./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 03:10:10,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:10:10,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:10:10,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:10:10,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:10:10,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:10:10,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:10:10,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:10:10,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:10:10,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:10:10,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:10:10,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:10:10,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:10:10,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:10:10,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:10:10,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:10:10,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:10:10,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:10:10,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:10:10,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:10:10,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:10:10,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:10:10,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:10:10,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:10:10,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:10:10,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:10:10,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:10:10,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:10:10,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:10:10,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:10:10,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:10:10,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:10:10,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:10:10,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:10:10,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:10:10,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:10:10,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:10:10,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:10:10,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:10:10,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:10:10,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:10:10,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:10:10,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:10:10,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:10:10,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:10:10,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:10:10,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:10:10,507 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:10:10,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:10:10,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:10:10,508 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:10:10,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:10:10,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:10:10,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:10:10,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:10:10,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:10:10,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:10:10,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:10:10,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:10:10,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:10:10,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:10:10,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:10:10,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:10:10,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:10:10,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:10:10,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:10:10,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:10:10,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:10:10,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:10:10,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:10:10,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:10:10,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:10:10,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:10:10,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2021-12-18 03:10:10,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:10:10,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:10:10,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:10:10,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:10:10,689 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:10:10,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-12-18 03:10:10,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0bdb008/c33800725af0479ba1a36c994181e6f2/FLAG6c8e87eb4 [2021-12-18 03:10:11,321 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:10:11,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-12-18 03:10:11,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0bdb008/c33800725af0479ba1a36c994181e6f2/FLAG6c8e87eb4 [2021-12-18 03:10:11,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa0bdb008/c33800725af0479ba1a36c994181e6f2 [2021-12-18 03:10:11,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:10:11,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:10:11,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:10:11,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:10:11,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:10:11,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:10:11" (1/1) ... [2021-12-18 03:10:11,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244df90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:11, skipping insertion in model container [2021-12-18 03:10:11,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:10:11" (1/1) ... [2021-12-18 03:10:11,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:10:11,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:10:14,134 WARN L230 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2021-12-18 03:10:14,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:10:14,376 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:10:14,681 WARN L230 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2021-12-18 03:10:14,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:10:14,874 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:10:14,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14 WrapperNode [2021-12-18 03:10:14,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:10:14,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:10:14,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:10:14,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:10:14,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,287 INFO L137 Inliner]: procedures = 511, calls = 3849, calls flagged for inlining = 265, calls inlined = 264, statements flattened = 9561 [2021-12-18 03:10:15,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:10:15,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:10:15,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:10:15,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:10:15,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:10:15,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:10:15,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:10:15,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:10:15,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (1/1) ... [2021-12-18 03:10:15,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:10:15,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:10:15,593 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) [2021-12-18 03:10:15,632 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 [2021-12-18 03:10:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2021-12-18 03:10:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2021-12-18 03:10:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:10:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:10:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2021-12-18 03:10:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2021-12-18 03:10:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2021-12-18 03:10:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2021-12-18 03:10:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2021-12-18 03:10:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2021-12-18 03:10:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2021-12-18 03:10:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2021-12-18 03:10:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2021-12-18 03:10:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2021-12-18 03:10:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2021-12-18 03:10:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2021-12-18 03:10:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-18 03:10:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-18 03:10:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2021-12-18 03:10:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2021-12-18 03:10:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2021-12-18 03:10:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2021-12-18 03:10:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:10:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure moutdwm [2021-12-18 03:10:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure moutdwm [2021-12-18 03:10:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2021-12-18 03:10:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2021-12-18 03:10:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2021-12-18 03:10:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2021-12-18 03:10:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2021-12-18 03:10:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2021-12-18 03:10:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2021-12-18 03:10:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2021-12-18 03:10:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2021-12-18 03:10:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2021-12-18 03:10:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2021-12-18 03:10:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2021-12-18 03:10:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 03:10:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2021-12-18 03:10:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2021-12-18 03:10:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2021-12-18 03:10:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2021-12-18 03:10:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 03:10:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2021-12-18 03:10:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2021-12-18 03:10:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2021-12-18 03:10:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2021-12-18 03:10:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:10:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2021-12-18 03:10:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2021-12-18 03:10:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-18 03:10:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-18 03:10:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure mindwm [2021-12-18 03:10:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure mindwm [2021-12-18 03:10:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2021-12-18 03:10:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2021-12-18 03:10:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-18 03:10:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-18 03:10:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_create_handle [2021-12-18 03:10:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_create_handle [2021-12-18 03:10:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:10:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:10:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2021-12-18 03:10:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2021-12-18 03:10:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 03:10:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 03:10:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2021-12-18 03:10:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2021-12-18 03:10:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:10:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:10:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:10:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2021-12-18 03:10:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2021-12-18 03:10:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2021-12-18 03:10:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2021-12-18 03:10:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2021-12-18 03:10:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2021-12-18 03:10:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2021-12-18 03:10:15,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2021-12-18 03:10:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2021-12-18 03:10:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2021-12-18 03:10:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2021-12-18 03:10:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2021-12-18 03:10:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-18 03:10:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-18 03:10:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:10:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:10:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-18 03:10:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-18 03:10:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 03:10:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 03:10:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2021-12-18 03:10:15,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2021-12-18 03:10:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2021-12-18 03:10:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2021-12-18 03:10:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2021-12-18 03:10:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2021-12-18 03:10:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2021-12-18 03:10:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2021-12-18 03:10:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2021-12-18 03:10:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2021-12-18 03:10:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 03:10:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 03:10:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:10:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:10:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2021-12-18 03:10:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2021-12-18 03:10:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2021-12-18 03:10:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2021-12-18 03:10:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2021-12-18 03:10:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2021-12-18 03:10:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 03:10:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 03:10:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-18 03:10:15,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-18 03:10:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:10:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2021-12-18 03:10:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-12-18 03:10:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2021-12-18 03:10:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2021-12-18 03:10:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:10:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2021-12-18 03:10:15,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2021-12-18 03:10:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2021-12-18 03:10:15,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2021-12-18 03:10:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:10:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2021-12-18 03:10:15,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2021-12-18 03:10:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 03:10:15,669 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 03:10:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2021-12-18 03:10:15,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2021-12-18 03:10:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2021-12-18 03:10:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2021-12-18 03:10:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2021-12-18 03:10:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2021-12-18 03:10:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2021-12-18 03:10:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2021-12-18 03:10:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2021-12-18 03:10:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2021-12-18 03:10:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2021-12-18 03:10:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2021-12-18 03:10:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2021-12-18 03:10:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2021-12-18 03:10:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2021-12-18 03:10:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2021-12-18 03:10:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2021-12-18 03:10:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2021-12-18 03:10:15,671 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2021-12-18 03:10:15,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2021-12-18 03:10:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2021-12-18 03:10:15,672 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2021-12-18 03:10:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2021-12-18 03:10:15,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2021-12-18 03:10:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2021-12-18 03:10:15,672 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2021-12-18 03:10:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 03:10:15,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 03:10:15,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:10:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2021-12-18 03:10:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2021-12-18 03:10:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2021-12-18 03:10:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2021-12-18 03:10:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 03:10:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 03:10:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fasync [2021-12-18 03:10:15,673 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fasync [2021-12-18 03:10:15,673 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2021-12-18 03:10:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2021-12-18 03:10:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2021-12-18 03:10:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2021-12-18 03:10:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2021-12-18 03:10:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2021-12-18 03:10:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2021-12-18 03:10:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2021-12-18 03:10:15,674 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2021-12-18 03:10:15,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2021-12-18 03:10:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2021-12-18 03:10:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2021-12-18 03:10:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2021-12-18 03:10:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2021-12-18 03:10:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2021-12-18 03:10:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2021-12-18 03:10:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_scan2 [2021-12-18 03:10:15,675 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_scan2 [2021-12-18 03:10:15,675 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-18 03:10:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-18 03:10:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2021-12-18 03:10:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2021-12-18 03:10:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2021-12-18 03:10:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2021-12-18 03:10:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2021-12-18 03:10:15,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2021-12-18 03:10:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:10:16,531 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:10:16,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:10:24,303 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel#1: main_#t~ret94#1 := ast_gem_init_object_#res#1;assume { :end_inline_ast_gem_init_object } true;assume -2147483648 <= main_#t~ret94#1 && main_#t~ret94#1 <= 2147483647;havoc main_#t~ret94#1;~ldv_state_variable_13~0 := 1; [2021-12-18 03:10:24,378 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:10:24,391 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:10:24,392 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 03:10:24,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:10:24 BoogieIcfgContainer [2021-12-18 03:10:24,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:10:24,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:10:24,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:10:24,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:10:24,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:10:11" (1/3) ... [2021-12-18 03:10:24,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a08fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:10:24, skipping insertion in model container [2021-12-18 03:10:24,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:10:14" (2/3) ... [2021-12-18 03:10:24,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a08fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:10:24, skipping insertion in model container [2021-12-18 03:10:24,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:10:24" (3/3) ... [2021-12-18 03:10:24,401 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-12-18 03:10:24,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:10:24,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:10:24,441 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:10:24,445 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 [2021-12-18 03:10:24,446 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:10:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 2566 states, 1829 states have (on average 1.437944231820667) internal successors, (2630), 1887 states have internal predecessors, (2630), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) [2021-12-18 03:10:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 03:10:24,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:24,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:24,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash 337264067, now seen corresponding path program 1 times [2021-12-18 03:10:24,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296192727] [2021-12-18 03:10:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:24,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:25,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296192727] [2021-12-18 03:10:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296192727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:25,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:25,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:25,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992691914] [2021-12-18 03:10:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:25,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:25,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:25,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:25,053 INFO L87 Difference]: Start difference. First operand has 2566 states, 1829 states have (on average 1.437944231820667) internal successors, (2630), 1887 states have internal predecessors, (2630), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:25,387 INFO L93 Difference]: Finished difference Result 7661 states and 11847 transitions. [2021-12-18 03:10:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:25,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-18 03:10:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:25,437 INFO L225 Difference]: With dead ends: 7661 [2021-12-18 03:10:25,438 INFO L226 Difference]: Without dead ends: 5092 [2021-12-18 03:10:25,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:25,462 INFO L933 BasicCegarLoop]: 4561 mSDtfsCounter, 3866 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3866 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:25,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3866 Valid, 8451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2021-12-18 03:10:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 5086. [2021-12-18 03:10:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3628 states have (on average 1.4355016538037486) internal successors, (5208), 3730 states have internal predecessors, (5208), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2021-12-18 03:10:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 7763 transitions. [2021-12-18 03:10:25,851 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 7763 transitions. Word has length 18 [2021-12-18 03:10:25,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:25,852 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 7763 transitions. [2021-12-18 03:10:25,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 7763 transitions. [2021-12-18 03:10:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 03:10:25,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:25,860 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] [2021-12-18 03:10:25,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:10:25,861 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:25,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash -427214803, now seen corresponding path program 1 times [2021-12-18 03:10:25,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:25,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679777773] [2021-12-18 03:10:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:25,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:26,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:26,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679777773] [2021-12-18 03:10:26,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679777773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:26,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:26,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:26,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924663334] [2021-12-18 03:10:26,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:26,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:26,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:26,108 INFO L87 Difference]: Start difference. First operand 5086 states and 7763 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:26,404 INFO L93 Difference]: Finished difference Result 14683 states and 22435 transitions. [2021-12-18 03:10:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:26,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-18 03:10:26,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:26,454 INFO L225 Difference]: With dead ends: 14683 [2021-12-18 03:10:26,454 INFO L226 Difference]: Without dead ends: 9600 [2021-12-18 03:10:26,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:26,484 INFO L933 BasicCegarLoop]: 4696 mSDtfsCounter, 3468 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:26,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3468 Valid, 8574 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2021-12-18 03:10:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 9577. [2021-12-18 03:10:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9577 states, 6793 states have (on average 1.4382452524657736) internal successors, (9770), 6985 states have internal predecessors, (9770), 2443 states have call successors, (2443), 341 states have call predecessors, (2443), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-18 03:10:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 14645 transitions. [2021-12-18 03:10:27,175 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 14645 transitions. Word has length 23 [2021-12-18 03:10:27,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:27,175 INFO L470 AbstractCegarLoop]: Abstraction has 9577 states and 14645 transitions. [2021-12-18 03:10:27,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 14645 transitions. [2021-12-18 03:10:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 03:10:27,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:27,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:27,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 03:10:27,178 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:27,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:27,179 INFO L85 PathProgramCache]: Analyzing trace with hash -541647884, now seen corresponding path program 1 times [2021-12-18 03:10:27,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:27,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567124799] [2021-12-18 03:10:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:27,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:27,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567124799] [2021-12-18 03:10:27,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567124799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:27,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:27,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:10:27,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680950619] [2021-12-18 03:10:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:27,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:10:27,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:10:27,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:10:27,353 INFO L87 Difference]: Start difference. First operand 9577 states and 14645 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:27,627 INFO L93 Difference]: Finished difference Result 19174 states and 29319 transitions. [2021-12-18 03:10:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:10:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-18 03:10:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:27,675 INFO L225 Difference]: With dead ends: 19174 [2021-12-18 03:10:27,676 INFO L226 Difference]: Without dead ends: 9600 [2021-12-18 03:10:27,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:10:27,713 INFO L933 BasicCegarLoop]: 3900 mSDtfsCounter, 34 mSDsluCounter, 7795 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 11695 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:27,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 11695 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:27,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2021-12-18 03:10:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 9580. [2021-12-18 03:10:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 6796 states have (on average 1.4380517951736316) internal successors, (9773), 6988 states have internal predecessors, (9773), 2443 states have call successors, (2443), 341 states have call predecessors, (2443), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-18 03:10:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 14648 transitions. [2021-12-18 03:10:28,193 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 14648 transitions. Word has length 22 [2021-12-18 03:10:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:28,193 INFO L470 AbstractCegarLoop]: Abstraction has 9580 states and 14648 transitions. [2021-12-18 03:10:28,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 14648 transitions. [2021-12-18 03:10:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 03:10:28,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:28,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:28,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 03:10:28,196 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash -484389582, now seen corresponding path program 1 times [2021-12-18 03:10:28,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:28,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764338257] [2021-12-18 03:10:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:28,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:28,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:28,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764338257] [2021-12-18 03:10:28,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764338257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:28,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:28,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:28,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923189163] [2021-12-18 03:10:28,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:28,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:28,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:28,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:28,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:28,424 INFO L87 Difference]: Start difference. First operand 9580 states and 14648 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:28,604 INFO L93 Difference]: Finished difference Result 9582 states and 14649 transitions. [2021-12-18 03:10:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:28,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-18 03:10:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:28,645 INFO L225 Difference]: With dead ends: 9582 [2021-12-18 03:10:28,645 INFO L226 Difference]: Without dead ends: 9579 [2021-12-18 03:10:28,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:28,653 INFO L933 BasicCegarLoop]: 3900 mSDtfsCounter, 3882 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3882 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:28,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3882 Valid, 3900 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9579 states. [2021-12-18 03:10:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9579 to 9579. [2021-12-18 03:10:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 6796 states have (on average 1.4379046497939965) internal successors, (9772), 6987 states have internal predecessors, (9772), 2442 states have call successors, (2442), 341 states have call predecessors, (2442), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-18 03:10:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 14646 transitions. [2021-12-18 03:10:29,018 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 14646 transitions. Word has length 22 [2021-12-18 03:10:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:29,018 INFO L470 AbstractCegarLoop]: Abstraction has 9579 states and 14646 transitions. [2021-12-18 03:10:29,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 14646 transitions. [2021-12-18 03:10:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-18 03:10:29,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:29,020 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] [2021-12-18 03:10:29,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 03:10:29,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:29,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2132288794, now seen corresponding path program 1 times [2021-12-18 03:10:29,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:29,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278996700] [2021-12-18 03:10:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:29,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:29,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:29,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278996700] [2021-12-18 03:10:29,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278996700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:29,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:29,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:29,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390140257] [2021-12-18 03:10:29,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:29,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:29,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:29,175 INFO L87 Difference]: Start difference. First operand 9579 states and 14646 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:29,342 INFO L93 Difference]: Finished difference Result 9581 states and 14647 transitions. [2021-12-18 03:10:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:29,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-18 03:10:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:29,372 INFO L225 Difference]: With dead ends: 9581 [2021-12-18 03:10:29,373 INFO L226 Difference]: Without dead ends: 9578 [2021-12-18 03:10:29,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:29,378 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3879 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:29,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3879 Valid, 3898 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:10:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2021-12-18 03:10:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9578. [2021-12-18 03:10:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9578 states, 6796 states have (on average 1.4377575044143613) internal successors, (9771), 6986 states have internal predecessors, (9771), 2441 states have call successors, (2441), 341 states have call predecessors, (2441), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-18 03:10:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 14644 transitions. [2021-12-18 03:10:29,776 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 14644 transitions. Word has length 23 [2021-12-18 03:10:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:29,776 INFO L470 AbstractCegarLoop]: Abstraction has 9578 states and 14644 transitions. [2021-12-18 03:10:29,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 14644 transitions. [2021-12-18 03:10:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-18 03:10:29,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:29,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:29,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 03:10:29,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1677551947, now seen corresponding path program 1 times [2021-12-18 03:10:29,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868076074] [2021-12-18 03:10:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:29,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:29,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:29,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868076074] [2021-12-18 03:10:29,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868076074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:29,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:29,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:29,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522692318] [2021-12-18 03:10:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:29,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:29,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:29,910 INFO L87 Difference]: Start difference. First operand 9578 states and 14644 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:30,080 INFO L93 Difference]: Finished difference Result 9580 states and 14645 transitions. [2021-12-18 03:10:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:30,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-18 03:10:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:30,112 INFO L225 Difference]: With dead ends: 9580 [2021-12-18 03:10:30,112 INFO L226 Difference]: Without dead ends: 9577 [2021-12-18 03:10:30,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:30,119 INFO L933 BasicCegarLoop]: 3896 mSDtfsCounter, 3876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:30,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3876 Valid, 3896 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:10:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2021-12-18 03:10:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 9577. [2021-12-18 03:10:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9577 states, 6796 states have (on average 1.4376103590347262) internal successors, (9770), 6985 states have internal predecessors, (9770), 2440 states have call successors, (2440), 341 states have call predecessors, (2440), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-18 03:10:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 14642 transitions. [2021-12-18 03:10:30,541 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 14642 transitions. Word has length 24 [2021-12-18 03:10:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:30,542 INFO L470 AbstractCegarLoop]: Abstraction has 9577 states and 14642 transitions. [2021-12-18 03:10:30,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 14642 transitions. [2021-12-18 03:10:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-18 03:10:30,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:30,544 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] [2021-12-18 03:10:30,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 03:10:30,544 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:30,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:30,545 INFO L85 PathProgramCache]: Analyzing trace with hash -465606711, now seen corresponding path program 1 times [2021-12-18 03:10:30,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:30,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741978923] [2021-12-18 03:10:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:30,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:30,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741978923] [2021-12-18 03:10:30,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741978923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:30,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:30,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:30,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346221117] [2021-12-18 03:10:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:30,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:30,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:30,697 INFO L87 Difference]: Start difference. First operand 9577 states and 14642 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:30,920 INFO L93 Difference]: Finished difference Result 9579 states and 14643 transitions. [2021-12-18 03:10:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-18 03:10:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:30,957 INFO L225 Difference]: With dead ends: 9579 [2021-12-18 03:10:30,957 INFO L226 Difference]: Without dead ends: 9576 [2021-12-18 03:10:30,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:30,967 INFO L933 BasicCegarLoop]: 3894 mSDtfsCounter, 3873 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3873 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:30,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3873 Valid, 3894 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2021-12-18 03:10:31,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 9576. [2021-12-18 03:10:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9576 states, 6796 states have (on average 1.4374632136550913) internal successors, (9769), 6984 states have internal predecessors, (9769), 2439 states have call successors, (2439), 341 states have call predecessors, (2439), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-18 03:10:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 14640 transitions. [2021-12-18 03:10:31,446 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 14640 transitions. Word has length 25 [2021-12-18 03:10:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:31,447 INFO L470 AbstractCegarLoop]: Abstraction has 9576 states and 14640 transitions. [2021-12-18 03:10:31,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 14640 transitions. [2021-12-18 03:10:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 03:10:31,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:31,451 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] [2021-12-18 03:10:31,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 03:10:31,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1488446885, now seen corresponding path program 1 times [2021-12-18 03:10:31,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:31,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058869726] [2021-12-18 03:10:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:31,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:31,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:31,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058869726] [2021-12-18 03:10:31,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058869726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:31,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:31,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:31,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526703816] [2021-12-18 03:10:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:31,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:31,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:31,617 INFO L87 Difference]: Start difference. First operand 9576 states and 14640 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:32,096 INFO L93 Difference]: Finished difference Result 28641 states and 43792 transitions. [2021-12-18 03:10:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:32,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-18 03:10:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:32,166 INFO L225 Difference]: With dead ends: 28641 [2021-12-18 03:10:32,166 INFO L226 Difference]: Without dead ends: 19068 [2021-12-18 03:10:32,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:32,202 INFO L933 BasicCegarLoop]: 5186 mSDtfsCounter, 3849 mSDsluCounter, 3877 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 9063 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:32,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3849 Valid, 9063 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19068 states. [2021-12-18 03:10:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19068 to 19046. [2021-12-18 03:10:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19046 states, 13510 states have (on average 1.4372316802368617) internal successors, (19417), 13880 states have internal predecessors, (19417), 4859 states have call successors, (4859), 677 states have call predecessors, (4859), 676 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2021-12-18 03:10:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19046 states to 19046 states and 29128 transitions. [2021-12-18 03:10:33,131 INFO L78 Accepts]: Start accepts. Automaton has 19046 states and 29128 transitions. Word has length 29 [2021-12-18 03:10:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:33,131 INFO L470 AbstractCegarLoop]: Abstraction has 19046 states and 29128 transitions. [2021-12-18 03:10:33,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19046 states and 29128 transitions. [2021-12-18 03:10:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 03:10:33,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:33,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:33,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 03:10:33,134 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1550005192, now seen corresponding path program 1 times [2021-12-18 03:10:33,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:33,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726583490] [2021-12-18 03:10:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:33,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:33,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726583490] [2021-12-18 03:10:33,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726583490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:33,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:33,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:33,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083308523] [2021-12-18 03:10:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:33,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:33,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:33,273 INFO L87 Difference]: Start difference. First operand 19046 states and 29128 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:33,607 INFO L93 Difference]: Finished difference Result 19074 states and 29146 transitions. [2021-12-18 03:10:33,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:33,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-18 03:10:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:33,676 INFO L225 Difference]: With dead ends: 19074 [2021-12-18 03:10:33,676 INFO L226 Difference]: Without dead ends: 19070 [2021-12-18 03:10:33,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:33,690 INFO L933 BasicCegarLoop]: 3889 mSDtfsCounter, 3858 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3858 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:33,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3858 Valid, 3898 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19070 states. [2021-12-18 03:10:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19070 to 19068. [2021-12-18 03:10:34,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19068 states, 13526 states have (on average 1.4360490906402483) internal successors, (19424), 13894 states have internal predecessors, (19424), 4857 states have call successors, (4857), 685 states have call predecessors, (4857), 684 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2021-12-18 03:10:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19068 states to 19068 states and 29133 transitions. [2021-12-18 03:10:34,486 INFO L78 Accepts]: Start accepts. Automaton has 19068 states and 29133 transitions. Word has length 26 [2021-12-18 03:10:34,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:34,487 INFO L470 AbstractCegarLoop]: Abstraction has 19068 states and 29133 transitions. [2021-12-18 03:10:34,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 19068 states and 29133 transitions. [2021-12-18 03:10:34,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 03:10:34,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:34,489 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] [2021-12-18 03:10:34,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 03:10:34,490 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash -806614868, now seen corresponding path program 1 times [2021-12-18 03:10:34,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:34,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578078929] [2021-12-18 03:10:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:34,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:34,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:34,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578078929] [2021-12-18 03:10:34,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578078929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:34,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:34,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:34,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324759445] [2021-12-18 03:10:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:34,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:34,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:34,722 INFO L87 Difference]: Start difference. First operand 19068 states and 29133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:35,335 INFO L93 Difference]: Finished difference Result 39355 states and 59716 transitions. [2021-12-18 03:10:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:35,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-18 03:10:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:35,435 INFO L225 Difference]: With dead ends: 39355 [2021-12-18 03:10:35,436 INFO L226 Difference]: Without dead ends: 20290 [2021-12-18 03:10:35,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:35,511 INFO L933 BasicCegarLoop]: 3957 mSDtfsCounter, 3744 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:35,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 4252 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 03:10:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20290 states. [2021-12-18 03:10:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20290 to 20227. [2021-12-18 03:10:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20227 states, 14274 states have (on average 1.417051982625753) internal successors, (20227), 14648 states have internal predecessors, (20227), 5044 states have call successors, (5044), 890 states have call predecessors, (5044), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2021-12-18 03:10:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20227 states to 20227 states and 30363 transitions. [2021-12-18 03:10:36,436 INFO L78 Accepts]: Start accepts. Automaton has 20227 states and 30363 transitions. Word has length 27 [2021-12-18 03:10:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:36,437 INFO L470 AbstractCegarLoop]: Abstraction has 20227 states and 30363 transitions. [2021-12-18 03:10:36,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 20227 states and 30363 transitions. [2021-12-18 03:10:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 03:10:36,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:36,439 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] [2021-12-18 03:10:36,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 03:10:36,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 763653563, now seen corresponding path program 1 times [2021-12-18 03:10:36,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:36,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240269079] [2021-12-18 03:10:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:36,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:10:36,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:36,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240269079] [2021-12-18 03:10:36,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240269079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:36,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:36,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:10:36,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311116053] [2021-12-18 03:10:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:36,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:10:36,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:10:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:36,565 INFO L87 Difference]: Start difference. First operand 20227 states and 30363 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:37,082 INFO L93 Difference]: Finished difference Result 20229 states and 30364 transitions. [2021-12-18 03:10:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:10:37,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-18 03:10:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:37,154 INFO L225 Difference]: With dead ends: 20229 [2021-12-18 03:10:37,155 INFO L226 Difference]: Without dead ends: 20213 [2021-12-18 03:10:37,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:10:37,165 INFO L933 BasicCegarLoop]: 3887 mSDtfsCounter, 3862 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3862 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:37,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3862 Valid, 3887 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:10:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20213 states. [2021-12-18 03:10:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20213 to 20213. [2021-12-18 03:10:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20213 states, 14261 states have (on average 1.4162400953649814) internal successors, (20197), 14634 states have internal predecessors, (20197), 5043 states have call successors, (5043), 890 states have call predecessors, (5043), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2021-12-18 03:10:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20213 states to 20213 states and 30332 transitions. [2021-12-18 03:10:37,925 INFO L78 Accepts]: Start accepts. Automaton has 20213 states and 30332 transitions. Word has length 28 [2021-12-18 03:10:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:37,925 INFO L470 AbstractCegarLoop]: Abstraction has 20213 states and 30332 transitions. [2021-12-18 03:10:37,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:10:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 20213 states and 30332 transitions. [2021-12-18 03:10:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-18 03:10:37,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:37,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:37,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 03:10:37,938 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash 929900714, now seen corresponding path program 1 times [2021-12-18 03:10:37,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:37,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167535166] [2021-12-18 03:10:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:37,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:10:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:10:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:38,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 03:10:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:38,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:10:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 03:10:38,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:38,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167535166] [2021-12-18 03:10:38,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167535166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:38,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:38,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 03:10:38,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705477428] [2021-12-18 03:10:38,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:38,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:10:38,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:38,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:10:38,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:10:38,168 INFO L87 Difference]: Start difference. First operand 20213 states and 30332 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 03:10:48,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:10:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:10:53,105 INFO L93 Difference]: Finished difference Result 22672 states and 33503 transitions. [2021-12-18 03:10:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:10:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2021-12-18 03:10:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:10:53,200 INFO L225 Difference]: With dead ends: 22672 [2021-12-18 03:10:53,201 INFO L226 Difference]: Without dead ends: 20736 [2021-12-18 03:10:53,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:10:53,223 INFO L933 BasicCegarLoop]: 3482 mSDtfsCounter, 2077 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 4741 mSolverCounterSat, 1678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 7231 SdHoareTripleChecker+Invalid, 6419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1678 IncrementalHoareTripleChecker+Valid, 4741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-12-18 03:10:53,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2466 Valid, 7231 Invalid, 6419 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1678 Valid, 4741 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2021-12-18 03:10:53,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20736 states. [2021-12-18 03:10:54,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20736 to 20089. [2021-12-18 03:10:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20089 states, 14187 states have (on average 1.417283428490872) internal successors, (20107), 14560 states have internal predecessors, (20107), 5023 states have call successors, (5023), 880 states have call predecessors, (5023), 878 states have return successors, (5020), 4860 states have call predecessors, (5020), 5020 states have call successors, (5020) [2021-12-18 03:10:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20089 states to 20089 states and 30150 transitions. [2021-12-18 03:10:54,169 INFO L78 Accepts]: Start accepts. Automaton has 20089 states and 30150 transitions. Word has length 64 [2021-12-18 03:10:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:10:54,170 INFO L470 AbstractCegarLoop]: Abstraction has 20089 states and 30150 transitions. [2021-12-18 03:10:54,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 03:10:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20089 states and 30150 transitions. [2021-12-18 03:10:54,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 03:10:54,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:10:54,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:10:54,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 03:10:54,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:10:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:10:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash -561141611, now seen corresponding path program 1 times [2021-12-18 03:10:54,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:10:54,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535634801] [2021-12-18 03:10:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:10:54,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:10:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:10:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:10:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:10:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:10:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 03:10:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:10:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 03:10:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 03:10:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:10:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-18 03:10:54,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:10:54,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535634801] [2021-12-18 03:10:54,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535634801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:10:54,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:10:54,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 03:10:54,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017517319] [2021-12-18 03:10:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:10:54,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:10:54,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:10:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:10:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:10:54,649 INFO L87 Difference]: Start difference. First operand 20089 states and 30150 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 03:11:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:11:16,717 INFO L93 Difference]: Finished difference Result 61252 states and 91911 transitions. [2021-12-18 03:11:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 03:11:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2021-12-18 03:11:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:11:16,885 INFO L225 Difference]: With dead ends: 61252 [2021-12-18 03:11:16,885 INFO L226 Difference]: Without dead ends: 41166 [2021-12-18 03:11:16,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 03:11:16,964 INFO L933 BasicCegarLoop]: 5055 mSDtfsCounter, 5412 mSDsluCounter, 5166 mSDsCounter, 0 mSdLazyCounter, 5955 mSolverCounterSat, 3633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5970 SdHoareTripleChecker+Valid, 10221 SdHoareTripleChecker+Invalid, 9588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3633 IncrementalHoareTripleChecker+Valid, 5955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:11:16,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5970 Valid, 10221 Invalid, 9588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3633 Valid, 5955 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2021-12-18 03:11:17,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41166 states. [2021-12-18 03:11:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41166 to 39927. [2021-12-18 03:11:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39927 states, 28219 states have (on average 1.4175201105638044) internal successors, (40001), 28964 states have internal predecessors, (40001), 9961 states have call successors, (9961), 1748 states have call predecessors, (9961), 1746 states have return successors, (9958), 9638 states have call predecessors, (9958), 9958 states have call successors, (9958) [2021-12-18 03:11:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39927 states to 39927 states and 59920 transitions. [2021-12-18 03:11:19,012 INFO L78 Accepts]: Start accepts. Automaton has 39927 states and 59920 transitions. Word has length 94 [2021-12-18 03:11:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:11:19,012 INFO L470 AbstractCegarLoop]: Abstraction has 39927 states and 59920 transitions. [2021-12-18 03:11:19,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 03:11:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 39927 states and 59920 transitions. [2021-12-18 03:11:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-18 03:11:19,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:11:19,069 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:11:19,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 03:11:19,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:11:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:11:19,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1093243527, now seen corresponding path program 1 times [2021-12-18 03:11:19,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:11:19,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468162202] [2021-12-18 03:11:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:11:19,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:11:19,144 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-18 03:11:19,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417739500] [2021-12-18 03:11:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:11:19,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:11:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:11:19,171 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) [2021-12-18 03:11:19,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 03:11:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:20,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 4852 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 03:11:20,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:11:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-18 03:11:20,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:11:20,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:11:20,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468162202] [2021-12-18 03:11:20,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-18 03:11:20,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417739500] [2021-12-18 03:11:20,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417739500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:11:20,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:11:20,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 03:11:20,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312727642] [2021-12-18 03:11:20,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:11:20,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:11:20,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:11:20,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:11:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:11:20,655 INFO L87 Difference]: Start difference. First operand 39927 states and 59920 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-18 03:11:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:11:22,175 INFO L93 Difference]: Finished difference Result 91636 states and 139046 transitions. [2021-12-18 03:11:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:11:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2021-12-18 03:11:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:11:22,512 INFO L225 Difference]: With dead ends: 91636 [2021-12-18 03:11:22,512 INFO L226 Difference]: Without dead ends: 51712 [2021-12-18 03:11:22,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:11:22,638 INFO L933 BasicCegarLoop]: 5166 mSDtfsCounter, 1149 mSDsluCounter, 14319 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 19485 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:11:22,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 19485 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:11:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51712 states. [2021-12-18 03:11:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51712 to 39959. [2021-12-18 03:11:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39959 states, 28243 states have (on average 1.4171653152993662) internal successors, (40025), 28988 states have internal predecessors, (40025), 9961 states have call successors, (9961), 1748 states have call predecessors, (9961), 1754 states have return successors, (9982), 9646 states have call predecessors, (9982), 9958 states have call successors, (9982) [2021-12-18 03:11:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39959 states to 39959 states and 59968 transitions. [2021-12-18 03:11:24,915 INFO L78 Accepts]: Start accepts. Automaton has 39959 states and 59968 transitions. Word has length 105 [2021-12-18 03:11:24,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:11:24,916 INFO L470 AbstractCegarLoop]: Abstraction has 39959 states and 59968 transitions. [2021-12-18 03:11:24,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-18 03:11:24,916 INFO L276 IsEmpty]: Start isEmpty. Operand 39959 states and 59968 transitions. [2021-12-18 03:11:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-18 03:11:24,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:11:24,965 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:11:25,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 03:11:25,191 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,SelfDestructingSolverStorable13 [2021-12-18 03:11:25,191 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:11:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:11:25,192 INFO L85 PathProgramCache]: Analyzing trace with hash -768950979, now seen corresponding path program 1 times [2021-12-18 03:11:25,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:11:25,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551405496] [2021-12-18 03:11:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:11:25,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:11:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 03:11:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 03:11:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:25,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:11:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:11:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 03:11:25,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:11:25,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551405496] [2021-12-18 03:11:25,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551405496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:11:25,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:11:25,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:11:25,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504640248] [2021-12-18 03:11:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:11:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:11:25,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:11:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:11:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:11:25,372 INFO L87 Difference]: Start difference. First operand 39959 states and 59968 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-18 03:11:27,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:11:32,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:11:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:11:39,648 INFO L93 Difference]: Finished difference Result 100094 states and 150221 transitions. [2021-12-18 03:11:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:11:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2021-12-18 03:11:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:11:39,885 INFO L225 Difference]: With dead ends: 100094 [2021-12-18 03:11:39,885 INFO L226 Difference]: Without dead ends: 60138 [2021-12-18 03:11:40,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:11:40,016 INFO L933 BasicCegarLoop]: 5232 mSDtfsCounter, 4986 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 2461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5606 SdHoareTripleChecker+Valid, 9283 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2461 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-12-18 03:11:40,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5606 Valid, 9283 Invalid, 5552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2461 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-12-18 03:11:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60138 states. [2021-12-18 03:11:42,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60138 to 59907. [2021-12-18 03:11:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59907 states, 42367 states have (on average 1.4169282696438266) internal successors, (60031), 43484 states have internal predecessors, (60031), 14911 states have call successors, (14911), 2618 states have call predecessors, (14911), 2628 states have return successors, (14944), 14440 states have call predecessors, (14944), 14908 states have call successors, (14944) [2021-12-18 03:11:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59907 states to 59907 states and 89886 transitions. [2021-12-18 03:11:43,048 INFO L78 Accepts]: Start accepts. Automaton has 59907 states and 89886 transitions. Word has length 98 [2021-12-18 03:11:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:11:43,049 INFO L470 AbstractCegarLoop]: Abstraction has 59907 states and 89886 transitions. [2021-12-18 03:11:43,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-18 03:11:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 59907 states and 89886 transitions. [2021-12-18 03:11:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-18 03:11:43,099 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:11:43,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:11:43,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 03:11:43,100 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:11:43,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:11:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash 111929214, now seen corresponding path program 1 times [2021-12-18 03:11:43,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:11:43,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859153591] [2021-12-18 03:11:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:11:43,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:11:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:43,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 03:11:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:11:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 03:11:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 03:11:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:11:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:11:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 03:11:43,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:11:43,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859153591] [2021-12-18 03:11:43,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859153591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:11:43,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:11:43,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 03:11:43,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386577641] [2021-12-18 03:11:43,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:11:43,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:11:43,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:11:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:11:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:11:43,483 INFO L87 Difference]: Start difference. First operand 59907 states and 89886 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-18 03:11:47,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:12:02,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:12:04,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:12:05,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:12:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:23,425 INFO L93 Difference]: Finished difference Result 117079 states and 176957 transitions. [2021-12-18 03:12:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 03:12:23,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2021-12-18 03:12:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:23,686 INFO L225 Difference]: With dead ends: 117079 [2021-12-18 03:12:23,687 INFO L226 Difference]: Without dead ends: 57175 [2021-12-18 03:12:23,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-18 03:12:23,863 INFO L933 BasicCegarLoop]: 3329 mSDtfsCounter, 1435 mSDsluCounter, 11231 mSDsCounter, 0 mSdLazyCounter, 9653 mSolverCounterSat, 659 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 14560 SdHoareTripleChecker+Invalid, 10313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 9653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:23,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1893 Valid, 14560 Invalid, 10313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [659 Valid, 9653 Invalid, 1 Unknown, 0 Unchecked, 38.0s Time] [2021-12-18 03:12:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57175 states. [2021-12-18 03:12:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57175 to 56951. [2021-12-18 03:12:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56951 states, 40709 states have (on average 1.4215284089513376) internal successors, (57869), 41489 states have internal predecessors, (57869), 14093 states have call successors, (14093), 2137 states have call predecessors, (14093), 2148 states have return successors, (14128), 13936 states have call predecessors, (14128), 14092 states have call successors, (14128) [2021-12-18 03:12:26,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56951 states to 56951 states and 86090 transitions. [2021-12-18 03:12:26,626 INFO L78 Accepts]: Start accepts. Automaton has 56951 states and 86090 transitions. Word has length 101 [2021-12-18 03:12:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:26,626 INFO L470 AbstractCegarLoop]: Abstraction has 56951 states and 86090 transitions. [2021-12-18 03:12:26,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-18 03:12:26,627 INFO L276 IsEmpty]: Start isEmpty. Operand 56951 states and 86090 transitions. [2021-12-18 03:12:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-18 03:12:26,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:26,713 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:26,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 03:12:26,713 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:26,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1363610848, now seen corresponding path program 1 times [2021-12-18 03:12:26,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:26,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683236020] [2021-12-18 03:12:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:26,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:12:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:12:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 03:12:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:12:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 03:12:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:26,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 03:12:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 03:12:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 03:12:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 03:12:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:12:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-12-18 03:12:27,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:27,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683236020] [2021-12-18 03:12:27,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683236020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:27,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:27,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:27,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683441092] [2021-12-18 03:12:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:27,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:27,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:27,133 INFO L87 Difference]: Start difference. First operand 56951 states and 86090 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:12:29,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 03:12:35,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:35,246 INFO L93 Difference]: Finished difference Result 149387 states and 223649 transitions. [2021-12-18 03:12:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:12:35,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 192 [2021-12-18 03:12:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:35,847 INFO L225 Difference]: With dead ends: 149387 [2021-12-18 03:12:35,847 INFO L226 Difference]: Without dead ends: 92439 [2021-12-18 03:12:36,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:36,038 INFO L933 BasicCegarLoop]: 4675 mSDtfsCounter, 2509 mSDsluCounter, 6101 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 1013 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 10776 SdHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1013 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:36,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2789 Valid, 10776 Invalid, 2453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1013 Valid, 1439 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-12-18 03:12:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92439 states. [2021-12-18 03:12:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92439 to 89631. [2021-12-18 03:12:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89631 states, 65321 states have (on average 1.4166500819032164) internal successors, (92537), 66401 states have internal predecessors, (92537), 20409 states have call successors, (20409), 3877 states have call predecessors, (20409), 3900 states have return successors, (20480), 20144 states have call predecessors, (20480), 20408 states have call successors, (20480) [2021-12-18 03:12:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89631 states to 89631 states and 133426 transitions. [2021-12-18 03:12:40,421 INFO L78 Accepts]: Start accepts. Automaton has 89631 states and 133426 transitions. Word has length 192 [2021-12-18 03:12:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:40,422 INFO L470 AbstractCegarLoop]: Abstraction has 89631 states and 133426 transitions. [2021-12-18 03:12:40,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:12:40,422 INFO L276 IsEmpty]: Start isEmpty. Operand 89631 states and 133426 transitions. [2021-12-18 03:12:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-18 03:12:40,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:40,629 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:40,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 03:12:40,630 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:40,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1624359698, now seen corresponding path program 1 times [2021-12-18 03:12:40,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:40,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883917606] [2021-12-18 03:12:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:40,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 03:12:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-18 03:12:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:12:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 03:12:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 03:12:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 03:12:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:12:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 03:12:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 03:12:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 03:12:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:41,282 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2021-12-18 03:12:41,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:41,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883917606] [2021-12-18 03:12:41,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883917606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:41,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:41,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:41,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798232016] [2021-12-18 03:12:41,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:41,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:41,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:41,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:41,285 INFO L87 Difference]: Start difference. First operand 89631 states and 133426 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:12:43,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-18 03:12:51,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:12:51,018 INFO L93 Difference]: Finished difference Result 216595 states and 321505 transitions. [2021-12-18 03:12:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:12:51,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 209 [2021-12-18 03:12:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:12:51,746 INFO L225 Difference]: With dead ends: 216595 [2021-12-18 03:12:51,747 INFO L226 Difference]: Without dead ends: 126967 [2021-12-18 03:12:52,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:12:52,020 INFO L933 BasicCegarLoop]: 5292 mSDtfsCounter, 2446 mSDsluCounter, 6518 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 946 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2725 SdHoareTripleChecker+Valid, 11810 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:12:52,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2725 Valid, 11810 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 1499 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-12-18 03:12:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126967 states. [2021-12-18 03:12:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126967 to 122815. [2021-12-18 03:12:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122815 states, 90545 states have (on average 1.4156165442597604) internal successors, (128177), 91913 states have internal predecessors, (128177), 26653 states have call successors, (26653), 5593 states have call predecessors, (26653), 5616 states have return successors, (26760), 26280 states have call predecessors, (26760), 26652 states have call successors, (26760) [2021-12-18 03:12:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122815 states to 122815 states and 181590 transitions. [2021-12-18 03:12:58,708 INFO L78 Accepts]: Start accepts. Automaton has 122815 states and 181590 transitions. Word has length 209 [2021-12-18 03:12:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:12:58,709 INFO L470 AbstractCegarLoop]: Abstraction has 122815 states and 181590 transitions. [2021-12-18 03:12:58,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 03:12:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 122815 states and 181590 transitions. [2021-12-18 03:12:59,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-18 03:12:59,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:12:59,070 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:12:59,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 03:12:59,070 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:12:59,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:12:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash -709894451, now seen corresponding path program 1 times [2021-12-18 03:12:59,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:12:59,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305714153] [2021-12-18 03:12:59,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:12:59,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:12:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 03:12:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 03:12:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 03:12:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 03:12:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 03:12:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 03:12:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-18 03:12:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:12:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 03:12:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-18 03:12:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:12:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 03:12:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-18 03:12:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:12:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-12-18 03:12:59,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:12:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305714153] [2021-12-18 03:12:59,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305714153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:12:59,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:12:59,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:12:59,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336233094] [2021-12-18 03:12:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:12:59,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:12:59,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:12:59,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:12:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:12:59,807 INFO L87 Difference]: Start difference. First operand 122815 states and 181590 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)