./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--wan--hdlc_fr.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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--wan--hdlc_fr.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 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:16:19,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:16:19,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:16:19,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:16:19,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:16:19,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:16:19,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:16:19,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:16:19,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:16:19,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:16:19,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:16:19,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:16:19,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:16:19,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:16:19,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:16:19,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:16:19,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:16:19,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:16:19,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:16:19,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:16:19,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:16:19,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:16:19,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:16:19,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:16:19,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:16:19,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:16:19,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:16:19,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:16:19,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:16:19,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:16:19,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:16:19,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:16:19,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:16:19,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:16:19,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:16:19,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:16:19,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:16:19,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:16:19,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:16:19,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:16:19,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:16:19,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:16:19,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:16:19,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:16:19,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:16:19,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:16:19,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:16:19,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:16:19,206 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:16:19,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:16:19,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:16:19,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:16:19,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:16:19,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:16:19,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:16:19,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:16:19,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:16:19,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:16:19,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:16:19,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:16:19,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:16:19,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:16:19,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:16:19,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:16:19,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:16:19,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:16:19,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:16:19,210 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:16:19,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:16:19,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:16:19,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:16:19,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3de547936c1646f60b80d97a1625774e2d4a48db257d02bb1b2f3a0d43e91e [2021-11-04 04:16:19,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:16:19,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:16:19,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:16:19,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:16:19,455 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:16:19,456 INFO L432 ainManager$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--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-04 04:16:19,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c453672d/d12157bb35b14d37adc3607bb926aae3/FLAG6857fb042 [2021-11-04 04:16:20,127 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:16:20,128 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--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-04 04:16:20,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c453672d/d12157bb35b14d37adc3607bb926aae3/FLAG6857fb042 [2021-11-04 04:16:20,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c453672d/d12157bb35b14d37adc3607bb926aae3 [2021-11-04 04:16:20,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:16:20,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:16:20,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:16:20,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:16:20,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:16:20,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:16:20" (1/1) ... [2021-11-04 04:16:20,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50161863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:20, skipping insertion in model container [2021-11-04 04:16:20,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:16:20" (1/1) ... [2021-11-04 04:16:20,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:16:20,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:16:21,090 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--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-04 04:16:21,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:16:21,481 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:16:21,572 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--wan--hdlc_fr.ko-entry_point.cil.out.i[154748,154761] [2021-11-04 04:16:21,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:16:21,807 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:16:21,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21 WrapperNode [2021-11-04 04:16:21,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:16:21,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:16:21,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:16:21,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:16:21,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:21,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:16:22,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:16:22,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:16:22,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:16:22,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:22,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:23,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:16:23,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:16:23,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:16:23,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:16:23,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (1/1) ... [2021-11-04 04:16:23,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:16:23,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:16:23,153 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) [2021-11-04 04:16:23,155 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 [2021-11-04 04:16:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:16:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:16:23,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:16:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:16:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:16:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:16:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:16:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:16:23,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:16:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:16:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:16:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:16:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:16:23,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:16:23,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:16:25,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:16:25,846 INFO L299 CfgBuilder]: Removed 3847 assume(true) statements. [2021-11-04 04:16:25,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:16:25 BoogieIcfgContainer [2021-11-04 04:16:25,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:16:25,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:16:25,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:16:25,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:16:25,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:16:20" (1/3) ... [2021-11-04 04:16:25,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b47cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:16:25, skipping insertion in model container [2021-11-04 04:16:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:16:21" (2/3) ... [2021-11-04 04:16:25,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b47cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:16:25, skipping insertion in model container [2021-11-04 04:16:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:16:25" (3/3) ... [2021-11-04 04:16:25,858 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_fr.ko-entry_point.cil.out.i [2021-11-04 04:16:25,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:16:25,862 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 04:16:25,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:16:25,909 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 [2021-11-04 04:16:25,909 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 04:16:25,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 4667 states, 4665 states have (on average 1.4655948553054663) internal successors, (6837), 4666 states have internal predecessors, (6837), 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) [2021-11-04 04:16:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-04 04:16:25,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:16:25,979 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] [2021-11-04 04:16:25,980 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:16:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:16:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1642635718, now seen corresponding path program 1 times [2021-11-04 04:16:25,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:16:25,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845442056] [2021-11-04 04:16:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:16:25,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:16:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:16:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:16:26,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:16:26,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845442056] [2021-11-04 04:16:26,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845442056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:16:26,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:16:26,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:16:26,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632966758] [2021-11-04 04:16:26,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:16:26,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:16:26,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:16:26,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:16:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:16:26,345 INFO L87 Difference]: Start difference. First operand has 4667 states, 4665 states have (on average 1.4655948553054663) internal successors, (6837), 4666 states have internal predecessors, (6837), 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 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-04 04:16:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:16:40,800 INFO L93 Difference]: Finished difference Result 13949 states and 20444 transitions. [2021-11-04 04:16:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:16:40,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-04 04:16:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:16:40,862 INFO L225 Difference]: With dead ends: 13949 [2021-11-04 04:16:40,862 INFO L226 Difference]: Without dead ends: 9275 [2021-11-04 04:16:40,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:16:40,885 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 6502 mSDsluCounter, 6547 mSDsCounter, 0 mSdLazyCounter, 13109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11689.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6502 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13906.89ms IncrementalHoareTripleChecker+Time [2021-11-04 04:16:40,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6502 Valid, 8 Invalid, 13112 Unknown, 0 Unchecked, 32.60ms Time], IncrementalHoareTripleChecker [3 Valid, 13109 Invalid, 0 Unknown, 0 Unchecked, 13906.89ms Time] [2021-11-04 04:16:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9275 states. [2021-11-04 04:16:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9275 to 9275. [2021-11-04 04:16:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9274 states have (on average 1.4067284882467113) internal successors, (13046), 9274 states have internal predecessors, (13046), 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) [2021-11-04 04:16:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 13046 transitions. [2021-11-04 04:16:41,134 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 13046 transitions. Word has length 22 [2021-11-04 04:16:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:16:41,135 INFO L470 AbstractCegarLoop]: Abstraction has 9275 states and 13046 transitions. [2021-11-04 04:16:41,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-04 04:16:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 13046 transitions. [2021-11-04 04:16:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-04 04:16:41,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:16:41,137 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] [2021-11-04 04:16:41,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:16:41,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:16:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:16:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash -899430506, now seen corresponding path program 1 times [2021-11-04 04:16:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:16:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434559586] [2021-11-04 04:16:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:16:41,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:16:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:16:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:16:41,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:16:41,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434559586] [2021-11-04 04:16:41,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434559586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:16:41,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:16:41,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:16:41,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021511545] [2021-11-04 04:16:41,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:16:41,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:16:41,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:16:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:16:41,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:16:41,358 INFO L87 Difference]: Start difference. First operand 9275 states and 13046 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-04 04:17:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:17:01,491 INFO L93 Difference]: Finished difference Result 18526 states and 26063 transitions. [2021-11-04 04:17:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:17:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2021-11-04 04:17:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:17:01,522 INFO L225 Difference]: With dead ends: 18526 [2021-11-04 04:17:01,522 INFO L226 Difference]: Without dead ends: 9274 [2021-11-04 04:17:01,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:17:01,541 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13062 mSDsluCounter, 6521 mSDsCounter, 0 mSdLazyCounter, 19565 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16724.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19624.40ms IncrementalHoareTripleChecker+Time [2021-11-04 04:17:01,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13062 Valid, 0 Invalid, 19568 Unknown, 0 Unchecked, 46.35ms Time], IncrementalHoareTripleChecker [3 Valid, 19565 Invalid, 0 Unknown, 0 Unchecked, 19624.40ms Time] [2021-11-04 04:17:01,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9274 states. [2021-11-04 04:17:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9274 to 9274. [2021-11-04 04:17:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9274 states, 9273 states have (on average 1.4064488299363744) internal successors, (13042), 9273 states have internal predecessors, (13042), 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) [2021-11-04 04:17:01,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 13042 transitions. [2021-11-04 04:17:01,740 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 13042 transitions. Word has length 26 [2021-11-04 04:17:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:17:01,740 INFO L470 AbstractCegarLoop]: Abstraction has 9274 states and 13042 transitions. [2021-11-04 04:17:01,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2021-11-04 04:17:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 13042 transitions. [2021-11-04 04:17:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-04 04:17:01,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:17:01,750 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 04:17:01,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:17:01,750 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:17:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:17:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1619061827, now seen corresponding path program 1 times [2021-11-04 04:17:01,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:17:01,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117212766] [2021-11-04 04:17:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:17:01,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:17:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:17:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 04:17:01,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:17:01,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117212766] [2021-11-04 04:17:01,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117212766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:17:01,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:17:01,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:17:01,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132851340] [2021-11-04 04:17:01,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:17:01,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:17:01,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:17:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:17:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:17:01,878 INFO L87 Difference]: Start difference. First operand 9274 states and 13042 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-04 04:17:27,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:17:27,789 INFO L93 Difference]: Finished difference Result 27774 states and 39071 transitions. [2021-11-04 04:17:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:17:27,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 38 [2021-11-04 04:17:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:17:27,841 INFO L225 Difference]: With dead ends: 27774 [2021-11-04 04:17:27,841 INFO L226 Difference]: Without dead ends: 18519 [2021-11-04 04:17:27,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.54ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:17:27,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6482 mSDsluCounter, 19110 mSDsCounter, 0 mSdLazyCounter, 26179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21773.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6482 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.50ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25271.86ms IncrementalHoareTripleChecker+Time [2021-11-04 04:17:27,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6482 Valid, 0 Invalid, 26186 Unknown, 0 Unchecked, 42.50ms Time], IncrementalHoareTripleChecker [7 Valid, 26179 Invalid, 0 Unknown, 0 Unchecked, 25271.86ms Time] [2021-11-04 04:17:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18519 states. [2021-11-04 04:17:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18519 to 18279. [2021-11-04 04:17:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18279 states, 18278 states have (on average 1.4081956450377504) internal successors, (25739), 18278 states have internal predecessors, (25739), 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) [2021-11-04 04:17:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18279 states to 18279 states and 25739 transitions. [2021-11-04 04:17:28,351 INFO L78 Accepts]: Start accepts. Automaton has 18279 states and 25739 transitions. Word has length 38 [2021-11-04 04:17:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:17:28,352 INFO L470 AbstractCegarLoop]: Abstraction has 18279 states and 25739 transitions. [2021-11-04 04:17:28,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-04 04:17:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18279 states and 25739 transitions. [2021-11-04 04:17:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 04:17:28,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:17:28,363 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 04:17:28,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:17:28,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:17:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:17:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash -770183526, now seen corresponding path program 1 times [2021-11-04 04:17:28,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:17:28,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793141391] [2021-11-04 04:17:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:17:28,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:17:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:17:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-04 04:17:28,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:17:28,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793141391] [2021-11-04 04:17:28,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793141391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:17:28,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:17:28,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:17:28,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483043195] [2021-11-04 04:17:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:17:28,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:17:28,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:17:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:17:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:17:28,486 INFO L87 Difference]: Start difference. First operand 18279 states and 25739 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-04 04:17:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:17:46,754 INFO L93 Difference]: Finished difference Result 44717 states and 62949 transitions. [2021-11-04 04:17:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:17:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 59 [2021-11-04 04:17:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:17:46,813 INFO L225 Difference]: With dead ends: 44717 [2021-11-04 04:17:46,813 INFO L226 Difference]: Without dead ends: 26461 [2021-11-04 04:17:46,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:17:46,832 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6183 mSDsluCounter, 6487 mSDsCounter, 0 mSdLazyCounter, 13080 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14532.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17508.78ms IncrementalHoareTripleChecker+Time [2021-11-04 04:17:46,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6183 Valid, 0 Invalid, 13082 Unknown, 0 Unchecked, 20.67ms Time], IncrementalHoareTripleChecker [2 Valid, 13080 Invalid, 0 Unknown, 0 Unchecked, 17508.78ms Time] [2021-11-04 04:17:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26461 states. [2021-11-04 04:17:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26461 to 26437. [2021-11-04 04:17:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26437 states, 26436 states have (on average 1.4074746557724316) internal successors, (37208), 26436 states have internal predecessors, (37208), 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) [2021-11-04 04:17:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26437 states to 26437 states and 37208 transitions. [2021-11-04 04:17:47,328 INFO L78 Accepts]: Start accepts. Automaton has 26437 states and 37208 transitions. Word has length 59 [2021-11-04 04:17:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:17:47,329 INFO L470 AbstractCegarLoop]: Abstraction has 26437 states and 37208 transitions. [2021-11-04 04:17:47,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-04 04:17:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 26437 states and 37208 transitions. [2021-11-04 04:17:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 04:17:47,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:17:47,342 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 04:17:47,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:17:47,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:17:47,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:17:47,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1015760832, now seen corresponding path program 2 times [2021-11-04 04:17:47,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:17:47,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630186905] [2021-11-04 04:17:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:17:47,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:17:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:17:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:17:47,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:17:47,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630186905] [2021-11-04 04:17:47,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630186905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:17:47,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:17:47,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:17:47,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226727007] [2021-11-04 04:17:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:17:47,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:17:47,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:17:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:17:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:17:47,440 INFO L87 Difference]: Start difference. First operand 26437 states and 37208 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-04 04:18:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:18:08,806 INFO L93 Difference]: Finished difference Result 52913 states and 74493 transitions. [2021-11-04 04:18:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:18:08,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-04 04:18:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:18:08,910 INFO L225 Difference]: With dead ends: 52913 [2021-11-04 04:18:08,910 INFO L226 Difference]: Without dead ends: 35133 [2021-11-04 04:18:08,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:18:08,940 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6217 mSDsluCounter, 6470 mSDsCounter, 0 mSdLazyCounter, 19207 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17325.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.34ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20611.23ms IncrementalHoareTripleChecker+Time [2021-11-04 04:18:08,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6217 Valid, 0 Invalid, 19221 Unknown, 0 Unchecked, 21.34ms Time], IncrementalHoareTripleChecker [14 Valid, 19207 Invalid, 0 Unknown, 0 Unchecked, 20611.23ms Time] [2021-11-04 04:18:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35133 states. [2021-11-04 04:18:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35133 to 35109. [2021-11-04 04:18:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35109 states, 35108 states have (on average 1.4074854733963769) internal successors, (49414), 35108 states have internal predecessors, (49414), 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) [2021-11-04 04:18:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35109 states to 35109 states and 49414 transitions. [2021-11-04 04:18:09,474 INFO L78 Accepts]: Start accepts. Automaton has 35109 states and 49414 transitions. Word has length 59 [2021-11-04 04:18:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:18:09,477 INFO L470 AbstractCegarLoop]: Abstraction has 35109 states and 49414 transitions. [2021-11-04 04:18:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-04 04:18:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 35109 states and 49414 transitions. [2021-11-04 04:18:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-04 04:18:09,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:18:09,491 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:18:09,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:18:09,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:18:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:18:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash -591221986, now seen corresponding path program 1 times [2021-11-04 04:18:09,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:18:09,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675817783] [2021-11-04 04:18:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:18:09,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:18:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:18:09,590 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 04:18:09,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:18:09,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675817783] [2021-11-04 04:18:09,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675817783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:18:09,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:18:09,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:18:09,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839559218] [2021-11-04 04:18:09,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:18:09,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:18:09,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:18:09,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:18:09,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:18:09,593 INFO L87 Difference]: Start difference. First operand 35109 states and 49414 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-04 04:18:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:18:36,966 INFO L93 Difference]: Finished difference Result 70257 states and 98905 transitions. [2021-11-04 04:18:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:18:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 73 [2021-11-04 04:18:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:18:37,039 INFO L225 Difference]: With dead ends: 70257 [2021-11-04 04:18:37,039 INFO L226 Difference]: Without dead ends: 43805 [2021-11-04 04:18:37,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:18:37,067 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6264 mSDsluCounter, 6426 mSDsCounter, 0 mSdLazyCounter, 19184 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21686.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6264 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.94ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 19184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26345.88ms IncrementalHoareTripleChecker+Time [2021-11-04 04:18:37,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6264 Valid, 0 Invalid, 19201 Unknown, 0 Unchecked, 25.94ms Time], IncrementalHoareTripleChecker [17 Valid, 19184 Invalid, 0 Unknown, 0 Unchecked, 26345.88ms Time] [2021-11-04 04:18:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43805 states. [2021-11-04 04:18:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43805 to 43781. [2021-11-04 04:18:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43781 states, 43780 states have (on average 1.4074920054819553) internal successors, (61620), 43780 states have internal predecessors, (61620), 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) [2021-11-04 04:18:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43781 states to 43781 states and 61620 transitions. [2021-11-04 04:18:37,748 INFO L78 Accepts]: Start accepts. Automaton has 43781 states and 61620 transitions. Word has length 73 [2021-11-04 04:18:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:18:37,750 INFO L470 AbstractCegarLoop]: Abstraction has 43781 states and 61620 transitions. [2021-11-04 04:18:37,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-04 04:18:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 43781 states and 61620 transitions. [2021-11-04 04:18:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-04 04:18:37,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:18:37,769 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 04:18:37,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:18:37,769 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:18:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:18:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash 638916036, now seen corresponding path program 1 times [2021-11-04 04:18:37,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:18:37,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451780098] [2021-11-04 04:18:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:18:37,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:18:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:18:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-04 04:18:37,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:18:37,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451780098] [2021-11-04 04:18:37,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451780098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:18:37,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:18:37,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:18:37,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242610383] [2021-11-04 04:18:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:18:37,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:18:37,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:18:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:18:37,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:18:37,827 INFO L87 Difference]: Start difference. First operand 43781 states and 61620 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-11-04 04:19:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:19:09,433 INFO L93 Difference]: Finished difference Result 96467 states and 135773 transitions. [2021-11-04 04:19:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:19:09,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 [2021-11-04 04:19:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:19:09,550 INFO L225 Difference]: With dead ends: 96467 [2021-11-04 04:19:09,551 INFO L226 Difference]: Without dead ends: 61343 [2021-11-04 04:19:09,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:19:09,608 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12603 mSDsluCounter, 13135 mSDsCounter, 0 mSdLazyCounter, 26020 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24569.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30398.61ms IncrementalHoareTripleChecker+Time [2021-11-04 04:19:09,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12603 Valid, 0 Invalid, 26020 Unknown, 0 Unchecked, 55.20ms Time], IncrementalHoareTripleChecker [0 Valid, 26020 Invalid, 0 Unknown, 0 Unchecked, 30398.61ms Time] [2021-11-04 04:19:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61343 states. [2021-11-04 04:19:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61343 to 43785. [2021-11-04 04:19:10,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43785 states, 43784 states have (on average 1.4074547780010962) internal successors, (61624), 43784 states have internal predecessors, (61624), 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) [2021-11-04 04:19:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43785 states to 43785 states and 61624 transitions. [2021-11-04 04:19:10,453 INFO L78 Accepts]: Start accepts. Automaton has 43785 states and 61624 transitions. Word has length 86 [2021-11-04 04:19:10,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:19:10,453 INFO L470 AbstractCegarLoop]: Abstraction has 43785 states and 61624 transitions. [2021-11-04 04:19:10,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-11-04 04:19:10,453 INFO L276 IsEmpty]: Start isEmpty. Operand 43785 states and 61624 transitions. [2021-11-04 04:19:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 04:19:10,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:19:10,469 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 04:19:10,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 04:19:10,470 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:19:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:19:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash -280928408, now seen corresponding path program 1 times [2021-11-04 04:19:10,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:19:10,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544819116] [2021-11-04 04:19:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:19:10,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:19:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:19:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-04 04:19:10,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:19:10,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544819116] [2021-11-04 04:19:10,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544819116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:19:10,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:19:10,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:19:10,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265169978] [2021-11-04 04:19:10,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:19:10,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:19:10,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:19:10,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:19:10,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:19:10,551 INFO L87 Difference]: Start difference. First operand 43785 states and 61624 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-04 04:19:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:19:37,326 INFO L93 Difference]: Finished difference Result 107888 states and 151875 transitions. [2021-11-04 04:19:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:19:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 88 [2021-11-04 04:19:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:19:37,473 INFO L225 Difference]: With dead ends: 107888 [2021-11-04 04:19:37,473 INFO L226 Difference]: Without dead ends: 85728 [2021-11-04 04:19:37,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:19:37,523 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6278 mSDsluCounter, 6277 mSDsCounter, 0 mSdLazyCounter, 18978 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20683.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6278 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.37ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 18978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25245.52ms IncrementalHoareTripleChecker+Time [2021-11-04 04:19:37,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6278 Valid, 0 Invalid, 19066 Unknown, 0 Unchecked, 23.37ms Time], IncrementalHoareTripleChecker [88 Valid, 18978 Invalid, 0 Unknown, 0 Unchecked, 25245.52ms Time] [2021-11-04 04:19:37,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85728 states. [2021-11-04 04:19:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85728 to 44061. [2021-11-04 04:19:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44061 states, 44060 states have (on average 1.4049024058102588) internal successors, (61900), 44060 states have internal predecessors, (61900), 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) [2021-11-04 04:19:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44061 states to 44061 states and 61900 transitions. [2021-11-04 04:19:38,616 INFO L78 Accepts]: Start accepts. Automaton has 44061 states and 61900 transitions. Word has length 88 [2021-11-04 04:19:38,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:19:38,617 INFO L470 AbstractCegarLoop]: Abstraction has 44061 states and 61900 transitions. [2021-11-04 04:19:38,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-11-04 04:19:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 44061 states and 61900 transitions. [2021-11-04 04:19:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 04:19:38,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:19:38,633 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 04:19:38,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 04:19:38,633 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:19:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:19:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -284281593, now seen corresponding path program 1 times [2021-11-04 04:19:38,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:19:38,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833894263] [2021-11-04 04:19:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:19:38,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:19:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:19:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-04 04:19:38,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:19:38,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833894263] [2021-11-04 04:19:38,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833894263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:19:38,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:19:38,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:19:38,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340616050] [2021-11-04 04:19:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:19:38,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:19:38,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:19:38,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:19:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:19:38,711 INFO L87 Difference]: Start difference. First operand 44061 states and 61900 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-04 04:20:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:20:23,641 INFO L93 Difference]: Finished difference Result 108434 states and 152250 transitions. [2021-11-04 04:20:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:20:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 90 [2021-11-04 04:20:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:20:23,758 INFO L225 Difference]: With dead ends: 108434 [2021-11-04 04:20:23,758 INFO L226 Difference]: Without dead ends: 64396 [2021-11-04 04:20:23,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.49ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:20:23,795 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12360 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 25235 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34808.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12360 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.12ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 25235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42992.23ms IncrementalHoareTripleChecker+Time [2021-11-04 04:20:23,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12360 Valid, 0 Invalid, 25294 Unknown, 0 Unchecked, 47.12ms Time], IncrementalHoareTripleChecker [59 Valid, 25235 Invalid, 0 Unknown, 0 Unchecked, 42992.23ms Time] [2021-11-04 04:20:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64396 states. [2021-11-04 04:20:24,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64396 to 43647. [2021-11-04 04:20:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.3992576639325482) internal successors, (61072), 43646 states have internal predecessors, (61072), 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) [2021-11-04 04:20:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 61072 transitions. [2021-11-04 04:20:24,941 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 61072 transitions. Word has length 90 [2021-11-04 04:20:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:20:24,942 INFO L470 AbstractCegarLoop]: Abstraction has 43647 states and 61072 transitions. [2021-11-04 04:20:24,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-04 04:20:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 61072 transitions. [2021-11-04 04:20:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 04:20:24,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:20:24,954 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:20:24,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 04:20:24,955 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:20:24,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:20:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash 298726998, now seen corresponding path program 1 times [2021-11-04 04:20:24,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:20:24,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816270046] [2021-11-04 04:20:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:20:24,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:20:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:20:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:20:25,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:20:25,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816270046] [2021-11-04 04:20:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816270046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:20:25,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:20:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:20:25,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509616726] [2021-11-04 04:20:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:20:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:20:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:20:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:20:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:20:25,239 INFO L87 Difference]: Start difference. First operand 43647 states and 61072 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-04 04:20:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:20:56,322 INFO L93 Difference]: Finished difference Result 127145 states and 178332 transitions. [2021-11-04 04:20:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:20:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 90 [2021-11-04 04:20:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:20:56,466 INFO L225 Difference]: With dead ends: 127145 [2021-11-04 04:20:56,467 INFO L226 Difference]: Without dead ends: 83521 [2021-11-04 04:20:56,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:20:56,513 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5966 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 17529 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23107.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5966 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.92ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 17529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29229.83ms IncrementalHoareTripleChecker+Time [2021-11-04 04:20:56,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5966 Valid, 0 Invalid, 17575 Unknown, 0 Unchecked, 24.92ms Time], IncrementalHoareTripleChecker [46 Valid, 17529 Invalid, 0 Unknown, 0 Unchecked, 29229.83ms Time] [2021-11-04 04:20:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83521 states. [2021-11-04 04:20:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83521 to 53877. [2021-11-04 04:20:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53877 states, 53876 states have (on average 1.394164377459351) internal successors, (75112), 53876 states have internal predecessors, (75112), 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) [2021-11-04 04:20:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53877 states to 53877 states and 75112 transitions. [2021-11-04 04:20:58,137 INFO L78 Accepts]: Start accepts. Automaton has 53877 states and 75112 transitions. Word has length 90 [2021-11-04 04:20:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:20:58,137 INFO L470 AbstractCegarLoop]: Abstraction has 53877 states and 75112 transitions. [2021-11-04 04:20:58,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-04 04:20:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 53877 states and 75112 transitions. [2021-11-04 04:20:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-04 04:20:58,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:20:58,151 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-04 04:20:58,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 04:20:58,151 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:20:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:20:58,152 INFO L85 PathProgramCache]: Analyzing trace with hash -545278504, now seen corresponding path program 1 times [2021-11-04 04:20:58,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:20:58,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472262931] [2021-11-04 04:20:58,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:20:58,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:20:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:20:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:20:58,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:20:58,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472262931] [2021-11-04 04:20:58,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472262931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:20:58,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:20:58,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:20:58,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937770295] [2021-11-04 04:20:58,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:20:58,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:20:58,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:20:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:20:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:20:58,227 INFO L87 Difference]: Start difference. First operand 53877 states and 75112 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-04 04:22:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:22:03,130 INFO L93 Difference]: Finished difference Result 240322 states and 335555 transitions. [2021-11-04 04:22:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:22:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 90 [2021-11-04 04:22:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:22:03,470 INFO L225 Difference]: With dead ends: 240322 [2021-11-04 04:22:03,470 INFO L226 Difference]: Without dead ends: 186468 [2021-11-04 04:22:03,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:22:03,552 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19234 mSDsluCounter, 17923 mSDsCounter, 0 mSdLazyCounter, 29475 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46927.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19234 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.81ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 29475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60186.63ms IncrementalHoareTripleChecker+Time [2021-11-04 04:22:03,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19234 Valid, 0 Invalid, 29502 Unknown, 0 Unchecked, 80.81ms Time], IncrementalHoareTripleChecker [27 Valid, 29475 Invalid, 0 Unknown, 0 Unchecked, 60186.63ms Time] [2021-11-04 04:22:03,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186468 states. [2021-11-04 04:22:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186468 to 54117. [2021-11-04 04:22:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54117 states, 54116 states have (on average 1.3924162909305935) internal successors, (75352), 54116 states have internal predecessors, (75352), 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) [2021-11-04 04:22:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54117 states to 54117 states and 75352 transitions. [2021-11-04 04:22:06,150 INFO L78 Accepts]: Start accepts. Automaton has 54117 states and 75352 transitions. Word has length 90 [2021-11-04 04:22:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:22:06,150 INFO L470 AbstractCegarLoop]: Abstraction has 54117 states and 75352 transitions. [2021-11-04 04:22:06,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-04 04:22:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 54117 states and 75352 transitions. [2021-11-04 04:22:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-04 04:22:06,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:22:06,167 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:22:06,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 04:22:06,167 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:22:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:22:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash 735356708, now seen corresponding path program 1 times [2021-11-04 04:22:06,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:22:06,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661402195] [2021-11-04 04:22:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:22:06,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:22:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:22:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:22:07,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:22:07,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661402195] [2021-11-04 04:22:07,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661402195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:22:07,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:22:07,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-04 04:22:07,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806038520] [2021-11-04 04:22:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:22:07,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 04:22:07,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:22:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 04:22:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-04 04:22:07,183 INFO L87 Difference]: Start difference. First operand 54117 states and 75352 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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) [2021-11-04 04:28:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:28:24,946 INFO L93 Difference]: Finished difference Result 212749 states and 297246 transitions. [2021-11-04 04:28:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-04 04:28:24,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 93 [2021-11-04 04:28:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:28:25,269 INFO L225 Difference]: With dead ends: 212749 [2021-11-04 04:28:25,269 INFO L226 Difference]: Without dead ends: 158655 [2021-11-04 04:28:25,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1054.02ms TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-11-04 04:28:25,367 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 53019 mSDsluCounter, 93199 mSDsCounter, 0 mSdLazyCounter, 111202 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248511.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53019 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 464.85ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 111202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367870.97ms IncrementalHoareTripleChecker+Time [2021-11-04 04:28:25,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53019 Valid, 0 Invalid, 111313 Unknown, 0 Unchecked, 464.85ms Time], IncrementalHoareTripleChecker [111 Valid, 111202 Invalid, 0 Unknown, 0 Unchecked, 367870.97ms Time] [2021-11-04 04:28:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158655 states. [2021-11-04 04:28:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158655 to 54477. [2021-11-04 04:28:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54477 states, 54476 states have (on average 1.387620236434393) internal successors, (75592), 54476 states have internal predecessors, (75592), 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) [2021-11-04 04:28:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54477 states to 54477 states and 75592 transitions. [2021-11-04 04:28:28,980 INFO L78 Accepts]: Start accepts. Automaton has 54477 states and 75592 transitions. Word has length 93 [2021-11-04 04:28:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:28:28,981 INFO L470 AbstractCegarLoop]: Abstraction has 54477 states and 75592 transitions. [2021-11-04 04:28:28,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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) [2021-11-04 04:28:28,981 INFO L276 IsEmpty]: Start isEmpty. Operand 54477 states and 75592 transitions. [2021-11-04 04:28:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-04 04:28:29,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:28:29,028 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:28:29,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 04:28:29,028 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:28:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:28:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1204284911, now seen corresponding path program 1 times [2021-11-04 04:28:29,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:28:29,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483954032] [2021-11-04 04:28:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:28:29,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:28:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:28:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:28:29,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:28:29,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483954032] [2021-11-04 04:28:29,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483954032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:28:29,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:28:29,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:28:29,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588302470] [2021-11-04 04:28:29,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:28:29,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:28:29,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:28:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:28:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:28:29,202 INFO L87 Difference]: Start difference. First operand 54477 states and 75592 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-11-04 04:29:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:29:36,993 INFO L93 Difference]: Finished difference Result 148805 states and 206892 transitions. [2021-11-04 04:29:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:29:36,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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 125 [2021-11-04 04:29:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:29:37,174 INFO L225 Difference]: With dead ends: 148805 [2021-11-04 04:29:37,175 INFO L226 Difference]: Without dead ends: 94351 [2021-11-04 04:29:37,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.14ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-04 04:29:37,254 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5928 mSDsluCounter, 31108 mSDsCounter, 0 mSdLazyCounter, 43603 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47011.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5928 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.21ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 43603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61812.10ms IncrementalHoareTripleChecker+Time [2021-11-04 04:29:37,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5928 Valid, 0 Invalid, 43635 Unknown, 0 Unchecked, 74.21ms Time], IncrementalHoareTripleChecker [32 Valid, 43603 Invalid, 0 Unknown, 0 Unchecked, 61812.10ms Time] [2021-11-04 04:29:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94351 states. [2021-11-04 04:29:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94351 to 55797. [2021-11-04 04:29:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55797 states, 55796 states have (on average 1.3832891246684351) internal successors, (77182), 55796 states have internal predecessors, (77182), 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) [2021-11-04 04:29:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55797 states to 55797 states and 77182 transitions. [2021-11-04 04:29:40,844 INFO L78 Accepts]: Start accepts. Automaton has 55797 states and 77182 transitions. Word has length 125 [2021-11-04 04:29:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:29:40,845 INFO L470 AbstractCegarLoop]: Abstraction has 55797 states and 77182 transitions. [2021-11-04 04:29:40,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-11-04 04:29:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 55797 states and 77182 transitions. [2021-11-04 04:29:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-04 04:29:40,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:29:40,923 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:29:40,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 04:29:40,924 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:29:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:29:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1008133905, now seen corresponding path program 1 times [2021-11-04 04:29:40,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:29:40,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966154442] [2021-11-04 04:29:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:29:40,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:29:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:29:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 04:29:41,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:29:41,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966154442] [2021-11-04 04:29:41,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966154442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:29:41,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:29:41,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:29:41,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038154270] [2021-11-04 04:29:41,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:29:41,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:29:41,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:29:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:29:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:29:41,049 INFO L87 Difference]: Start difference. First operand 55797 states and 77182 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-04 04:30:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:30:37,464 INFO L93 Difference]: Finished difference Result 146195 states and 203292 transitions. [2021-11-04 04:30:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:30:37,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 125 [2021-11-04 04:30:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:30:37,634 INFO L225 Difference]: With dead ends: 146195 [2021-11-04 04:30:37,634 INFO L226 Difference]: Without dead ends: 90421 [2021-11-04 04:30:37,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:30:37,699 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6433 mSDsluCounter, 5971 mSDsCounter, 0 mSdLazyCounter, 17068 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36570.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6433 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.87ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 17068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50756.05ms IncrementalHoareTripleChecker+Time [2021-11-04 04:30:37,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6433 Valid, 0 Invalid, 17084 Unknown, 0 Unchecked, 34.87ms Time], IncrementalHoareTripleChecker [16 Valid, 17068 Invalid, 0 Unknown, 0 Unchecked, 50756.05ms Time] [2021-11-04 04:30:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90421 states. Killed by 15