./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.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 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 05:53:38,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 05:53:38,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 05:53:38,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 05:53:38,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 05:53:38,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 05:53:38,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 05:53:38,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 05:53:38,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 05:53:38,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 05:53:38,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 05:53:38,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 05:53:38,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 05:53:38,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 05:53:38,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 05:53:38,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 05:53:38,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 05:53:38,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 05:53:38,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 05:53:38,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 05:53:38,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 05:53:38,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 05:53:38,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 05:53:38,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 05:53:38,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 05:53:38,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 05:53:38,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 05:53:38,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 05:53:38,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 05:53:38,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 05:53:38,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 05:53:38,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 05:53:38,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 05:53:38,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 05:53:38,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 05:53:38,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 05:53:38,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 05:53:38,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 05:53:38,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 05:53:38,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 05:53:38,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 05:53:38,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 05:53:38,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 05:53:38,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 05:53:38,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 05:53:38,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 05:53:38,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 05:53:38,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 05:53:38,185 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 05:53:38,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 05:53:38,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 05:53:38,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 05:53:38,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 05:53:38,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 05:53:38,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 05:53:38,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 05:53:38,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 05:53:38,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 05:53:38,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 05:53:38,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:53:38,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 05:53:38,188 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 05:53:38,189 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 05:53:38,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 05:53:38,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 05:53:38,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-04 05:53:38,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 05:53:38,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 05:53:38,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 05:53:38,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 05:53:38,380 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 05:53:38,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-04 05:53:38,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b74ec36b/be5999631dc847b587d547fc1266e226/FLAGf548e55d2 [2021-11-04 05:53:38,954 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 05:53:38,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-04 05:53:38,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b74ec36b/be5999631dc847b587d547fc1266e226/FLAGf548e55d2 [2021-11-04 05:53:39,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b74ec36b/be5999631dc847b587d547fc1266e226 [2021-11-04 05:53:39,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 05:53:39,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 05:53:39,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 05:53:39,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 05:53:39,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 05:53:39,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:53:39" (1/1) ... [2021-11-04 05:53:39,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583fc23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:39, skipping insertion in model container [2021-11-04 05:53:39,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:53:39" (1/1) ... [2021-11-04 05:53:39,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 05:53:39,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 05:53:40,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-04 05:53:40,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:53:40,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 05:53:40,793 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i[230653,230666] [2021-11-04 05:53:40,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:53:40,880 INFO L208 MainTranslator]: Completed translation [2021-11-04 05:53:40,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40 WrapperNode [2021-11-04 05:53:40,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 05:53:40,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 05:53:40,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 05:53:40,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 05:53:40,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:40,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:43,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 05:53:43,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 05:53:43,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 05:53:43,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 05:53:43,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:43,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:44,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:44,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:45,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:46,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:46,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:47,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 05:53:47,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 05:53:47,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 05:53:47,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 05:53:47,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (1/1) ... [2021-11-04 05:53:47,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:53:47,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:53:47,051 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 05:53:47,064 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 05:53:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-04 05:53:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-04 05:53:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-04 05:53:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-04 05:53:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 05:53:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-04 05:53:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 05:53:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-04 05:53:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-04 05:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 05:53:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 05:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-04 05:53:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-04 05:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-04 05:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 05:53:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 05:53:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 05:53:56,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 05:53:56,450 INFO L299 CfgBuilder]: Removed 26179 assume(true) statements. [2021-11-04 05:53:56,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:53:56 BoogieIcfgContainer [2021-11-04 05:53:56,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 05:53:56,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 05:53:56,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 05:53:56,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 05:53:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:53:39" (1/3) ... [2021-11-04 05:53:56,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7232f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:53:56, skipping insertion in model container [2021-11-04 05:53:56,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:53:40" (2/3) ... [2021-11-04 05:53:56,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7232f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:53:56, skipping insertion in model container [2021-11-04 05:53:56,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:53:56" (3/3) ... [2021-11-04 05:53:56,480 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-04 05:53:56,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 05:53:56,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-04 05:53:56,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 05:53:56,577 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 05:53:56,577 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-04 05:53:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 26703 states, 26675 states have (on average 1.4164948453608248) internal successors, (37785), 26680 states have internal predecessors, (37785), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-04 05:53:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 05:53:57,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:53:57,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:53:57,019 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 05:53:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:53:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1949403803, now seen corresponding path program 1 times [2021-11-04 05:53:57,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:53:57,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995754155] [2021-11-04 05:53:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:53:57,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:53:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:53:57,485 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 05:53:57,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:53:57,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995754155] [2021-11-04 05:53:57,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995754155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:53:57,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:53:57,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:53:57,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014986083] [2021-11-04 05:53:57,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:53:57,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 05:53:57,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:53:57,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 05:53:57,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:53:57,565 INFO L87 Difference]: Start difference. First operand has 26703 states, 26675 states have (on average 1.4164948453608248) internal successors, (37785), 26680 states have internal predecessors, (37785), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:54:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:54:31,395 INFO L93 Difference]: Finished difference Result 53402 states and 75640 transitions. [2021-11-04 05:54:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 05:54:31,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 05:54:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:54:31,518 INFO L225 Difference]: With dead ends: 53402 [2021-11-04 05:54:31,518 INFO L226 Difference]: Without dead ends: 26689 [2021-11-04 05:54:31,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:54:31,584 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26946.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 37682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32668.76ms IncrementalHoareTripleChecker+Time [2021-11-04 05:54:31,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 37682 Unknown, 0 Unchecked, 32.23ms Time], IncrementalHoareTripleChecker [0 Valid, 37682 Invalid, 0 Unknown, 0 Unchecked, 32668.76ms Time] [2021-11-04 05:54:31,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26689 states. [2021-11-04 05:54:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26689 to 26689. [2021-11-04 05:54:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26689 states, 26662 states have (on average 1.4127972395169155) internal successors, (37668), 26666 states have internal predecessors, (37668), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-04 05:54:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26689 states to 26689 states and 37698 transitions. [2021-11-04 05:54:32,235 INFO L78 Accepts]: Start accepts. Automaton has 26689 states and 37698 transitions. Word has length 96 [2021-11-04 05:54:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:54:32,235 INFO L470 AbstractCegarLoop]: Abstraction has 26689 states and 37698 transitions. [2021-11-04 05:54:32,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:54:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 26689 states and 37698 transitions. [2021-11-04 05:54:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 05:54:32,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:54:32,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:54:32,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 05:54:32,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 05:54:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:54:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 329765497, now seen corresponding path program 1 times [2021-11-04 05:54:32,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:54:32,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40868019] [2021-11-04 05:54:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:54:32,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:54:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:54:32,443 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 05:54:32,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:54:32,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40868019] [2021-11-04 05:54:32,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40868019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:54:32,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:54:32,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:54:32,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298306242] [2021-11-04 05:54:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:54:32,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:54:32,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:54:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:54:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:54:32,446 INFO L87 Difference]: Start difference. First operand 26689 states and 37698 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:55:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:55:26,263 INFO L93 Difference]: Finished difference Result 53333 states and 75357 transitions. [2021-11-04 05:55:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:55:26,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-04 05:55:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:55:26,332 INFO L225 Difference]: With dead ends: 53333 [2021-11-04 05:55:26,332 INFO L226 Difference]: Without dead ends: 26696 [2021-11-04 05:55:26,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:55:26,379 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 37641 mSDsCounter, 0 mSdLazyCounter, 75329 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44918.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.44ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52711.44ms IncrementalHoareTripleChecker+Time [2021-11-04 05:55:26,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 75341 Unknown, 0 Unchecked, 102.44ms Time], IncrementalHoareTripleChecker [12 Valid, 75329 Invalid, 0 Unknown, 0 Unchecked, 52711.44ms Time] [2021-11-04 05:55:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26696 states. [2021-11-04 05:55:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26696 to 26696. [2021-11-04 05:55:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26696 states, 26669 states have (on average 1.4126888897221492) internal successors, (37675), 26673 states have internal predecessors, (37675), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-04 05:55:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26696 states to 26696 states and 37705 transitions. [2021-11-04 05:55:26,836 INFO L78 Accepts]: Start accepts. Automaton has 26696 states and 37705 transitions. Word has length 96 [2021-11-04 05:55:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:55:26,837 INFO L470 AbstractCegarLoop]: Abstraction has 26696 states and 37705 transitions. [2021-11-04 05:55:26,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:55:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 26696 states and 37705 transitions. [2021-11-04 05:55:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 05:55:26,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:55:26,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:55:26,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 05:55:26,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 05:55:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:55:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2039335336, now seen corresponding path program 1 times [2021-11-04 05:55:26,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:55:26,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951309190] [2021-11-04 05:55:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:55:26,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:55:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 05:55:27,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:55:27,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951309190] [2021-11-04 05:55:27,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951309190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:55:27,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:55:27,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:55:27,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731888985] [2021-11-04 05:55:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:55:27,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:55:27,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:55:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:55:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:55:27,007 INFO L87 Difference]: Start difference. First operand 26696 states and 37705 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:56:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:56:21,496 INFO L93 Difference]: Finished difference Result 53338 states and 75356 transitions. [2021-11-04 05:56:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:56:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-04 05:56:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:56:21,562 INFO L225 Difference]: With dead ends: 53338 [2021-11-04 05:56:21,563 INFO L226 Difference]: Without dead ends: 26698 [2021-11-04 05:56:21,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:56:21,619 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 37641 mSDsCounter, 0 mSdLazyCounter, 75334 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45677.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 96.95ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53368.77ms IncrementalHoareTripleChecker+Time [2021-11-04 05:56:21,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 75336 Unknown, 0 Unchecked, 96.95ms Time], IncrementalHoareTripleChecker [2 Valid, 75334 Invalid, 0 Unknown, 0 Unchecked, 53368.77ms Time] [2021-11-04 05:56:21,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26698 states. [2021-11-04 05:56:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26698 to 26698. [2021-11-04 05:56:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26698 states, 26671 states have (on average 1.4126579430842487) internal successors, (37677), 26675 states have internal predecessors, (37677), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-04 05:56:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26698 states to 26698 states and 37707 transitions. [2021-11-04 05:56:22,158 INFO L78 Accepts]: Start accepts. Automaton has 26698 states and 37707 transitions. Word has length 103 [2021-11-04 05:56:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:56:22,158 INFO L470 AbstractCegarLoop]: Abstraction has 26698 states and 37707 transitions. [2021-11-04 05:56:22,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:56:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 26698 states and 37707 transitions. [2021-11-04 05:56:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 05:56:22,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:56:22,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:56:22,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 05:56:22,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 05:56:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:56:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1356495700, now seen corresponding path program 1 times [2021-11-04 05:56:22,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:56:22,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957820178] [2021-11-04 05:56:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:56:22,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:56:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 05:56:22,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:56:22,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957820178] [2021-11-04 05:56:22,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957820178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:56:22,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:56:22,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:56:22,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895014612] [2021-11-04 05:56:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:56:22,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:56:22,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:56:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:56:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:56:22,372 INFO L87 Difference]: Start difference. First operand 26698 states and 37707 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 05:56:42,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:57:36,165 INFO L93 Difference]: Finished difference Result 79911 states and 112941 transitions. [2021-11-04 05:57:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:57:36,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 105 [2021-11-04 05:57:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:57:36,296 INFO L225 Difference]: With dead ends: 79911 [2021-11-04 05:57:36,296 INFO L226 Difference]: Without dead ends: 49127 [2021-11-04 05:57:36,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:57:36,347 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 37585 mSDsluCounter, 37602 mSDsCounter, 0 mSdLazyCounter, 75251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60846.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37585 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 75254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.69ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71882.45ms IncrementalHoareTripleChecker+Time [2021-11-04 05:57:36,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37585 Valid, 80 Invalid, 75254 Unknown, 0 Unchecked, 120.69ms Time], IncrementalHoareTripleChecker [3 Valid, 75251 Invalid, 0 Unknown, 0 Unchecked, 71882.45ms Time] [2021-11-04 05:57:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49127 states. [2021-11-04 05:57:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49127 to 49121. [2021-11-04 05:57:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49121 states, 49071 states have (on average 1.4135640194819752) internal successors, (69365), 49076 states have internal predecessors, (69365), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-04 05:57:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49121 states to 49121 states and 69430 transitions. [2021-11-04 05:57:37,361 INFO L78 Accepts]: Start accepts. Automaton has 49121 states and 69430 transitions. Word has length 105 [2021-11-04 05:57:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:57:37,362 INFO L470 AbstractCegarLoop]: Abstraction has 49121 states and 69430 transitions. [2021-11-04 05:57:37,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 05:57:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 49121 states and 69430 transitions. [2021-11-04 05:57:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-04 05:57:37,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:57:37,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:37,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 05:57:37,392 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 05:57:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:57:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1369030695, now seen corresponding path program 1 times [2021-11-04 05:57:37,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:57:37,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73196662] [2021-11-04 05:57:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:57:37,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:57:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:57:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-04 05:57:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:57:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 05:57:37,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:57:37,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73196662] [2021-11-04 05:57:37,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73196662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:57:37,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:57:37,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 05:57:37,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963418671] [2021-11-04 05:57:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:57:37,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 05:57:37,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:57:37,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 05:57:37,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:57:37,607 INFO L87 Difference]: Start difference. First operand 49121 states and 69430 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 05:59:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:59:05,924 INFO L93 Difference]: Finished difference Result 107775 states and 152303 transitions. [2021-11-04 05:59:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 05:59:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2021-11-04 05:59:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:59:06,066 INFO L225 Difference]: With dead ends: 107775 [2021-11-04 05:59:06,066 INFO L226 Difference]: Without dead ends: 58743 [2021-11-04 05:59:06,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.81ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:59:06,141 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 9845 mSDsluCounter, 61107 mSDsCounter, 0 mSdLazyCounter, 124698 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73856.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 124717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 456.39ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 124698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85841.56ms IncrementalHoareTripleChecker+Time [2021-11-04 05:59:06,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9845 Valid, 74 Invalid, 124717 Unknown, 0 Unchecked, 456.39ms Time], IncrementalHoareTripleChecker [19 Valid, 124698 Invalid, 0 Unknown, 0 Unchecked, 85841.56ms Time] [2021-11-04 05:59:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58743 states. [2021-11-04 05:59:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58743 to 54455. [2021-11-04 05:59:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54455 states, 54405 states have (on average 1.4131973164231229) internal successors, (76885), 54410 states have internal predecessors, (76885), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-04 05:59:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54455 states to 54455 states and 76950 transitions. [2021-11-04 05:59:07,058 INFO L78 Accepts]: Start accepts. Automaton has 54455 states and 76950 transitions. Word has length 136 [2021-11-04 05:59:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:59:07,059 INFO L470 AbstractCegarLoop]: Abstraction has 54455 states and 76950 transitions. [2021-11-04 05:59:07,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 05:59:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 54455 states and 76950 transitions. [2021-11-04 05:59:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 05:59:07,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:59:07,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:07,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 05:59:07,097 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 05:59:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:59:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 913376784, now seen corresponding path program 1 times [2021-11-04 05:59:07,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:59:07,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917024808] [2021-11-04 05:59:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:59:07,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:59:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:59:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-04 05:59:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:59:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-04 05:59:07,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:59:07,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917024808] [2021-11-04 05:59:07,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917024808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:59:07,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:59:07,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 05:59:07,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788182542] [2021-11-04 05:59:07,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:59:07,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 05:59:07,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:59:07,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 05:59:07,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 05:59:07,317 INFO L87 Difference]: Start difference. First operand 54455 states and 76950 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 05:59:10,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:59:51,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:00:36,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:00:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:00:54,284 INFO L93 Difference]: Finished difference Result 108947 states and 153961 transitions. [2021-11-04 06:00:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 06:00:54,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 154 [2021-11-04 06:00:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:00:54,423 INFO L225 Difference]: With dead ends: 108947 [2021-11-04 06:00:54,423 INFO L226 Difference]: Without dead ends: 54575 [2021-11-04 06:00:54,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.37ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-04 06:00:54,513 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 132 mSDsluCounter, 95946 mSDsCounter, 0 mSdLazyCounter, 150729 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91241.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 150747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 366.40ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 150729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104660.87ms IncrementalHoareTripleChecker+Time [2021-11-04 06:00:54,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 105 Invalid, 150747 Unknown, 0 Unchecked, 366.40ms Time], IncrementalHoareTripleChecker [18 Valid, 150729 Invalid, 0 Unknown, 0 Unchecked, 104660.87ms Time] [2021-11-04 06:00:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54575 states. [2021-11-04 06:00:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54575 to 54458. [2021-11-04 06:00:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54458 states, 54408 states have (on average 1.4131377738567859) internal successors, (76886), 54413 states have internal predecessors, (76886), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-04 06:00:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54458 states to 54458 states and 76951 transitions. [2021-11-04 06:00:55,361 INFO L78 Accepts]: Start accepts. Automaton has 54458 states and 76951 transitions. Word has length 154 [2021-11-04 06:00:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:00:55,362 INFO L470 AbstractCegarLoop]: Abstraction has 54458 states and 76951 transitions. [2021-11-04 06:00:55,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 06:00:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 54458 states and 76951 transitions. [2021-11-04 06:00:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-04 06:00:55,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:00:55,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:55,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 06:00:55,396 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 06:00:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:00:55,397 INFO L85 PathProgramCache]: Analyzing trace with hash 382721175, now seen corresponding path program 1 times [2021-11-04 06:00:55,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:00:55,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386825788] [2021-11-04 06:00:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:00:55,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:00:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:00:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-04 06:00:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:00:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 06:00:55,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:00:55,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386825788] [2021-11-04 06:00:55,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386825788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:00:55,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949727249] [2021-11-04 06:00:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:00:55,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:00:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:00:55,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 06:00:55,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 06:00:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:00:56,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3156 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 06:00:56,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:00:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 06:00:57,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 06:00:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 06:00:57,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949727249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 06:00:57,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 06:00:57,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-11-04 06:00:57,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625800603] [2021-11-04 06:00:57,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 06:00:57,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 06:00:57,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:00:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 06:00:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-04 06:00:57,408 INFO L87 Difference]: Start difference. First operand 54458 states and 76951 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-04 06:01:00,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:03:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 06:03:22,890 INFO L93 Difference]: Finished difference Result 109081 states and 154201 transitions. [2021-11-04 06:03:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-04 06:03:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 158 [2021-11-04 06:03:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 06:03:23,003 INFO L225 Difference]: With dead ends: 109081 [2021-11-04 06:03:23,003 INFO L226 Difference]: Without dead ends: 54676 [2021-11-04 06:03:23,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 71.46ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-04 06:03:23,082 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 123 mSDsluCounter, 171087 mSDsCounter, 0 mSdLazyCounter, 226086 mSolverCounterSat, 175 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124376.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 226262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 491.65ms SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 226086 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142613.57ms IncrementalHoareTripleChecker+Time [2021-11-04 06:03:23,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 167 Invalid, 226262 Unknown, 0 Unchecked, 491.65ms Time], IncrementalHoareTripleChecker [175 Valid, 226086 Invalid, 1 Unknown, 0 Unchecked, 142613.57ms Time] [2021-11-04 06:03:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54676 states. [2021-11-04 06:03:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54676 to 54565. [2021-11-04 06:03:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54565 states, 54515 states have (on average 1.412326882509401) internal successors, (76993), 54520 states have internal predecessors, (76993), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (35), 30 states have call predecessors, (35), 30 states have call successors, (35) [2021-11-04 06:03:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54565 states to 54565 states and 77058 transitions. [2021-11-04 06:03:23,939 INFO L78 Accepts]: Start accepts. Automaton has 54565 states and 77058 transitions. Word has length 158 [2021-11-04 06:03:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 06:03:23,939 INFO L470 AbstractCegarLoop]: Abstraction has 54565 states and 77058 transitions. [2021-11-04 06:03:23,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-04 06:03:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 54565 states and 77058 transitions. [2021-11-04 06:03:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-04 06:03:23,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 06:03:23,966 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 06:03:23,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 06:03:24,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:03:24,184 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-04 06:03:24,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 06:03:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash -758645206, now seen corresponding path program 2 times [2021-11-04 06:03:24,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 06:03:24,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964249724] [2021-11-04 06:03:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 06:03:24,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 06:03:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:03:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-04 06:03:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 06:03:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-04 06:03:24,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 06:03:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964249724] [2021-11-04 06:03:24,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964249724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 06:03:24,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198790250] [2021-11-04 06:03:24,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 06:03:24,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 06:03:24,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 06:03:24,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 06:03:24,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 06:03:46,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 06:03:46,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 06:03:46,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-04 06:03:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 06:03:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-04 06:03:47,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 06:03:47,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198790250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 06:03:47,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 06:03:47,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2021-11-04 06:03:47,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715784862] [2021-11-04 06:03:47,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 06:03:47,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 06:03:47,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 06:03:47,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 06:03:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-04 06:03:47,214 INFO L87 Difference]: Start difference. First operand 54565 states and 77058 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 06:03:49,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:03:51,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 06:03:54,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15