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2319.05ms Time] [2021-11-05 16:45:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89268 states. [2021-11-05 16:45:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89268 to 89261. [2021-11-05 16:45:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89261 states, 89036 states have (on average 1.3066400107821556) internal successors, (116338), 89040 states have internal predecessors, (116338), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-05 16:45:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89261 states to 89261 states and 116730 transitions. [2021-11-05 16:45:20,441 INFO L78 Accepts]: Start accepts. Automaton has 89261 states and 116730 transitions. Word has length 96 [2021-11-05 16:45:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:20,441 INFO L470 AbstractCegarLoop]: Abstraction has 89261 states and 116730 transitions. [2021-11-05 16:45:20,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 89261 states and 116730 transitions. [2021-11-05 16:45:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-05 16:45:20,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:20,470 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-05 16:45:20,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:45:20,471 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2134919312, now seen corresponding path program 1 times [2021-11-05 16:45:20,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:20,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310459083] [2021-11-05 16:45:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:20,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:45:21,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:21,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310459083] [2021-11-05 16:45:21,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310459083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:21,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:21,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:45:21,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137625303] [2021-11-05 16:45:21,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:21,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:45:21,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:45:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:45:21,046 INFO L87 Difference]: Start difference. First operand 89261 states and 116730 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:23,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:45:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:25,190 INFO L93 Difference]: Finished difference Result 208579 states and 272802 transitions. [2021-11-05 16:45:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:45:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-05 16:45:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:25,447 INFO L225 Difference]: With dead ends: 208579 [2021-11-05 16:45:25,447 INFO L226 Difference]: Without dead ends: 119328 [2021-11-05 16:45:25,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:45:25,549 INFO L933 BasicCegarLoop]: 13870 mSDtfsCounter, 11348 mSDsluCounter, 16386 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2250.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 30256 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.21ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2387.52ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:25,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 30256 Invalid, 34 Unknown, 0 Unchecked, 22.21ms Time], IncrementalHoareTripleChecker [12 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2387.52ms Time] [2021-11-05 16:45:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119328 states. [2021-11-05 16:45:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119328 to 89277. [2021-11-05 16:45:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89277 states, 89052 states have (on average 1.306584916677896) internal successors, (116354), 89056 states have internal predecessors, (116354), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-05 16:45:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89277 states to 89277 states and 116746 transitions. [2021-11-05 16:45:27,446 INFO L78 Accepts]: Start accepts. Automaton has 89277 states and 116746 transitions. Word has length 109 [2021-11-05 16:45:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:27,448 INFO L470 AbstractCegarLoop]: Abstraction has 89277 states and 116746 transitions. [2021-11-05 16:45:27,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand 89277 states and 116746 transitions. [2021-11-05 16:45:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-05 16:45:27,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:27,481 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-05 16:45:27,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:45:27,481 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 704799202, now seen corresponding path program 1 times [2021-11-05 16:45:27,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:27,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231398356] [2021-11-05 16:45:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:27,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 16:45:28,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:28,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231398356] [2021-11-05 16:45:28,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231398356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:28,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:28,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:45:28,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512589746] [2021-11-05 16:45:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:28,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:45:28,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:45:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:45:28,024 INFO L87 Difference]: Start difference. First operand 89277 states and 116746 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:30,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:45:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:32,564 INFO L93 Difference]: Finished difference Result 208619 states and 272842 transitions. [2021-11-05 16:45:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:45:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-05 16:45:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:32,812 INFO L225 Difference]: With dead ends: 208619 [2021-11-05 16:45:32,812 INFO L226 Difference]: Without dead ends: 119352 [2021-11-05 16:45:32,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:45:32,888 INFO L933 BasicCegarLoop]: 11783 mSDtfsCounter, 11348 mSDsluCounter, 16300 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2163.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11348 SdHoareTripleChecker+Valid, 28083 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.31ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2314.28ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:32,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11348 Valid, 28083 Invalid, 33 Unknown, 0 Unchecked, 26.31ms Time], IncrementalHoareTripleChecker [13 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 2314.28ms Time] [2021-11-05 16:45:32,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119352 states. [2021-11-05 16:45:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119352 to 89277. [2021-11-05 16:45:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89277 states, 89052 states have (on average 1.306584916677896) internal successors, (116354), 89056 states have internal predecessors, (116354), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-05 16:45:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89277 states to 89277 states and 116746 transitions. [2021-11-05 16:45:34,822 INFO L78 Accepts]: Start accepts. Automaton has 89277 states and 116746 transitions. Word has length 118 [2021-11-05 16:45:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:34,823 INFO L470 AbstractCegarLoop]: Abstraction has 89277 states and 116746 transitions. [2021-11-05 16:45:34,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 89277 states and 116746 transitions. [2021-11-05 16:45:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-05 16:45:34,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:34,865 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:45:34,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:45:34,865 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:34,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:34,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1964775073, now seen corresponding path program 1 times [2021-11-05 16:45:34,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:34,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583347885] [2021-11-05 16:45:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:34,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 16:45:35,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:35,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583347885] [2021-11-05 16:45:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583347885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:35,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:35,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:45:35,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153901829] [2021-11-05 16:45:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:35,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:45:35,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:45:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:35,234 INFO L87 Difference]: Start difference. First operand 89277 states and 116746 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:37,050 INFO L93 Difference]: Finished difference Result 178544 states and 233480 transitions. [2021-11-05 16:45:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:45:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-05 16:45:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:37,214 INFO L225 Difference]: With dead ends: 178544 [2021-11-05 16:45:37,214 INFO L226 Difference]: Without dead ends: 89277 [2021-11-05 16:45:37,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:37,307 INFO L933 BasicCegarLoop]: 7700 mSDtfsCounter, 7664 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7664 SdHoareTripleChecker+Valid, 7700 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.82ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:37,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7664 Valid, 7700 Invalid, 2 Unknown, 0 Unchecked, 8.95ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 4.82ms Time] [2021-11-05 16:45:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89277 states. [2021-11-05 16:45:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89277 to 89277. [2021-11-05 16:45:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89277 states, 89052 states have (on average 1.3064950815254008) internal successors, (116346), 89056 states have internal predecessors, (116346), 196 states have call successors, (196), 28 states have call predecessors, (196), 28 states have return successors, (196), 192 states have call predecessors, (196), 196 states have call successors, (196) [2021-11-05 16:45:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89277 states to 89277 states and 116738 transitions. [2021-11-05 16:45:39,285 INFO L78 Accepts]: Start accepts. Automaton has 89277 states and 116738 transitions. Word has length 136 [2021-11-05 16:45:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:45:39,285 INFO L470 AbstractCegarLoop]: Abstraction has 89277 states and 116738 transitions. [2021-11-05 16:45:39,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 89277 states and 116738 transitions. [2021-11-05 16:45:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 16:45:39,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:45:39,310 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:45:39,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:45:39,310 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-05 16:45:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:45:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1645463131, now seen corresponding path program 1 times [2021-11-05 16:45:39,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:45:39,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359536249] [2021-11-05 16:45:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:45:39,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:45:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:45:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-05 16:45:39,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:45:39,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359536249] [2021-11-05 16:45:39,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359536249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:45:39,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:45:39,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:45:39,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776943734] [2021-11-05 16:45:39,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:45:39,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:45:39,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:45:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:45:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:39,806 INFO L87 Difference]: Start difference. First operand 89277 states and 116738 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:45:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:45:41,452 INFO L93 Difference]: Finished difference Result 178552 states and 233480 transitions. [2021-11-05 16:45:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:45:41,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-05 16:45:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:45:41,611 INFO L225 Difference]: With dead ends: 178552 [2021-11-05 16:45:41,612 INFO L226 Difference]: Without dead ends: 89285 [2021-11-05 16:45:41,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:45:41,714 INFO L933 BasicCegarLoop]: 7701 mSDtfsCounter, 0 mSDsluCounter, 7696 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15397 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.34ms IncrementalHoareTripleChecker+Time [2021-11-05 16:45:41,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15397 Invalid, 6 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 8.34ms Time] [2021-11-05 16:45:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89285 states.