./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--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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--mwifiex--mwifiex_pcie.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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 18:42:39,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:42:39,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:42:39,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:42:39,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:42:39,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:42:39,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:42:39,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:42:39,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:42:39,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:42:39,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:42:39,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:42:39,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:42:39,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:42:39,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:42:39,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:42:39,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:42:39,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:42:39,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:42:39,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:42:39,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:42:39,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:42:39,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:42:39,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:42:39,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:42:39,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:42:39,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:42:39,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:42:39,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:42:39,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:42:39,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:42:39,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:42:39,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:42:39,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:42:39,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:42:39,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:42:39,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:42:39,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:42:39,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:42:39,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:42:39,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:42:39,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:42:39,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:42:39,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:42:39,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:42:39,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:42:39,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:42:39,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:42:39,501 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:42:39,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:42:39,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:42:39,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:42:39,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:42:39,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:42:39,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:42:39,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:42:39,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:42:39,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:42:39,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:42:39,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:42:39,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:42:39,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:42:39,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:42:39,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:42:39,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:42:39,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:42:39,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:42:39,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:42:39,505 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:42:39,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:42:39,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:42:39,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-02 18:42:39,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:42:39,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:42:39,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:42:39,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:42:39,745 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:42:39,746 INFO L432 ainManager$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--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-02 18:42:39,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0795f87e4/4cb4124b93904a8db9289c046e6448b8/FLAG913eda794 [2021-11-02 18:42:40,579 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:42:40,579 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--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-02 18:42:40,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0795f87e4/4cb4124b93904a8db9289c046e6448b8/FLAG913eda794 [2021-11-02 18:42:40,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0795f87e4/4cb4124b93904a8db9289c046e6448b8 [2021-11-02 18:42:40,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:42:40,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:42:40,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:42:40,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:42:40,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:42:40,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:42:40" (1/1) ... [2021-11-02 18:42:40,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4797dd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:40, skipping insertion in model container [2021-11-02 18:42:40,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:42:40" (1/1) ... [2021-11-02 18:42:40,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:42:40,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:42:41,785 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--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-02 18:42:42,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:42:42,625 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:42:42,782 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--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-02 18:42:43,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:42:43,174 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:42:43,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43 WrapperNode [2021-11-02 18:42:43,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:42:43,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:42:43,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:42:43,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:42:43,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:43,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:43,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:42:43,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:42:43,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:42:43,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:42:43,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:43,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:42:44,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:42:44,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:42:44,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:42:44,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (1/1) ... [2021-11-02 18:42:44,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:42:44,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:42:44,805 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) [2021-11-02 18:42:44,824 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 [2021-11-02 18:42:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:42:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:42:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:42:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:42:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-02 18:42:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:42:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:42:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:42:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:42:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:42:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:42:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:42:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:42:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:42:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-02 18:42:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:42:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:43:03,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:43:03,166 INFO L299 CfgBuilder]: Removed 2776 assume(true) statements. [2021-11-02 18:43:03,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:43:03 BoogieIcfgContainer [2021-11-02 18:43:03,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:43:03,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:43:03,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:43:03,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:43:03,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:42:40" (1/3) ... [2021-11-02 18:43:03,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d8ce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:43:03, skipping insertion in model container [2021-11-02 18:43:03,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:42:43" (2/3) ... [2021-11-02 18:43:03,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d8ce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:43:03, skipping insertion in model container [2021-11-02 18:43:03,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:43:03" (3/3) ... [2021-11-02 18:43:03,180 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-02 18:43:03,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:43:03,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 18:43:03,248 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:43:03,254 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 [2021-11-02 18:43:03,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 18:43:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 3351 states, 3349 states have (on average 1.4467005076142132) internal successors, (4845), 3350 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:43:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 18:43:03,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:43:03,317 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] [2021-11-02 18:43:03,318 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:43:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:43:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1079258943, now seen corresponding path program 1 times [2021-11-02 18:43:03,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:43:03,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669881229] [2021-11-02 18:43:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:43:03,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:43:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:43:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:43:04,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:43:04,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669881229] [2021-11-02 18:43:04,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669881229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:43:04,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:43:04,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 18:43:04,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138061938] [2021-11-02 18:43:04,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 18:43:04,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:43:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 18:43:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:43:04,082 INFO L87 Difference]: Start difference. First operand has 3351 states, 3349 states have (on average 1.4467005076142132) internal successors, (4845), 3350 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-11-02 18:43:06,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:43:08,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:43:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:43:45,213 INFO L93 Difference]: Finished difference Result 13270 states and 19204 transitions. [2021-11-02 18:43:45,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 18:43:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 [2021-11-02 18:43:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:43:45,269 INFO L225 Difference]: With dead ends: 13270 [2021-11-02 18:43:45,270 INFO L226 Difference]: Without dead ends: 9758 [2021-11-02 18:43:45,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.46ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-02 18:43:45,283 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 23643 mSDsluCounter, 14357 mSDsCounter, 0 mSdLazyCounter, 19005 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36293.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23643 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 19035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.04ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 19005 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40298.68ms IncrementalHoareTripleChecker+Time [2021-11-02 18:43:45,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23643 Valid, 216 Invalid, 19035 Unknown, 0 Unchecked, 89.04ms Time], IncrementalHoareTripleChecker [28 Valid, 19005 Invalid, 2 Unknown, 0 Unchecked, 40298.68ms Time] [2021-11-02 18:43:45,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9758 states. [2021-11-02 18:43:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9758 to 9755. [2021-11-02 18:43:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9755 states, 9754 states have (on average 1.4296698790239901) internal successors, (13945), 9754 states have internal predecessors, (13945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:43:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9755 states to 9755 states and 13945 transitions. [2021-11-02 18:43:45,651 INFO L78 Accepts]: Start accepts. Automaton has 9755 states and 13945 transitions. Word has length 24 [2021-11-02 18:43:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:43:45,652 INFO L470 AbstractCegarLoop]: Abstraction has 9755 states and 13945 transitions. [2021-11-02 18:43:45,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-11-02 18:43:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9755 states and 13945 transitions. [2021-11-02 18:43:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 18:43:45,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:43:45,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:43:45,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:43:45,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:43:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:43:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1835372418, now seen corresponding path program 1 times [2021-11-02 18:43:45,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:43:45,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736802294] [2021-11-02 18:43:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:43:45,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:43:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:43:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:43:46,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:43:46,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736802294] [2021-11-02 18:43:46,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736802294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:43:46,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:43:46,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:43:46,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827287819] [2021-11-02 18:43:46,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:43:46,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:43:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:43:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:43:46,029 INFO L87 Difference]: Start difference. First operand 9755 states and 13945 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:43:48,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:43:52,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:45:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:45:11,713 INFO L93 Difference]: Finished difference Result 29227 states and 41792 transitions. [2021-11-02 18:45:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:45:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-02 18:45:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:45:11,774 INFO L225 Difference]: With dead ends: 29227 [2021-11-02 18:45:11,775 INFO L226 Difference]: Without dead ends: 19483 [2021-11-02 18:45:11,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.34ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:45:11,793 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4649 mSDsluCounter, 14043 mSDsCounter, 0 mSdLazyCounter, 18801 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78255.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 118.64ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18801 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84278.38ms IncrementalHoareTripleChecker+Time [2021-11-02 18:45:11,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4649 Valid, 0 Invalid, 18808 Unknown, 0 Unchecked, 118.64ms Time], IncrementalHoareTripleChecker [5 Valid, 18801 Invalid, 2 Unknown, 0 Unchecked, 84278.38ms Time] [2021-11-02 18:45:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19483 states. [2021-11-02 18:45:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19483 to 19483. [2021-11-02 18:45:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19483 states, 19482 states have (on average 1.4291653834308593) internal successors, (27843), 19482 states have internal predecessors, (27843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:45:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19483 states to 19483 states and 27843 transitions. [2021-11-02 18:45:12,291 INFO L78 Accepts]: Start accepts. Automaton has 19483 states and 27843 transitions. Word has length 31 [2021-11-02 18:45:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:45:12,292 INFO L470 AbstractCegarLoop]: Abstraction has 19483 states and 27843 transitions. [2021-11-02 18:45:12,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:45:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 19483 states and 27843 transitions. [2021-11-02 18:45:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 18:45:12,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:45:12,312 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] [2021-11-02 18:45:12,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:45:12,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:45:12,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:45:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1277242410, now seen corresponding path program 1 times [2021-11-02 18:45:12,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:45:12,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099056390] [2021-11-02 18:45:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:45:12,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:45:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:45:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:45:12,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:45:12,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099056390] [2021-11-02 18:45:12,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099056390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:45:12,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:45:12,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:45:12,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002760255] [2021-11-02 18:45:12,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:45:12,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:45:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:45:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:45:12,639 INFO L87 Difference]: Start difference. First operand 19483 states and 27843 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:45:14,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:45:17,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:45:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:45:59,377 INFO L93 Difference]: Finished difference Result 35651 states and 51162 transitions. [2021-11-02 18:45:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:45:59,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-02 18:45:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:45:59,416 INFO L225 Difference]: With dead ends: 35651 [2021-11-02 18:45:59,416 INFO L226 Difference]: Without dead ends: 16186 [2021-11-02 18:45:59,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:45:59,445 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 950 mSDsluCounter, 4648 mSDsCounter, 0 mSdLazyCounter, 9404 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42338.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9404 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46044.86ms IncrementalHoareTripleChecker+Time [2021-11-02 18:45:59,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 0 Invalid, 9407 Unknown, 0 Unchecked, 47.41ms Time], IncrementalHoareTripleChecker [1 Valid, 9404 Invalid, 2 Unknown, 0 Unchecked, 46044.86ms Time] [2021-11-02 18:45:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16186 states. [2021-11-02 18:45:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16186 to 15541. [2021-11-02 18:45:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15541 states, 15540 states have (on average 1.4398326898326899) internal successors, (22375), 15540 states have internal predecessors, (22375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:45:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15541 states to 15541 states and 22375 transitions. [2021-11-02 18:45:59,933 INFO L78 Accepts]: Start accepts. Automaton has 15541 states and 22375 transitions. Word has length 72 [2021-11-02 18:45:59,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:45:59,934 INFO L470 AbstractCegarLoop]: Abstraction has 15541 states and 22375 transitions. [2021-11-02 18:45:59,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:45:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 15541 states and 22375 transitions. [2021-11-02 18:45:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 18:45:59,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:45:59,948 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] [2021-11-02 18:45:59,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:45:59,949 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:45:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:45:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1493878614, now seen corresponding path program 1 times [2021-11-02 18:45:59,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:45:59,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304307757] [2021-11-02 18:45:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:45:59,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:46:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:46:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:46:00,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:46:00,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304307757] [2021-11-02 18:46:00,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304307757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:46:00,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:46:00,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:46:00,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564141183] [2021-11-02 18:46:00,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:46:00,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:46:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:46:00,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:46:00,262 INFO L87 Difference]: Start difference. First operand 15541 states and 22375 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:46:02,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:06,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:46:38,831 INFO L93 Difference]: Finished difference Result 30442 states and 43796 transitions. [2021-11-02 18:46:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:46:38,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2021-11-02 18:46:38,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:46:38,864 INFO L225 Difference]: With dead ends: 30442 [2021-11-02 18:46:38,864 INFO L226 Difference]: Without dead ends: 15549 [2021-11-02 18:46:38,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:46:38,892 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4664 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 6619 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34485.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6619 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37911.62ms IncrementalHoareTripleChecker+Time [2021-11-02 18:46:38,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4664 Valid, 0 Invalid, 6621 Unknown, 0 Unchecked, 37.35ms Time], IncrementalHoareTripleChecker [0 Valid, 6619 Invalid, 2 Unknown, 0 Unchecked, 37911.62ms Time] [2021-11-02 18:46:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2021-11-02 18:46:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 15541. [2021-11-02 18:46:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15541 states, 15540 states have (on average 1.4397039897039896) internal successors, (22373), 15540 states have internal predecessors, (22373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:46:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15541 states to 15541 states and 22373 transitions. [2021-11-02 18:46:39,209 INFO L78 Accepts]: Start accepts. Automaton has 15541 states and 22373 transitions. Word has length 84 [2021-11-02 18:46:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:46:39,210 INFO L470 AbstractCegarLoop]: Abstraction has 15541 states and 22373 transitions. [2021-11-02 18:46:39,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:46:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 15541 states and 22373 transitions. [2021-11-02 18:46:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 18:46:39,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:46:39,223 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] [2021-11-02 18:46:39,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:46:39,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:46:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:46:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2090471931, now seen corresponding path program 1 times [2021-11-02 18:46:39,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:46:39,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780705902] [2021-11-02 18:46:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:46:39,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:46:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:46:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:46:39,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:46:39,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780705902] [2021-11-02 18:46:39,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780705902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:46:39,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:46:39,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:46:39,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252735688] [2021-11-02 18:46:39,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:46:39,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:46:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:46:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:46:39,889 INFO L87 Difference]: Start difference. First operand 15541 states and 22373 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:46:41,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:46:46,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:48:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:48:45,427 INFO L93 Difference]: Finished difference Result 72499 states and 104493 transitions. [2021-11-02 18:48:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:48:45,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 94 [2021-11-02 18:48:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:48:45,552 INFO L225 Difference]: With dead ends: 72499 [2021-11-02 18:48:45,552 INFO L226 Difference]: Without dead ends: 57606 [2021-11-02 18:48:45,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:48:45,606 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13661 mSDsluCounter, 13042 mSDsCounter, 0 mSdLazyCounter, 21540 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110529.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13661 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 176.08ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 21540 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123309.61ms IncrementalHoareTripleChecker+Time [2021-11-02 18:48:45,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13661 Valid, 0 Invalid, 21566 Unknown, 0 Unchecked, 176.08ms Time], IncrementalHoareTripleChecker [24 Valid, 21540 Invalid, 2 Unknown, 0 Unchecked, 123309.61ms Time] [2021-11-02 18:48:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57606 states. [2021-11-02 18:48:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57606 to 15581. [2021-11-02 18:48:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15581 states, 15580 states have (on average 1.4385750962772785) internal successors, (22413), 15580 states have internal predecessors, (22413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:48:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15581 states to 15581 states and 22413 transitions. [2021-11-02 18:48:46,376 INFO L78 Accepts]: Start accepts. Automaton has 15581 states and 22413 transitions. Word has length 94 [2021-11-02 18:48:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:48:46,379 INFO L470 AbstractCegarLoop]: Abstraction has 15581 states and 22413 transitions. [2021-11-02 18:48:46,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:48:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 15581 states and 22413 transitions. [2021-11-02 18:48:46,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 18:48:46,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:48:46,398 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] [2021-11-02 18:48:46,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:48:46,399 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:48:46,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:48:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash -280214740, now seen corresponding path program 1 times [2021-11-02 18:48:46,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:48:46,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215989225] [2021-11-02 18:48:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:48:46,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:48:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:48:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:48:47,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:48:47,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215989225] [2021-11-02 18:48:47,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215989225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:48:47,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:48:47,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:48:47,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385257659] [2021-11-02 18:48:47,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:48:47,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:48:47,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:48:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:48:47,324 INFO L87 Difference]: Start difference. First operand 15581 states and 22413 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:48:49,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:48:54,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:51:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:51:28,928 INFO L93 Difference]: Finished difference Result 71493 states and 102686 transitions. [2021-11-02 18:51:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:51:28,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-02 18:51:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:51:29,011 INFO L225 Difference]: With dead ends: 71493 [2021-11-02 18:51:29,011 INFO L226 Difference]: Without dead ends: 55930 [2021-11-02 18:51:29,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:51:29,036 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12518 mSDsluCounter, 15641 mSDsCounter, 0 mSdLazyCounter, 27263 mSolverCounterSat, 93 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140937.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12518 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 204.44ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 27263 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158823.44ms IncrementalHoareTripleChecker+Time [2021-11-02 18:51:29,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12518 Valid, 0 Invalid, 27358 Unknown, 0 Unchecked, 204.44ms Time], IncrementalHoareTripleChecker [93 Valid, 27263 Invalid, 2 Unknown, 0 Unchecked, 158823.44ms Time] [2021-11-02 18:51:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55930 states. [2021-11-02 18:51:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55930 to 15653. [2021-11-02 18:51:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15653 states, 15652 states have (on average 1.4365576284180934) internal successors, (22485), 15652 states have internal predecessors, (22485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:51:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15653 states to 15653 states and 22485 transitions. [2021-11-02 18:51:29,809 INFO L78 Accepts]: Start accepts. Automaton has 15653 states and 22485 transitions. Word has length 97 [2021-11-02 18:51:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:51:29,809 INFO L470 AbstractCegarLoop]: Abstraction has 15653 states and 22485 transitions. [2021-11-02 18:51:29,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:51:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 15653 states and 22485 transitions. [2021-11-02 18:51:29,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 18:51:29,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:51:29,824 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] [2021-11-02 18:51:29,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:51:29,825 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:51:29,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:51:29,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1210352489, now seen corresponding path program 1 times [2021-11-02 18:51:29,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:51:29,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219392630] [2021-11-02 18:51:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:51:29,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:51:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:51:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:51:30,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:51:30,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219392630] [2021-11-02 18:51:30,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219392630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:51:30,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:51:30,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:51:30,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443520197] [2021-11-02 18:51:30,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:51:30,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:51:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:51:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:51:30,319 INFO L87 Difference]: Start difference. First operand 15653 states and 22485 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2021-11-02 18:51:32,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:51:37,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:54:05,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:54:05,503 INFO L93 Difference]: Finished difference Result 59694 states and 85831 transitions. [2021-11-02 18:54:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:54:05,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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 99 [2021-11-02 18:54:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:54:05,561 INFO L225 Difference]: With dead ends: 59694 [2021-11-02 18:54:05,562 INFO L226 Difference]: Without dead ends: 44059 [2021-11-02 18:54:05,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:54:05,583 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9330 mSDsluCounter, 12591 mSDsCounter, 0 mSdLazyCounter, 25697 mSolverCounterSat, 44 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134312.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9330 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 192.50ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 25697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152625.76ms IncrementalHoareTripleChecker+Time [2021-11-02 18:54:05,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9330 Valid, 0 Invalid, 25743 Unknown, 0 Unchecked, 192.50ms Time], IncrementalHoareTripleChecker [44 Valid, 25697 Invalid, 2 Unknown, 0 Unchecked, 152625.76ms Time] [2021-11-02 18:54:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44059 states. [2021-11-02 18:54:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44059 to 15653. [2021-11-02 18:54:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15653 states, 15652 states have (on average 1.434257602862254) internal successors, (22449), 15652 states have internal predecessors, (22449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:54:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15653 states to 15653 states and 22449 transitions. [2021-11-02 18:54:06,172 INFO L78 Accepts]: Start accepts. Automaton has 15653 states and 22449 transitions. Word has length 99 [2021-11-02 18:54:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:54:06,172 INFO L470 AbstractCegarLoop]: Abstraction has 15653 states and 22449 transitions. [2021-11-02 18:54:06,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 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) [2021-11-02 18:54:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 15653 states and 22449 transitions. [2021-11-02 18:54:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 18:54:06,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:54:06,185 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] [2021-11-02 18:54:06,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:54:06,185 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:54:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:54:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash -335242480, now seen corresponding path program 1 times [2021-11-02 18:54:06,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:54:06,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098512678] [2021-11-02 18:54:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:54:06,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:54:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:54:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:54:12,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:54:12,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098512678] [2021-11-02 18:54:12,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098512678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:54:12,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:54:12,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:54:12,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271021760] [2021-11-02 18:54:12,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:54:12,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:54:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:54:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:54:12,062 INFO L87 Difference]: Start difference. First operand 15653 states and 22449 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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) [2021-11-02 18:54:14,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:54:20,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:56:14,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:56:14,170 INFO L93 Difference]: Finished difference Result 30666 states and 43947 transitions. [2021-11-02 18:56:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:56:14,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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 99 [2021-11-02 18:56:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:56:14,193 INFO L225 Difference]: With dead ends: 30666 [2021-11-02 18:56:14,194 INFO L226 Difference]: Without dead ends: 15666 [2021-11-02 18:56:14,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 302.73ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:56:14,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 14068 mSDsCounter, 0 mSdLazyCounter, 18774 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107513.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 131.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120749.16ms IncrementalHoareTripleChecker+Time [2021-11-02 18:56:14,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 18777 Unknown, 0 Unchecked, 131.61ms Time], IncrementalHoareTripleChecker [1 Valid, 18774 Invalid, 2 Unknown, 0 Unchecked, 120749.16ms Time] [2021-11-02 18:56:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15666 states. [2021-11-02 18:56:14,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15666 to 15656. [2021-11-02 18:56:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15656 states, 15655 states have (on average 1.434110507824976) internal successors, (22451), 15655 states have internal predecessors, (22451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15656 states to 15656 states and 22451 transitions. [2021-11-02 18:56:14,671 INFO L78 Accepts]: Start accepts. Automaton has 15656 states and 22451 transitions. Word has length 99 [2021-11-02 18:56:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:56:14,671 INFO L470 AbstractCegarLoop]: Abstraction has 15656 states and 22451 transitions. [2021-11-02 18:56:14,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 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) [2021-11-02 18:56:14,672 INFO L276 IsEmpty]: Start isEmpty. Operand 15656 states and 22451 transitions. [2021-11-02 18:56:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-02 18:56:14,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:56:14,680 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] [2021-11-02 18:56:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:56:14,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:56:14,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:56:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash 433381483, now seen corresponding path program 1 times [2021-11-02 18:56:14,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:56:14,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497374194] [2021-11-02 18:56:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:56:14,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:56:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:56:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:56:24,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:56:24,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497374194] [2021-11-02 18:56:24,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497374194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:56:24,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:56:24,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 18:56:24,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091484486] [2021-11-02 18:56:24,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 18:56:24,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:56:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 18:56:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-02 18:56:24,186 INFO L87 Difference]: Start difference. First operand 15656 states and 22451 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 18:56:26,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15