./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.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 c454dc64a3cc485840c6830ce9e1c132fc674b92d2da550d28087d832958d75f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:30:46,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:30:46,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:30:47,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:30:47,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:30:47,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:30:47,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:30:47,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:30:47,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:30:47,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:30:47,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:30:47,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:30:47,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:30:47,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:30:47,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:30:47,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:30:47,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:30:47,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:30:47,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:30:47,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:30:47,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:30:47,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:30:47,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:30:47,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:30:47,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:30:47,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:30:47,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:30:47,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:30:47,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:30:47,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:30:47,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:30:47,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:30:47,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:30:47,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:30:47,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:30:47,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:30:47,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:30:47,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:30:47,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:30:47,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:30:47,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:30:47,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:30:47,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:30:47,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:30:47,069 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:30:47,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:30:47,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:30:47,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:30:47,070 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:30:47,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:30:47,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:30:47,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:30:47,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:30:47,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:30:47,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:30:47,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:30:47,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:30:47,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:30:47,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:30:47,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:30:47,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:30:47,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:30:47,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:30:47,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:30:47,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:30:47,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:30:47,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:30:47,074 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:30:47,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:30:47,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:30:47,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:30:47,074 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c454dc64a3cc485840c6830ce9e1c132fc674b92d2da550d28087d832958d75f [2021-11-06 17:30:47,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:30:47,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:30:47,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:30:47,279 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:30:47,281 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:30:47,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i [2021-11-06 17:30:47,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd942797d/e226f886ca2f47ec99854e4126475921/FLAG9697bae4f [2021-11-06 17:30:47,961 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:30:47,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i [2021-11-06 17:30:47,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd942797d/e226f886ca2f47ec99854e4126475921/FLAG9697bae4f [2021-11-06 17:30:48,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd942797d/e226f886ca2f47ec99854e4126475921 [2021-11-06 17:30:48,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:30:48,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:30:48,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:30:48,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:30:48,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:30:48,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:30:48" (1/1) ... [2021-11-06 17:30:48,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190b2809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:48, skipping insertion in model container [2021-11-06 17:30:48,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:30:48" (1/1) ... [2021-11-06 17:30:48,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:30:48,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:30:49,511 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i[301264,301277] [2021-11-06 17:30:49,538 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 17:30:49,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:30:49,573 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:30:49,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i[301264,301277] [2021-11-06 17:30:49,804 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 17:30:49,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:30:49,894 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:30:49,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49 WrapperNode [2021-11-06 17:30:49,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:30:49,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:30:49,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:30:49,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:30:49,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:49,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:50,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:30:50,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:30:50,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:30:50,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:30:50,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:50,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:30:51,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:30:51,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:30:51,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:30:51,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (1/1) ... [2021-11-06 17:30:51,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:30:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:30:51,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:30:51,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:30:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:30:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:30:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:30:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:30:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:30:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:30:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:32:22,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:32:22,631 INFO L299 CfgBuilder]: Removed 8335 assume(true) statements. [2021-11-06 17:32:22,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:32:22 BoogieIcfgContainer [2021-11-06 17:32:22,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:32:22,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:32:22,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:32:22,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:32:22,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:30:48" (1/3) ... [2021-11-06 17:32:22,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54df14e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:32:22, skipping insertion in model container [2021-11-06 17:32:22,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:49" (2/3) ... [2021-11-06 17:32:22,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54df14e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:32:22, skipping insertion in model container [2021-11-06 17:32:22,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:32:22" (3/3) ... [2021-11-06 17:32:22,642 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--ali-ircc.ko-entry_point.cil.out.i [2021-11-06 17:32:22,645 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:32:22,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 17:32:22,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:32:22,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:32:22,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 17:32:22,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 5923 states, 5912 states have (on average 1.3284844384303112) internal successors, (7854), 5922 states have internal predecessors, (7854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 17:32:22,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:22,771 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:22,771 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -502711474, now seen corresponding path program 1 times [2021-11-06 17:32:22,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:22,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701193240] [2021-11-06 17:32:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:22,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:23,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:23,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701193240] [2021-11-06 17:32:23,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701193240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:23,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:23,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:32:23,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112116438] [2021-11-06 17:32:23,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:32:23,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:32:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:32:23,464 INFO L87 Difference]: Start difference. First operand has 5923 states, 5912 states have (on average 1.3284844384303112) internal successors, (7854), 5922 states have internal predecessors, (7854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:23,598 INFO L93 Difference]: Finished difference Result 11842 states and 15703 transitions. [2021-11-06 17:32:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:32:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-06 17:32:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:23,629 INFO L225 Difference]: With dead ends: 11842 [2021-11-06 17:32:23,629 INFO L226 Difference]: Without dead ends: 5887 [2021-11-06 17:32:23,642 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:32:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5887 states. [2021-11-06 17:32:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5887 to 5887. [2021-11-06 17:32:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5887 states, 5877 states have (on average 1.3221031138335886) internal successors, (7770), 5886 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5887 states to 5887 states and 7770 transitions. [2021-11-06 17:32:23,782 INFO L78 Accepts]: Start accepts. Automaton has 5887 states and 7770 transitions. Word has length 83 [2021-11-06 17:32:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:23,782 INFO L470 AbstractCegarLoop]: Abstraction has 5887 states and 7770 transitions. [2021-11-06 17:32:23,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5887 states and 7770 transitions. [2021-11-06 17:32:23,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 17:32:23,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:23,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:23,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:32:23,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1603257414, now seen corresponding path program 1 times [2021-11-06 17:32:23,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:23,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440674008] [2021-11-06 17:32:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:23,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:24,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:24,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440674008] [2021-11-06 17:32:24,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440674008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:24,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:24,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:24,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639267619] [2021-11-06 17:32:24,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:32:24,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:32:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:32:24,265 INFO L87 Difference]: Start difference. First operand 5887 states and 7770 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:25,394 INFO L93 Difference]: Finished difference Result 21645 states and 28520 transitions. [2021-11-06 17:32:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:32:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-06 17:32:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:25,448 INFO L225 Difference]: With dead ends: 21645 [2021-11-06 17:32:25,449 INFO L226 Difference]: Without dead ends: 15786 [2021-11-06 17:32:25,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:32:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15786 states. [2021-11-06 17:32:25,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15786 to 8322. [2021-11-06 17:32:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 8312 states have (on average 1.3177333974975938) internal successors, (10953), 8321 states have internal predecessors, (10953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 10953 transitions. [2021-11-06 17:32:25,707 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 10953 transitions. Word has length 83 [2021-11-06 17:32:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:25,708 INFO L470 AbstractCegarLoop]: Abstraction has 8322 states and 10953 transitions. [2021-11-06 17:32:25,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 10953 transitions. [2021-11-06 17:32:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 17:32:25,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:25,720 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:25,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:32:25,722 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:25,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:25,723 INFO L85 PathProgramCache]: Analyzing trace with hash 14418605, now seen corresponding path program 1 times [2021-11-06 17:32:25,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:25,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323264146] [2021-11-06 17:32:25,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:25,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:26,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:26,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323264146] [2021-11-06 17:32:26,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323264146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:26,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:26,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:26,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198296217] [2021-11-06 17:32:26,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:32:26,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:26,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:32:26,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:32:26,125 INFO L87 Difference]: Start difference. First operand 8322 states and 10953 transitions. Second operand has 4 states, 4 states have (on average 21.0) 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) [2021-11-06 17:32:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:27,127 INFO L93 Difference]: Finished difference Result 33824 states and 44445 transitions. [2021-11-06 17:32:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:32:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) 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 [2021-11-06 17:32:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:27,207 INFO L225 Difference]: With dead ends: 33824 [2021-11-06 17:32:27,207 INFO L226 Difference]: Without dead ends: 25530 [2021-11-06 17:32:27,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:32:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25530 states. [2021-11-06 17:32:27,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25530 to 15744. [2021-11-06 17:32:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15744 states, 15734 states have (on average 1.3163213423160036) internal successors, (20711), 15743 states have internal predecessors, (20711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15744 states to 15744 states and 20711 transitions. [2021-11-06 17:32:27,632 INFO L78 Accepts]: Start accepts. Automaton has 15744 states and 20711 transitions. Word has length 84 [2021-11-06 17:32:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:27,633 INFO L470 AbstractCegarLoop]: Abstraction has 15744 states and 20711 transitions. [2021-11-06 17:32:27,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) 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) [2021-11-06 17:32:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15744 states and 20711 transitions. [2021-11-06 17:32:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 17:32:27,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:27,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:27,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:32:27,645 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1227623781, now seen corresponding path program 1 times [2021-11-06 17:32:27,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:27,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550984240] [2021-11-06 17:32:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:27,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:27,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:27,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550984240] [2021-11-06 17:32:27,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550984240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:27,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:27,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:27,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554280534] [2021-11-06 17:32:27,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:32:27,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:32:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:32:27,995 INFO L87 Difference]: Start difference. First operand 15744 states and 20711 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:29,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:29,414 INFO L93 Difference]: Finished difference Result 65002 states and 85343 transitions. [2021-11-06 17:32:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:32:29,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-06 17:32:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:29,540 INFO L225 Difference]: With dead ends: 65002 [2021-11-06 17:32:29,540 INFO L226 Difference]: Without dead ends: 49286 [2021-11-06 17:32:29,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:32:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49286 states. [2021-11-06 17:32:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49286 to 29745. [2021-11-06 17:32:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29745 states, 29735 states have (on average 1.3147469312258282) internal successors, (39094), 29744 states have internal predecessors, (39094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29745 states to 29745 states and 39094 transitions. [2021-11-06 17:32:30,340 INFO L78 Accepts]: Start accepts. Automaton has 29745 states and 39094 transitions. Word has length 85 [2021-11-06 17:32:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:30,341 INFO L470 AbstractCegarLoop]: Abstraction has 29745 states and 39094 transitions. [2021-11-06 17:32:30,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 29745 states and 39094 transitions. [2021-11-06 17:32:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 17:32:30,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:30,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:30,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:32:30,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 954491686, now seen corresponding path program 1 times [2021-11-06 17:32:30,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:30,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476528304] [2021-11-06 17:32:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:30,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:30,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:30,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476528304] [2021-11-06 17:32:30,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476528304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:30,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:30,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:30,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633148382] [2021-11-06 17:32:30,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:32:30,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:32:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:32:30,742 INFO L87 Difference]: Start difference. First operand 29745 states and 39094 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:32,752 INFO L93 Difference]: Finished difference Result 124825 states and 163712 transitions. [2021-11-06 17:32:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:32:32,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-06 17:32:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:32,961 INFO L225 Difference]: With dead ends: 124825 [2021-11-06 17:32:32,961 INFO L226 Difference]: Without dead ends: 95108 [2021-11-06 17:32:33,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:32:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95108 states. [2021-11-06 17:32:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95108 to 56058. [2021-11-06 17:32:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56058 states, 56048 states have (on average 1.3129460462460747) internal successors, (73588), 56057 states have internal predecessors, (73588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56058 states to 56058 states and 73588 transitions. [2021-11-06 17:32:34,934 INFO L78 Accepts]: Start accepts. Automaton has 56058 states and 73588 transitions. Word has length 86 [2021-11-06 17:32:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:34,934 INFO L470 AbstractCegarLoop]: Abstraction has 56058 states and 73588 transitions. [2021-11-06 17:32:34,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:34,935 INFO L276 IsEmpty]: Start isEmpty. Operand 56058 states and 73588 transitions. [2021-11-06 17:32:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 17:32:34,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:34,950 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:32:34,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:32:34,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash 576370686, now seen corresponding path program 1 times [2021-11-06 17:32:34,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:34,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259226337] [2021-11-06 17:32:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:34,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 17:32:35,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:35,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259226337] [2021-11-06 17:32:35,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259226337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:35,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:35,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:32:35,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385573445] [2021-11-06 17:32:35,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:32:35,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:32:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:32:35,603 INFO L87 Difference]: Start difference. First operand 56058 states and 73588 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:39,236 INFO L93 Difference]: Finished difference Result 180882 states and 237208 transitions. [2021-11-06 17:32:39,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:32:39,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 91 [2021-11-06 17:32:39,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:39,525 INFO L225 Difference]: With dead ends: 180882 [2021-11-06 17:32:39,525 INFO L226 Difference]: Without dead ends: 124852 [2021-11-06 17:32:39,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:32:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124852 states. [2021-11-06 17:32:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124852 to 56098. [2021-11-06 17:32:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56098 states, 56088 states have (on average 1.312722864070746) internal successors, (73628), 56097 states have internal predecessors, (73628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56098 states to 56098 states and 73628 transitions. [2021-11-06 17:32:41,721 INFO L78 Accepts]: Start accepts. Automaton has 56098 states and 73628 transitions. Word has length 91 [2021-11-06 17:32:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:41,721 INFO L470 AbstractCegarLoop]: Abstraction has 56098 states and 73628 transitions. [2021-11-06 17:32:41,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 56098 states and 73628 transitions. [2021-11-06 17:32:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-06 17:32:41,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:41,730 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:41,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:32:41,731 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1176619895, now seen corresponding path program 1 times [2021-11-06 17:32:41,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:41,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365704797] [2021-11-06 17:32:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:41,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:42,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:42,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365704797] [2021-11-06 17:32:42,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365704797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:42,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:42,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:32:42,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292118201] [2021-11-06 17:32:42,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:32:42,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:32:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:42,149 INFO L87 Difference]: Start difference. First operand 56098 states and 73628 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:43,727 INFO L93 Difference]: Finished difference Result 62206 states and 82244 transitions. [2021-11-06 17:32:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:32:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-06 17:32:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:43,828 INFO L225 Difference]: With dead ends: 62206 [2021-11-06 17:32:43,828 INFO L226 Difference]: Without dead ends: 62202 [2021-11-06 17:32:43,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62202 states. [2021-11-06 17:32:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62202 to 56094. [2021-11-06 17:32:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56094 states, 56086 states have (on average 1.3121634632528616) internal successors, (73594), 56093 states have internal predecessors, (73594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56094 states to 56094 states and 73594 transitions. [2021-11-06 17:32:45,403 INFO L78 Accepts]: Start accepts. Automaton has 56094 states and 73594 transitions. Word has length 106 [2021-11-06 17:32:45,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:45,403 INFO L470 AbstractCegarLoop]: Abstraction has 56094 states and 73594 transitions. [2021-11-06 17:32:45,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 56094 states and 73594 transitions. [2021-11-06 17:32:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 17:32:45,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:45,414 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:45,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:32:45,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1400467914, now seen corresponding path program 1 times [2021-11-06 17:32:45,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:45,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365245624] [2021-11-06 17:32:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:45,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:45,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:45,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365245624] [2021-11-06 17:32:45,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365245624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:45,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:45,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:45,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278268668] [2021-11-06 17:32:45,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:32:45,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:32:45,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:45,711 INFO L87 Difference]: Start difference. First operand 56094 states and 73594 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:48,142 INFO L93 Difference]: Finished difference Result 151972 states and 199571 transitions. [2021-11-06 17:32:48,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:32:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-06 17:32:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:48,315 INFO L225 Difference]: With dead ends: 151972 [2021-11-06 17:32:48,316 INFO L226 Difference]: Without dead ends: 95906 [2021-11-06 17:32:48,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95906 states. [2021-11-06 17:32:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95906 to 95266. [2021-11-06 17:32:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95266 states, 95258 states have (on average 1.3148292006970543) internal successors, (125248), 95265 states have internal predecessors, (125248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95266 states to 95266 states and 125248 transitions. [2021-11-06 17:32:51,200 INFO L78 Accepts]: Start accepts. Automaton has 95266 states and 125248 transitions. Word has length 110 [2021-11-06 17:32:51,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:51,200 INFO L470 AbstractCegarLoop]: Abstraction has 95266 states and 125248 transitions. [2021-11-06 17:32:51,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 95266 states and 125248 transitions. [2021-11-06 17:32:51,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 17:32:51,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:51,207 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:51,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:32:51,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:51,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash 941197627, now seen corresponding path program 1 times [2021-11-06 17:32:51,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:51,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987578111] [2021-11-06 17:32:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:51,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:51,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:51,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987578111] [2021-11-06 17:32:51,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987578111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:51,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:51,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:51,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164253904] [2021-11-06 17:32:51,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:32:51,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:51,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:32:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:51,477 INFO L87 Difference]: Start difference. First operand 95266 states and 125248 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:32:53,386 INFO L93 Difference]: Finished difference Result 156236 states and 205735 transitions. [2021-11-06 17:32:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:32:53,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-06 17:32:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:32:53,499 INFO L225 Difference]: With dead ends: 156236 [2021-11-06 17:32:53,500 INFO L226 Difference]: Without dead ends: 60998 [2021-11-06 17:32:53,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60998 states. [2021-11-06 17:32:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60998 to 60998. [2021-11-06 17:32:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60998 states, 60990 states have (on average 1.3196589604853255) internal successors, (80486), 60997 states have internal predecessors, (80486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60998 states to 60998 states and 80486 transitions. [2021-11-06 17:32:55,323 INFO L78 Accepts]: Start accepts. Automaton has 60998 states and 80486 transitions. Word has length 111 [2021-11-06 17:32:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:55,323 INFO L470 AbstractCegarLoop]: Abstraction has 60998 states and 80486 transitions. [2021-11-06 17:32:55,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:32:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 60998 states and 80486 transitions. [2021-11-06 17:32:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 17:32:55,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:55,326 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:32:55,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 17:32:55,326 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 17:32:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:55,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1249662915, now seen corresponding path program 1 times [2021-11-06 17:32:55,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:55,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092342029] [2021-11-06 17:32:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:55,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:32:55,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:55,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092342029] [2021-11-06 17:32:55,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092342029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:55,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:55,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:32:55,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920958211] [2021-11-06 17:32:55,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:32:55,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:32:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:32:55,591 INFO L87 Difference]: Start difference. First operand 60998 states and 80486 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)