./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-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-5f08f0f [2021-11-05 17:43:41,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:43:41,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:43:41,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:43:41,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:43:41,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:43:41,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:43:41,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:43:41,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:43:41,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:43:41,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:43:41,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:43:41,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:43:41,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:43:41,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:43:41,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:43:41,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:43:41,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:43:41,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:43:41,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:43:41,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:43:41,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:43:41,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:43:41,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:43:41,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:43:41,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:43:41,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:43:41,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:43:41,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:43:41,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:43:41,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:43:41,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:43:41,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:43:41,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:43:41,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:43:41,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:43:41,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:43:41,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:43:41,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:43:41,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:43:41,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:43:41,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:43:41,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:43:41,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:43:41,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:43:41,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:43:41,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:43:41,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:43:41,775 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:43:41,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:43:41,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:43:41,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:43:41,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:43:41,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:43:41,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:43:41,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:43:41,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:43:41,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:43:41,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:43:41,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:43:41,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:43:41,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:43:41,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:43:41,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:43:41,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:43:41,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:43:41,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:43:41,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:43:41,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:43:41,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:43:41,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:43:41,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de3702172247e9daf688602f826d117afa5d623a980b5c7e35d9c75cbe83a45 [2021-11-05 17:43:42,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:43:42,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:43:42,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:43:42,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:43:42,033 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:43:42,034 INFO L432 ainManager$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 [2021-11-05 17:43:42,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e95c45d/1bedf21a3dbd4aab877073cf42469299/FLAGc38196c24 [2021-11-05 17:43:42,711 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:43:42,712 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 [2021-11-05 17:43:42,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e95c45d/1bedf21a3dbd4aab877073cf42469299/FLAGc38196c24 [2021-11-05 17:43:43,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e95c45d/1bedf21a3dbd4aab877073cf42469299 [2021-11-05 17:43:43,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:43:43,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:43:43,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:43:43,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:43:43,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:43:43,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:43:43" (1/1) ... [2021-11-05 17:43:43,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287d2802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:43, skipping insertion in model container [2021-11-05 17:43:43,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:43:43" (1/1) ... [2021-11-05 17:43:43,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:43:43,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:43:44,263 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] [2021-11-05 17:43:44,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:43:44,337 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:43:44,621 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] [2021-11-05 17:43:44,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:43:44,691 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:43:44,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44 WrapperNode [2021-11-05 17:43:44,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:43:44,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:43:44,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:43:44,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:43:44,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:44,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:47,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:43:47,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:43:47,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:43:47,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:43:47,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:47,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:48,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:48,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:49,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:50,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:50,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:51,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:43:51,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:43:51,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:43:51,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:43:51,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (1/1) ... [2021-11-05 17:43:51,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:43:51,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:43:51,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 17:43:51,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 17:43:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-05 17:43:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_ctr [2021-11-05 17:43:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_ctr [2021-11-05 17:43:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure parse_path_selector [2021-11-05 17:43:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_path_selector [2021-11-05 17:43:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure multipath_dtr [2021-11-05 17:43:51,167 INFO L138 BoogieDeclarations]: Found implementation of procedure multipath_dtr [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure free_priority_group [2021-11-05 17:43:51,168 INFO L138 BoogieDeclarations]: Found implementation of procedure free_priority_group [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:43:51,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:43:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-05 17:43:51,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-05 17:43:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:43:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 17:43:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure parse_priority_group [2021-11-05 17:43:51,169 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_priority_group [2021-11-05 17:43:51,169 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:43:51,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:43:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure free_multipath [2021-11-05 17:43:51,170 INFO L138 BoogieDeclarations]: Found implementation of procedure free_multipath [2021-11-05 17:43:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free_slab [2021-11-05 17:43:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:43:51,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:43:51,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:44:32,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:44:32,292 INFO L299 CfgBuilder]: Removed 26179 assume(true) statements. [2021-11-05 17:44:32,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:44:32 BoogieIcfgContainer [2021-11-05 17:44:32,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:44:32,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:44:32,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:44:32,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:44:32,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:43:43" (1/3) ... [2021-11-05 17:44:32,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584ebc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:44:32, skipping insertion in model container [2021-11-05 17:44:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:43:44" (2/3) ... [2021-11-05 17:44:32,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584ebc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:44:32, skipping insertion in model container [2021-11-05 17:44:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:44:32" (3/3) ... [2021-11-05 17:44:32,318 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--md--dm-multipath.ko-entry_point.cil.out.i [2021-11-05 17:44:32,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:44:32,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-05 17:44:32,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:44:32,404 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 17:44:32,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-05 17:44:32,645 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) [2021-11-05 17:44:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 17:44:32,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:44:32,669 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] [2021-11-05 17:44:32,670 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)] === [2021-11-05 17:44:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:44:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1949403803, now seen corresponding path program 1 times [2021-11-05 17:44:32,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:44:32,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196044180] [2021-11-05 17:44:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:32,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:44:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:44:33,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:44:33,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196044180] [2021-11-05 17:44:33,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196044180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:44:33,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:44:33,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:44:33,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656987335] [2021-11-05 17:44:33,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:44:33,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 17:44:33,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:44:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 17:44:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:44:33,101 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) [2021-11-05 17:44:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:44:33,930 INFO L93 Difference]: Finished difference Result 53402 states and 75640 transitions. [2021-11-05 17:44:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 17:44:33,932 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 [2021-11-05 17:44:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:44:34,062 INFO L225 Difference]: With dead ends: 53402 [2021-11-05 17:44:34,062 INFO L226 Difference]: Without dead ends: 26689 [2021-11-05 17:44:34,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 17:44:34,148 INFO L933 BasicCegarLoop]: 37722 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37722 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 17:44:34,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37722 Invalid, 0 Unknown, 0 Unchecked, 60.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 17:44:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26689 states. [2021-11-05 17:44:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26689 to 26689. [2021-11-05 17:44:34,979 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) [2021-11-05 17:44:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26689 states to 26689 states and 37698 transitions. [2021-11-05 17:44:35,059 INFO L78 Accepts]: Start accepts. Automaton has 26689 states and 37698 transitions. Word has length 96 [2021-11-05 17:44:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:44:35,061 INFO L470 AbstractCegarLoop]: Abstraction has 26689 states and 37698 transitions. [2021-11-05 17:44:35,061 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) [2021-11-05 17:44:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 26689 states and 37698 transitions. [2021-11-05 17:44:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 17:44:35,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:44:35,067 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] [2021-11-05 17:44:35,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:44:35,067 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)] === [2021-11-05 17:44:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:44:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash 329765497, now seen corresponding path program 1 times [2021-11-05 17:44:35,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:44:35,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079424667] [2021-11-05 17:44:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:35,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:44:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:44:35,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:44:35,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079424667] [2021-11-05 17:44:35,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079424667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:44:35,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:44:35,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 17:44:35,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893059862] [2021-11-05 17:44:35,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:44:35,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:44:35,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:44:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:44:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:44:35,327 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), 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) [2021-11-05 17:44:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:44:36,559 INFO L93 Difference]: Finished difference Result 79902 states and 112932 transitions. [2021-11-05 17:44:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:44:36,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) 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 [2021-11-05 17:44:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:44:36,726 INFO L225 Difference]: With dead ends: 79902 [2021-11-05 17:44:36,726 INFO L226 Difference]: Without dead ends: 49118 [2021-11-05 17:44:36,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:44:36,800 INFO L933 BasicCegarLoop]: 37712 mSDtfsCounter, 37594 mSDsluCounter, 37602 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37594 SdHoareTripleChecker+Valid, 75314 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.79ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.13ms IncrementalHoareTripleChecker+Time [2021-11-05 17:44:36,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37594 Valid, 75314 Invalid, 20 Unknown, 0 Unchecked, 94.79ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 26.13ms Time] [2021-11-05 17:44:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49118 states. [2021-11-05 17:44:37,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49118 to 49112. [2021-11-05 17:44:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49112 states, 49062 states have (on average 1.4136398842281195) internal successors, (69356), 49067 states have internal predecessors, (69356), 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) [2021-11-05 17:44:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49112 states to 49112 states and 69421 transitions. [2021-11-05 17:44:37,911 INFO L78 Accepts]: Start accepts. Automaton has 49112 states and 69421 transitions. Word has length 96 [2021-11-05 17:44:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:44:37,914 INFO L470 AbstractCegarLoop]: Abstraction has 49112 states and 69421 transitions. [2021-11-05 17:44:37,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) 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) [2021-11-05 17:44:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 49112 states and 69421 transitions. [2021-11-05 17:44:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 17:44:37,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:44:37,947 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] [2021-11-05 17:44:37,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 17:44:37,948 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:44:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:44:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1857091770, now seen corresponding path program 1 times [2021-11-05 17:44:37,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:44:37,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173538694] [2021-11-05 17:44:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:44:37,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:44:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-05 17:44:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:44:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:44:38,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:44:38,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173538694] [2021-11-05 17:44:38,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173538694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:44:38,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:44:38,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:44:38,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816060943] [2021-11-05 17:44:38,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:44:38,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:44:38,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:44:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:44:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:44:38,202 INFO L87 Difference]: Start difference. First operand 49112 states and 69421 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 17:44:40,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:45:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:45:12,719 INFO L93 Difference]: Finished difference Result 107766 states and 152294 transitions. [2021-11-05 17:45:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:45:12,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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 127 [2021-11-05 17:45:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:45:12,903 INFO L225 Difference]: With dead ends: 107766 [2021-11-05 17:45:12,904 INFO L226 Difference]: Without dead ends: 58734 [2021-11-05 17:45:12,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.38ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:45:12,995 INFO L933 BasicCegarLoop]: 43560 mSDtfsCounter, 9845 mSDsluCounter, 61107 mSDsCounter, 0 mSdLazyCounter, 20104 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29095.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9845 SdHoareTripleChecker+Valid, 104667 SdHoareTripleChecker+Invalid, 20124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 206.06ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 20104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32961.10ms IncrementalHoareTripleChecker+Time [2021-11-05 17:45:12,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9845 Valid, 104667 Invalid, 20124 Unknown, 0 Unchecked, 206.06ms Time], IncrementalHoareTripleChecker [19 Valid, 20104 Invalid, 1 Unknown, 0 Unchecked, 32961.10ms Time] [2021-11-05 17:45:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58734 states. [2021-11-05 17:45:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58734 to 54446. [2021-11-05 17:45:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54446 states, 54396 states have (on average 1.4132656813000957) internal successors, (76876), 54401 states have internal predecessors, (76876), 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) [2021-11-05 17:45:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54446 states to 54446 states and 76941 transitions. [2021-11-05 17:45:14,430 INFO L78 Accepts]: Start accepts. Automaton has 54446 states and 76941 transitions. Word has length 127 [2021-11-05 17:45:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:45:14,432 INFO L470 AbstractCegarLoop]: Abstraction has 54446 states and 76941 transitions. [2021-11-05 17:45:14,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 17:45:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 54446 states and 76941 transitions. [2021-11-05 17:45:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 17:45:14,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:45:14,467 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] [2021-11-05 17:45:14,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 17:45:14,467 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:45:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:45:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash 973103075, now seen corresponding path program 1 times [2021-11-05 17:45:14,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:45:14,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571363196] [2021-11-05 17:45:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:45:14,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:45:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:45:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-05 17:45:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:45:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:45:14,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:45:14,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571363196] [2021-11-05 17:45:14,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571363196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:45:14,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:45:14,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 17:45:14,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484976163] [2021-11-05 17:45:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:45:14,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:45:14,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:45:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:45:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:45:14,702 INFO L87 Difference]: Start difference. First operand 54446 states and 76941 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-11-05 17:45:16,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:45:18,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:45:30,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:45:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:45:49,551 INFO L93 Difference]: Finished difference Result 108938 states and 153952 transitions. [2021-11-05 17:45:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 17:45:49,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 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 145 [2021-11-05 17:45:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:45:49,704 INFO L225 Difference]: With dead ends: 108938 [2021-11-05 17:45:49,704 INFO L226 Difference]: Without dead ends: 54566 [2021-11-05 17:45:49,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.33ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 17:45:49,792 INFO L933 BasicCegarLoop]: 37676 mSDtfsCounter, 132 mSDsluCounter, 95946 mSDsCounter, 0 mSdLazyCounter, 17210 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29301.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 133622 SdHoareTripleChecker+Invalid, 17230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 203.95ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32973.25ms IncrementalHoareTripleChecker+Time [2021-11-05 17:45:49,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 133622 Invalid, 17230 Unknown, 0 Unchecked, 203.95ms Time], IncrementalHoareTripleChecker [18 Valid, 17210 Invalid, 2 Unknown, 0 Unchecked, 32973.25ms Time] [2021-11-05 17:45:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54566 states. [2021-11-05 17:45:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54566 to 54449. [2021-11-05 17:45:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54449 states, 54399 states have (on average 1.413206125112594) internal successors, (76877), 54404 states have internal predecessors, (76877), 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) [2021-11-05 17:45:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54449 states to 54449 states and 76942 transitions. [2021-11-05 17:45:50,996 INFO L78 Accepts]: Start accepts. Automaton has 54449 states and 76942 transitions. Word has length 145 [2021-11-05 17:45:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:45:51,000 INFO L470 AbstractCegarLoop]: Abstraction has 54449 states and 76942 transitions. [2021-11-05 17:45:51,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-11-05 17:45:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 54449 states and 76942 transitions. [2021-11-05 17:45:51,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 17:45:51,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:45:51,039 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] [2021-11-05 17:45:51,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 17:45:51,039 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)] === [2021-11-05 17:45:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:45:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1398270742, now seen corresponding path program 1 times [2021-11-05 17:45:51,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:45:51,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824637186] [2021-11-05 17:45:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:45:51,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:45:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:45:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-05 17:45:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:45:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:45:51,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:45:51,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824637186] [2021-11-05 17:45:51,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824637186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:45:51,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:45:51,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 17:45:51,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116306981] [2021-11-05 17:45:51,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:45:51,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 17:45:51,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:45:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 17:45:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 17:45:51,388 INFO L87 Difference]: Start difference. First operand 54449 states and 76942 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-05 17:45:53,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:45:55,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:46:08,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:46:09,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:46:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:46:25,405 INFO L93 Difference]: Finished difference Result 108952 states and 153962 transitions. [2021-11-05 17:46:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 17:46:25,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 149 [2021-11-05 17:46:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:46:25,530 INFO L225 Difference]: With dead ends: 108952 [2021-11-05 17:46:25,530 INFO L226 Difference]: Without dead ends: 54573 [2021-11-05 17:46:25,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.00ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 17:46:25,620 INFO L933 BasicCegarLoop]: 37678 mSDtfsCounter, 138 mSDsluCounter, 133619 mSDsCounter, 0 mSdLazyCounter, 17278 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28578.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 171297 SdHoareTripleChecker+Invalid, 17298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 211.10ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 17278 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32334.90ms IncrementalHoareTripleChecker+Time [2021-11-05 17:46:25,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 171297 Invalid, 17298 Unknown, 0 Unchecked, 211.10ms Time], IncrementalHoareTripleChecker [18 Valid, 17278 Invalid, 2 Unknown, 0 Unchecked, 32334.90ms Time] [2021-11-05 17:46:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54573 states. [2021-11-05 17:46:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54573 to 54451. [2021-11-05 17:46:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54451 states, 54401 states have (on average 1.4131541699601111) internal successors, (76877), 54406 states have internal predecessors, (76877), 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) [2021-11-05 17:46:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54451 states to 54451 states and 76942 transitions. [2021-11-05 17:46:26,765 INFO L78 Accepts]: Start accepts. Automaton has 54451 states and 76942 transitions. Word has length 149 [2021-11-05 17:46:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:46:26,766 INFO L470 AbstractCegarLoop]: Abstraction has 54451 states and 76942 transitions. [2021-11-05 17:46:26,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-05 17:46:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 54451 states and 76942 transitions. [2021-11-05 17:46:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-05 17:46:26,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:46:26,797 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] [2021-11-05 17:46:26,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 17:46:26,797 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)] === [2021-11-05 17:46:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:46:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -611164369, now seen corresponding path program 1 times [2021-11-05 17:46:26,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:46:26,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085484968] [2021-11-05 17:46:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:46:26,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:46:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:46:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-05 17:46:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:46:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:46:27,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:46:27,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085484968] [2021-11-05 17:46:27,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085484968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:46:27,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:46:27,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 17:46:27,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594326155] [2021-11-05 17:46:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:46:27,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 17:46:27,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:46:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 17:46:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 17:46:27,298 INFO L87 Difference]: Start difference. First operand 54451 states and 76942 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-05 17:46:29,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:47:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:47:09,148 INFO L93 Difference]: Finished difference Result 134274 states and 190055 transitions. [2021-11-05 17:47:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 17:47:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 149 [2021-11-05 17:47:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:47:09,312 INFO L225 Difference]: With dead ends: 134274 [2021-11-05 17:47:09,313 INFO L226 Difference]: Without dead ends: 79895 [2021-11-05 17:47:09,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 87.81ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-05 17:47:09,405 INFO L933 BasicCegarLoop]: 57051 mSDtfsCounter, 20794 mSDsluCounter, 182839 mSDsCounter, 0 mSdLazyCounter, 26182 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34742.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20799 SdHoareTripleChecker+Valid, 239890 SdHoareTripleChecker+Invalid, 26228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 333.46ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 26182 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39612.66ms IncrementalHoareTripleChecker+Time [2021-11-05 17:47:09,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20799 Valid, 239890 Invalid, 26228 Unknown, 0 Unchecked, 333.46ms Time], IncrementalHoareTripleChecker [45 Valid, 26182 Invalid, 1 Unknown, 0 Unchecked, 39612.66ms Time] [2021-11-05 17:47:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2021-11-05 17:47:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 54454. [2021-11-05 17:47:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54454 states, 54404 states have (on average 1.4130946253951915) internal successors, (76878), 54409 states have internal predecessors, (76878), 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) [2021-11-05 17:47:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54454 states to 54454 states and 76943 transitions. [2021-11-05 17:47:10,645 INFO L78 Accepts]: Start accepts. Automaton has 54454 states and 76943 transitions. Word has length 149 [2021-11-05 17:47:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:47:10,645 INFO L470 AbstractCegarLoop]: Abstraction has 54454 states and 76943 transitions. [2021-11-05 17:47:10,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-11-05 17:47:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 54454 states and 76943 transitions. [2021-11-05 17:47:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-05 17:47:10,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:47:10,668 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] [2021-11-05 17:47:10,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 17:47:10,668 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)] === [2021-11-05 17:47:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:47:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1983069607, now seen corresponding path program 1 times [2021-11-05 17:47:10,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:47:10,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642886832] [2021-11-05 17:47:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:47:10,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:47:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:47:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-05 17:47:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:47:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 17:47:11,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:47:11,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642886832] [2021-11-05 17:47:11,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642886832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:47:11,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:47:11,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 17:47:11,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553413784] [2021-11-05 17:47:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:47:11,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 17:47:11,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:47:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 17:47:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-05 17:47:11,241 INFO L87 Difference]: Start difference. First operand 54454 states and 76943 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 9 states have internal predecessors, (148), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:47:13,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:47:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:47:42,727 INFO L93 Difference]: Finished difference Result 109231 states and 154369 transitions. [2021-11-05 17:47:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 17:47:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 9 states have internal predecessors, (148), 2 states have call successors, (4), 3 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 155 [2021-11-05 17:47:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:47:42,833 INFO L225 Difference]: With dead ends: 109231 [2021-11-05 17:47:42,834 INFO L226 Difference]: Without dead ends: 54857 [2021-11-05 17:47:42,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 210.07ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-11-05 17:47:42,920 INFO L933 BasicCegarLoop]: 37761 mSDtfsCounter, 444 mSDsluCounter, 284743 mSDsCounter, 0 mSdLazyCounter, 17700 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25803.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 322504 SdHoareTripleChecker+Invalid, 17737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 292.40ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 17700 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29464.30ms IncrementalHoareTripleChecker+Time [2021-11-05 17:47:42,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 322504 Invalid, 17737 Unknown, 0 Unchecked, 292.40ms Time], IncrementalHoareTripleChecker [36 Valid, 17700 Invalid, 1 Unknown, 0 Unchecked, 29464.30ms Time] [2021-11-05 17:47:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54857 states. [2021-11-05 17:47:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54857 to 54472. [2021-11-05 17:47:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54472 states, 54421 states have (on average 1.412965583138862) internal successors, (76895), 54427 states have internal predecessors, (76895), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:47:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54472 states to 54472 states and 76962 transitions. [2021-11-05 17:47:44,291 INFO L78 Accepts]: Start accepts. Automaton has 54472 states and 76962 transitions. Word has length 155 [2021-11-05 17:47:44,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:47:44,292 INFO L470 AbstractCegarLoop]: Abstraction has 54472 states and 76962 transitions. [2021-11-05 17:47:44,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 9 states have internal predecessors, (148), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:47:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 54472 states and 76962 transitions. [2021-11-05 17:47:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-05 17:47:44,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:47:44,314 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, 1, 1, 1] [2021-11-05 17:47:44,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 17:47:44,314 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)] === [2021-11-05 17:47:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:47:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -179505297, now seen corresponding path program 1 times [2021-11-05 17:47:44,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:47:44,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475501746] [2021-11-05 17:47:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:47:44,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:47:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:47:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-05 17:47:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:47:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 17:47:44,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:47:44,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475501746] [2021-11-05 17:47:44,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475501746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:47:44,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:47:44,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 17:47:44,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109208261] [2021-11-05 17:47:44,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:47:44,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 17:47:44,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:47:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 17:47:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:47:44,548 INFO L87 Difference]: Start difference. First operand 54472 states and 76962 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 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) [2021-11-05 17:47:46,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:47:57,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:48:00,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:48:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:48:15,186 INFO L93 Difference]: Finished difference Result 109033 states and 154085 transitions. [2021-11-05 17:48:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 17:48:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 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 161 [2021-11-05 17:48:15,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:48:15,298 INFO L225 Difference]: With dead ends: 109033 [2021-11-05 17:48:15,298 INFO L226 Difference]: Without dead ends: 54641 [2021-11-05 17:48:15,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 118.70ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 17:48:15,403 INFO L933 BasicCegarLoop]: 37698 mSDtfsCounter, 159 mSDsluCounter, 95960 mSDsCounter, 0 mSdLazyCounter, 17228 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25390.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 133658 SdHoareTripleChecker+Invalid, 17245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 187.81ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 17228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28752.40ms IncrementalHoareTripleChecker+Time [2021-11-05 17:48:15,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 133658 Invalid, 17245 Unknown, 0 Unchecked, 187.81ms Time], IncrementalHoareTripleChecker [16 Valid, 17228 Invalid, 1 Unknown, 0 Unchecked, 28752.40ms Time] [2021-11-05 17:48:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54641 states. [2021-11-05 17:48:16,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54641 to 54476. [2021-11-05 17:48:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54476 states, 54425 states have (on average 1.4129352319706017) internal successors, (76899), 54431 states have internal predecessors, (76899), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:48:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54476 states to 54476 states and 76966 transitions. [2021-11-05 17:48:16,845 INFO L78 Accepts]: Start accepts. Automaton has 54476 states and 76966 transitions. Word has length 161 [2021-11-05 17:48:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:48:16,845 INFO L470 AbstractCegarLoop]: Abstraction has 54476 states and 76966 transitions. [2021-11-05 17:48:16,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 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) [2021-11-05 17:48:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 54476 states and 76966 transitions. [2021-11-05 17:48:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-05 17:48:16,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:48:16,869 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, 1, 1, 1, 1, 1] [2021-11-05 17:48:16,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 17:48:16,870 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:48:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:48:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1014349614, now seen corresponding path program 1 times [2021-11-05 17:48:16,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:48:16,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412859293] [2021-11-05 17:48:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:48:16,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:48:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:48:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-05 17:48:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:48:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 17:48:17,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:48:17,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412859293] [2021-11-05 17:48:17,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412859293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:48:17,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:48:17,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 17:48:17,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131905383] [2021-11-05 17:48:17,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:48:17,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 17:48:17,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:48:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 17:48:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:48:17,385 INFO L87 Difference]: Start difference. First operand 54476 states and 76966 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-05 17:48:19,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:48:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:48:47,339 INFO L93 Difference]: Finished difference Result 109022 states and 154036 transitions. [2021-11-05 17:48:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 17:48:47,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 163 [2021-11-05 17:48:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:48:47,453 INFO L225 Difference]: With dead ends: 109022 [2021-11-05 17:48:47,453 INFO L226 Difference]: Without dead ends: 54598 [2021-11-05 17:48:47,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.21ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 17:48:47,547 INFO L933 BasicCegarLoop]: 37672 mSDtfsCounter, 123 mSDsluCounter, 58224 mSDsCounter, 0 mSdLazyCounter, 17194 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24863.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 95896 SdHoareTripleChecker+Invalid, 17224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 175.36ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 17194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28289.96ms IncrementalHoareTripleChecker+Time [2021-11-05 17:48:47,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 95896 Invalid, 17224 Unknown, 0 Unchecked, 175.36ms Time], IncrementalHoareTripleChecker [29 Valid, 17194 Invalid, 1 Unknown, 0 Unchecked, 28289.96ms Time] [2021-11-05 17:48:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54598 states. [2021-11-05 17:48:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54598 to 54483. [2021-11-05 17:48:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54483 states, 54432 states have (on average 1.412882128159906) internal successors, (76906), 54438 states have internal predecessors, (76906), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:48:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54483 states to 54483 states and 76973 transitions. [2021-11-05 17:48:48,856 INFO L78 Accepts]: Start accepts. Automaton has 54483 states and 76973 transitions. Word has length 163 [2021-11-05 17:48:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:48:48,856 INFO L470 AbstractCegarLoop]: Abstraction has 54483 states and 76973 transitions. [2021-11-05 17:48:48,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-11-05 17:48:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 54483 states and 76973 transitions. [2021-11-05 17:48:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-05 17:48:48,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:48:48,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:48:48,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 17:48:48,900 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:48:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:48:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2043892463, now seen corresponding path program 1 times [2021-11-05 17:48:48,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:48:48,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120122713] [2021-11-05 17:48:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:48:48,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:48:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:48:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-05 17:48:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:48:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 17:48:49,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:48:49,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120122713] [2021-11-05 17:48:49,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120122713] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:48:49,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931155532] [2021-11-05 17:48:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:48:49,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:48:49,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:48:49,737 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) [2021-11-05 17:48:49,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 17:49:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:49:47,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-05 17:49:47,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:49:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-05 17:49:48,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 17:49:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 17:49:48,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931155532] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 17:49:48,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 17:49:48,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 7 [2021-11-05 17:49:48,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010230088] [2021-11-05 17:49:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:49:48,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:49:48,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:49:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:49:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:49:48,506 INFO L87 Difference]: Start difference. First operand 54483 states and 76973 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-11-05 17:49:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:49:49,394 INFO L93 Difference]: Finished difference Result 108932 states and 153932 transitions. [2021-11-05 17:49:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:49:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 170 [2021-11-05 17:49:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:49:49,509 INFO L225 Difference]: With dead ends: 108932 [2021-11-05 17:49:49,509 INFO L226 Difference]: Without dead ends: 54505 [2021-11-05 17:49:49,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 50.12ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:49:49,607 INFO L933 BasicCegarLoop]: 37679 mSDtfsCounter, 0 mSDsluCounter, 37641 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75320 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.44ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.55ms IncrementalHoareTripleChecker+Time [2021-11-05 17:49:49,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75320 Invalid, 86 Unknown, 0 Unchecked, 36.44ms Time], IncrementalHoareTripleChecker [29 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 97.55ms Time] [2021-11-05 17:49:49,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54505 states. [2021-11-05 17:49:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54505 to 54505. [2021-11-05 17:49:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54505 states, 54454 states have (on average 1.4127153193521138) internal successors, (76928), 54460 states have internal predecessors, (76928), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:49:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54505 states to 54505 states and 76995 transitions. [2021-11-05 17:49:50,853 INFO L78 Accepts]: Start accepts. Automaton has 54505 states and 76995 transitions. Word has length 170 [2021-11-05 17:49:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:49:50,854 INFO L470 AbstractCegarLoop]: Abstraction has 54505 states and 76995 transitions. [2021-11-05 17:49:50,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-11-05 17:49:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 54505 states and 76995 transitions. [2021-11-05 17:49:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-05 17:49:50,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:49:50,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:49:50,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 17:49:51,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-05 17:49:51,100 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:49:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:49:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1623452645, now seen corresponding path program 1 times [2021-11-05 17:49:51,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:49:51,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100385050] [2021-11-05 17:49:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:49:51,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:49:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:49:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-05 17:49:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:49:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 17:49:51,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:49:51,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100385050] [2021-11-05 17:49:51,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100385050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:49:51,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776455616] [2021-11-05 17:49:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:49:51,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:49:51,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:49:51,627 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) [2021-11-05 17:49:51,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 17:50:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:50:34,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 17:50:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:50:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 17:50:34,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 17:50:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 17:50:35,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776455616] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 17:50:35,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 17:50:35,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-05 17:50:35,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119580936] [2021-11-05 17:50:35,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 17:50:35,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 17:50:35,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:50:35,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 17:50:35,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 17:50:35,009 INFO L87 Difference]: Start difference. First operand 54505 states and 76995 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 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) [2021-11-05 17:50:37,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:51:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:51:09,026 INFO L93 Difference]: Finished difference Result 109115 states and 154165 transitions. [2021-11-05 17:51:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 17:51:09,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 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 172 [2021-11-05 17:51:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:51:09,147 INFO L225 Difference]: With dead ends: 109115 [2021-11-05 17:51:09,147 INFO L226 Difference]: Without dead ends: 54663 [2021-11-05 17:51:09,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 104.50ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-05 17:51:09,238 INFO L933 BasicCegarLoop]: 37660 mSDtfsCounter, 23056 mSDsluCounter, 72903 mSDsCounter, 0 mSdLazyCounter, 17373 mSolverCounterSat, 154 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28340.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23061 SdHoareTripleChecker+Valid, 110563 SdHoareTripleChecker+Invalid, 17528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 209.74ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 17373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32102.63ms IncrementalHoareTripleChecker+Time [2021-11-05 17:51:09,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23061 Valid, 110563 Invalid, 17528 Unknown, 0 Unchecked, 209.74ms Time], IncrementalHoareTripleChecker [154 Valid, 17373 Invalid, 1 Unknown, 0 Unchecked, 32102.63ms Time] [2021-11-05 17:51:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54663 states. [2021-11-05 17:51:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54663 to 54548. [2021-11-05 17:51:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54548 states, 54497 states have (on average 1.4123896728260272) internal successors, (76971), 54503 states have internal predecessors, (76971), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:51:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54548 states to 54548 states and 77038 transitions. [2021-11-05 17:51:10,465 INFO L78 Accepts]: Start accepts. Automaton has 54548 states and 77038 transitions. Word has length 172 [2021-11-05 17:51:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:51:10,466 INFO L470 AbstractCegarLoop]: Abstraction has 54548 states and 77038 transitions. [2021-11-05 17:51:10,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 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) [2021-11-05 17:51:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 54548 states and 77038 transitions. [2021-11-05 17:51:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-05 17:51:10,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:51:10,493 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:51:10,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 17:51:10,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-05 17:51:10,707 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:51:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:51:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1139626066, now seen corresponding path program 2 times [2021-11-05 17:51:10,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:51:10,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125365579] [2021-11-05 17:51:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:51:10,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:51:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:51:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-05 17:51:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:51:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-05 17:51:11,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:51:11,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125365579] [2021-11-05 17:51:11,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125365579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:51:11,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604702974] [2021-11-05 17:51:11,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 17:51:11,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:51:11,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:51:11,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:51:11,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 17:51:58,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 17:51:58,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 17:51:58,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-05 17:51:58,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:51:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-05 17:51:59,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:51:59,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604702974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:51:59,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:51:59,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2021-11-05 17:51:59,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057420515] [2021-11-05 17:51:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:51:59,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 17:51:59,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:51:59,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 17:51:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-05 17:51:59,469 INFO L87 Difference]: Start difference. First operand 54548 states and 77038 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 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) [2021-11-05 17:52:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:52:01,754 INFO L93 Difference]: Finished difference Result 109254 states and 154355 transitions. [2021-11-05 17:52:01,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 17:52:01,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 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) Word has length 195 [2021-11-05 17:52:01,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:52:01,857 INFO L225 Difference]: With dead ends: 109254 [2021-11-05 17:52:01,858 INFO L226 Difference]: Without dead ends: 54818 [2021-11-05 17:52:01,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 680.85ms TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-11-05 17:52:01,940 INFO L933 BasicCegarLoop]: 37795 mSDtfsCounter, 1020 mSDsluCounter, 263342 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 281.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 301137 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 132.68ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 326.60ms IncrementalHoareTripleChecker+Time [2021-11-05 17:52:01,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 301137 Invalid, 255 Unknown, 0 Unchecked, 132.68ms Time], IncrementalHoareTripleChecker [38 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 326.60ms Time] [2021-11-05 17:52:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54818 states. [2021-11-05 17:52:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54818 to 54548. [2021-11-05 17:52:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54548 states, 54497 states have (on average 1.4123529735581775) internal successors, (76969), 54503 states have internal predecessors, (76969), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:52:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54548 states to 54548 states and 77036 transitions. [2021-11-05 17:52:03,167 INFO L78 Accepts]: Start accepts. Automaton has 54548 states and 77036 transitions. Word has length 195 [2021-11-05 17:52:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:52:03,167 INFO L470 AbstractCegarLoop]: Abstraction has 54548 states and 77036 transitions. [2021-11-05 17:52:03,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 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) [2021-11-05 17:52:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 54548 states and 77036 transitions. [2021-11-05 17:52:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-05 17:52:03,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:52:03,396 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:52:03,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-05 17:52:03,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:52:03,620 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:52:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:52:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1390247283, now seen corresponding path program 1 times [2021-11-05 17:52:03,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:52:03,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772713872] [2021-11-05 17:52:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:52:03,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:52:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:52:04,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-05 17:52:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:52:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-05 17:52:04,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:52:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772713872] [2021-11-05 17:52:04,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772713872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:52:04,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:52:04,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 17:52:04,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641083794] [2021-11-05 17:52:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:52:04,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 17:52:04,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:52:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 17:52:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 17:52:04,026 INFO L87 Difference]: Start difference. First operand 54548 states and 77036 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 6 states have internal predecessors, (178), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:52:06,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:52:18,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:52:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:52:34,191 INFO L93 Difference]: Finished difference Result 109291 states and 154376 transitions. [2021-11-05 17:52:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 17:52:34,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 6 states have internal predecessors, (178), 2 states have call successors, (4), 3 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 208 [2021-11-05 17:52:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:52:34,301 INFO L225 Difference]: With dead ends: 109291 [2021-11-05 17:52:34,302 INFO L226 Difference]: Without dead ends: 54855 [2021-11-05 17:52:34,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.12ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-05 17:52:34,392 INFO L933 BasicCegarLoop]: 37724 mSDtfsCounter, 252 mSDsluCounter, 171452 mSDsCounter, 0 mSdLazyCounter, 17393 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24993.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 209176 SdHoareTripleChecker+Invalid, 17419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 216.84ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 17393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28424.46ms IncrementalHoareTripleChecker+Time [2021-11-05 17:52:34,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 209176 Invalid, 17419 Unknown, 0 Unchecked, 216.84ms Time], IncrementalHoareTripleChecker [25 Valid, 17393 Invalid, 1 Unknown, 0 Unchecked, 28424.46ms Time] [2021-11-05 17:52:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54855 states. [2021-11-05 17:52:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54855 to 54556. [2021-11-05 17:52:35,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54556 states, 54505 states have (on average 1.4122924502339236) internal successors, (76977), 54511 states have internal predecessors, (76977), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:52:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54556 states to 54556 states and 77044 transitions. [2021-11-05 17:52:35,779 INFO L78 Accepts]: Start accepts. Automaton has 54556 states and 77044 transitions. Word has length 208 [2021-11-05 17:52:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:52:35,779 INFO L470 AbstractCegarLoop]: Abstraction has 54556 states and 77044 transitions. [2021-11-05 17:52:35,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 6 states have internal predecessors, (178), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:52:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 54556 states and 77044 transitions. [2021-11-05 17:52:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-05 17:52:35,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:52:35,818 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:52:35,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 17:52:35,818 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:52:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:52:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 281986117, now seen corresponding path program 1 times [2021-11-05 17:52:35,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:52:35,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051068594] [2021-11-05 17:52:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:52:35,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:52:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:52:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-05 17:52:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:52:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-05 17:52:36,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:52:36,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051068594] [2021-11-05 17:52:36,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051068594] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:52:36,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141084574] [2021-11-05 17:52:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:52:36,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:52:36,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:52:36,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:52:37,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 17:53:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:53:05,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3689 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-05 17:53:05,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:53:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-05 17:53:05,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 17:53:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-05 17:53:06,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141084574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 17:53:06,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 17:53:06,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 13 [2021-11-05 17:53:06,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674653362] [2021-11-05 17:53:06,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 17:53:06,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 17:53:06,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:53:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 17:53:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-05 17:53:06,063 INFO L87 Difference]: Start difference. First operand 54556 states and 77044 transitions. Second operand has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 12 states have internal predecessors, (201), 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) [2021-11-05 17:53:08,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 17:53:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:53:33,345 INFO L93 Difference]: Finished difference Result 109194 states and 154224 transitions. [2021-11-05 17:53:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 17:53:33,353 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 12 states have internal predecessors, (201), 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 214 [2021-11-05 17:53:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:53:33,461 INFO L225 Difference]: With dead ends: 109194 [2021-11-05 17:53:33,461 INFO L226 Difference]: Without dead ends: 54699 [2021-11-05 17:53:33,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 421 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 233.62ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-05 17:53:33,568 INFO L933 BasicCegarLoop]: 37660 mSDtfsCounter, 123 mSDsluCounter, 171090 mSDsCounter, 0 mSdLazyCounter, 17667 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22468.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 208750 SdHoareTripleChecker+Invalid, 17838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 199.07ms SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 17667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25496.85ms IncrementalHoareTripleChecker+Time [2021-11-05 17:53:33,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 208750 Invalid, 17838 Unknown, 0 Unchecked, 199.07ms Time], IncrementalHoareTripleChecker [170 Valid, 17667 Invalid, 1 Unknown, 0 Unchecked, 25496.85ms Time] [2021-11-05 17:53:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54699 states. [2021-11-05 17:53:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54699 to 54584. [2021-11-05 17:53:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54584 states, 54533 states have (on average 1.4120807584398438) internal successors, (77005), 54539 states have internal predecessors, (77005), 30 states have call successors, (30), 16 states have call predecessors, (30), 17 states have return successors, (37), 30 states have call predecessors, (37), 30 states have call successors, (37) [2021-11-05 17:53:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54584 states to 54584 states and 77072 transitions. [2021-11-05 17:53:34,890 INFO L78 Accepts]: Start accepts. Automaton has 54584 states and 77072 transitions. Word has length 214 [2021-11-05 17:53:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:53:34,891 INFO L470 AbstractCegarLoop]: Abstraction has 54584 states and 77072 transitions. [2021-11-05 17:53:34,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 12 states have internal predecessors, (201), 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) [2021-11-05 17:53:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 54584 states and 77072 transitions. [2021-11-05 17:53:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-05 17:53:34,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:53:34,923 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:53:34,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 17:53:35,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:53:35,142 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION === [free_priority_groupErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr0ASSERT_VIOLATIONERROR_FUNCTION, parse_path_selectorErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 17:53:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:53:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash 492511941, now seen corresponding path program 2 times [2021-11-05 17:53:35,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:53:35,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181508870] [2021-11-05 17:53:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:53:35,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:53:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:53:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-05 17:53:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:53:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-05 17:53:35,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:53:35,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181508870] [2021-11-05 17:53:35,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181508870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:53:35,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047375861] [2021-11-05 17:53:35,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 17:53:35,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:53:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:53:35,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:53:35,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15