./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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--media--firewire--firedtv.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 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:49:14,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:49:14,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:49:14,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:49:14,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:49:14,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:49:14,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:49:14,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:49:14,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:49:14,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:49:14,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:49:14,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:49:14,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:49:14,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:49:14,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:49:14,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:49:14,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:49:14,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:49:14,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:49:14,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:49:14,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:49:14,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:49:14,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:49:14,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:49:14,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:49:14,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:49:14,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:49:14,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:49:14,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:49:14,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:49:14,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:49:14,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:49:14,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:49:14,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:49:14,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:49:14,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:49:14,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:49:14,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:49:14,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:49:14,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:49:14,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:49:14,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:49:14,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:49:14,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:49:14,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:49:14,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:49:14,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:49:14,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:49:14,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:49:14,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:49:14,648 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:49:14,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:49:14,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:49:14,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:49:14,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:49:14,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:49:14,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:49:14,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:49:14,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:49:14,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:49:14,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:49:14,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:49:14,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:49:14,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:49:14,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:49:14,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:49:14,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:49:14,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:49:14,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:49:14,652 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:49:14,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:49:14,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:49:14,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2021-12-28 03:49:14,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:49:14,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:49:14,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:49:14,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:49:14,905 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:49:14,906 INFO L432 ainManager$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--media--firewire--firedtv.ko-main.cil.out.i [2021-12-28 03:49:14,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f2cedaf/c0cc892968dc42469555fc5cdcff76ec/FLAGda6ae1445 [2021-12-28 03:49:15,610 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:49:15,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-28 03:49:15,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f2cedaf/c0cc892968dc42469555fc5cdcff76ec/FLAGda6ae1445 [2021-12-28 03:49:15,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f2cedaf/c0cc892968dc42469555fc5cdcff76ec [2021-12-28 03:49:15,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:49:15,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:49:15,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:49:15,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:49:15,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:49:15,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:49:15" (1/1) ... [2021-12-28 03:49:15,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562b2c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:15, skipping insertion in model container [2021-12-28 03:49:15,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:49:15" (1/1) ... [2021-12-28 03:49:15,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:49:15,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:49:17,246 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--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2021-12-28 03:49:17,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:49:17,390 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:49:17,729 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--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2021-12-28 03:49:17,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:49:17,820 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:49:17,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17 WrapperNode [2021-12-28 03:49:17,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:49:17,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:49:17,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:49:17,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:49:17,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:17,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,055 INFO L137 Inliner]: procedures = 341, calls = 1845, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4880 [2021-12-28 03:49:18,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:49:18,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:49:18,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:49:18,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:49:18,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:49:18,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:49:18,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:49:18,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:49:18,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (1/1) ... [2021-12-28 03:49:18,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:49:18,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:49:18,292 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) [2021-12-28 03:49:18,311 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 [2021-12-28 03:49:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2021-12-28 03:49:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2021-12-28 03:49:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-28 03:49:18,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-28 03:49:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2021-12-28 03:49:18,324 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2021-12-28 03:49:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2021-12-28 03:49:18,324 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2021-12-28 03:49:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2021-12-28 03:49:18,324 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2021-12-28 03:49:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-28 03:49:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-28 03:49:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-28 03:49:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2021-12-28 03:49:18,325 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2021-12-28 03:49:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:49:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:49:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2021-12-28 03:49:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2021-12-28 03:49:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-28 03:49:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-28 03:49:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-28 03:49:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-28 03:49:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:49:18,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:49:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2021-12-28 03:49:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2021-12-28 03:49:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2021-12-28 03:49:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2021-12-28 03:49:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:49:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:49:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:49:18,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:49:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2021-12-28 03:49:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2021-12-28 03:49:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2021-12-28 03:49:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2021-12-28 03:49:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2021-12-28 03:49:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2021-12-28 03:49:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-28 03:49:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-28 03:49:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2021-12-28 03:49:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2021-12-28 03:49:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2021-12-28 03:49:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2021-12-28 03:49:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:49:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:49:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2021-12-28 03:49:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2021-12-28 03:49:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:49:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-28 03:49:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-28 03:49:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2021-12-28 03:49:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2021-12-28 03:49:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2021-12-28 03:49:18,331 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2021-12-28 03:49:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:49:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-28 03:49:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-28 03:49:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2021-12-28 03:49:18,332 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2021-12-28 03:49:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:49:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:49:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2021-12-28 03:49:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2021-12-28 03:49:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2021-12-28 03:49:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2021-12-28 03:49:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2021-12-28 03:49:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2021-12-28 03:49:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-28 03:49:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-28 03:49:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:49:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:49:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:49:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:49:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:49:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:49:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-28 03:49:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-28 03:49:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2021-12-28 03:49:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2021-12-28 03:49:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:49:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-28 03:49:18,335 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-28 03:49:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2021-12-28 03:49:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2021-12-28 03:49:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:49:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2021-12-28 03:49:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2021-12-28 03:49:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2021-12-28 03:49:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2021-12-28 03:49:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:49:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2021-12-28 03:49:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2021-12-28 03:49:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2021-12-28 03:49:18,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2021-12-28 03:49:18,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:49:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:49:18,338 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:49:18,338 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:49:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-28 03:49:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-28 03:49:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:49:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2021-12-28 03:49:18,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2021-12-28 03:49:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2021-12-28 03:49:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2021-12-28 03:49:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-28 03:49:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-28 03:49:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-28 03:49:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-28 03:49:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:49:18,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:49:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2021-12-28 03:49:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2021-12-28 03:49:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:49:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:49:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:49:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:49:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2021-12-28 03:49:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2021-12-28 03:49:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-28 03:49:18,344 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-28 03:49:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-28 03:49:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-28 03:49:18,345 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2021-12-28 03:49:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2021-12-28 03:49:18,346 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2021-12-28 03:49:18,346 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2021-12-28 03:49:18,350 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2021-12-28 03:49:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2021-12-28 03:49:18,371 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2021-12-28 03:49:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2021-12-28 03:49:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2021-12-28 03:49:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2021-12-28 03:49:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-28 03:49:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-28 03:49:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:49:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:49:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2021-12-28 03:49:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2021-12-28 03:49:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2021-12-28 03:49:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2021-12-28 03:49:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2021-12-28 03:49:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2021-12-28 03:49:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:49:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:49:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:49:18,975 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:49:18,978 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:49:27,917 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:49:27,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:49:27,927 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:49:27,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:49:27 BoogieIcfgContainer [2021-12-28 03:49:27,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:49:27,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:49:27,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:49:27,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:49:27,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:49:15" (1/3) ... [2021-12-28 03:49:27,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52607dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:49:27, skipping insertion in model container [2021-12-28 03:49:27,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:49:17" (2/3) ... [2021-12-28 03:49:27,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52607dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:49:27, skipping insertion in model container [2021-12-28 03:49:27,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:49:27" (3/3) ... [2021-12-28 03:49:27,935 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2021-12-28 03:49:27,938 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:49:27,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:49:27,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:49:27,992 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 [2021-12-28 03:49:27,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:49:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1019 states have (on average 1.3886162904808637) internal successors, (1415), 1042 states have internal predecessors, (1415), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2021-12-28 03:49:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 03:49:28,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:28,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:28,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:28,043 INFO L85 PathProgramCache]: Analyzing trace with hash -818407598, now seen corresponding path program 1 times [2021-12-28 03:49:28,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646233090] [2021-12-28 03:49:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:28,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:28,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:28,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646233090] [2021-12-28 03:49:28,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646233090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:28,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:28,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:28,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986780313] [2021-12-28 03:49:28,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:28,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:28,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:28,489 INFO L87 Difference]: Start difference. First operand has 1329 states, 1019 states have (on average 1.3886162904808637) internal successors, (1415), 1042 states have internal predecessors, (1415), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 03:49:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:28,716 INFO L93 Difference]: Finished difference Result 3807 states and 5554 transitions. [2021-12-28 03:49:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2021-12-28 03:49:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:28,739 INFO L225 Difference]: With dead ends: 3807 [2021-12-28 03:49:28,739 INFO L226 Difference]: Without dead ends: 2471 [2021-12-28 03:49:28,760 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 [2021-12-28 03:49:28,765 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 1619 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:28,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 4064 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:49:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-28 03:49:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2453. [2021-12-28 03:49:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1894 states have (on average 1.3875395987328405) internal successors, (2628), 1929 states have internal predecessors, (2628), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2021-12-28 03:49:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3479 transitions. [2021-12-28 03:49:28,965 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3479 transitions. Word has length 17 [2021-12-28 03:49:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:28,966 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3479 transitions. [2021-12-28 03:49:28,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 03:49:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3479 transitions. [2021-12-28 03:49:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:49:28,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:28,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:28,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:49:28,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1284284555, now seen corresponding path program 1 times [2021-12-28 03:49:28,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:28,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272664187] [2021-12-28 03:49:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:28,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:29,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:29,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272664187] [2021-12-28 03:49:29,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272664187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:29,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:29,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:29,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068394908] [2021-12-28 03:49:29,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:29,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:29,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:29,088 INFO L87 Difference]: Start difference. First operand 2453 states and 3479 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-28 03:49:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:29,179 INFO L93 Difference]: Finished difference Result 2612 states and 3691 transitions. [2021-12-28 03:49:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:29,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2021-12-28 03:49:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:29,193 INFO L225 Difference]: With dead ends: 2612 [2021-12-28 03:49:29,193 INFO L226 Difference]: Without dead ends: 2608 [2021-12-28 03:49:29,197 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 [2021-12-28 03:49:29,199 INFO L933 BasicCegarLoop]: 1886 mSDtfsCounter, 1266 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:29,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 2587 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:49:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2021-12-28 03:49:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2606. [2021-12-28 03:49:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2032 states have (on average 1.391240157480315) internal successors, (2827), 2067 states have internal predecessors, (2827), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2021-12-28 03:49:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3684 transitions. [2021-12-28 03:49:29,290 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3684 transitions. Word has length 19 [2021-12-28 03:49:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:29,291 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3684 transitions. [2021-12-28 03:49:29,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-12-28 03:49:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3684 transitions. [2021-12-28 03:49:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 03:49:29,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:29,293 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] [2021-12-28 03:49:29,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:49:29,294 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1157630563, now seen corresponding path program 1 times [2021-12-28 03:49:29,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:29,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428538069] [2021-12-28 03:49:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:29,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:29,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:29,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428538069] [2021-12-28 03:49:29,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428538069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:29,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:29,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:29,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014118114] [2021-12-28 03:49:29,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:29,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:29,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:29,389 INFO L87 Difference]: Start difference. First operand 2606 states and 3684 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-28 03:49:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:29,482 INFO L93 Difference]: Finished difference Result 2608 states and 3685 transitions. [2021-12-28 03:49:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:29,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20 [2021-12-28 03:49:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:29,492 INFO L225 Difference]: With dead ends: 2608 [2021-12-28 03:49:29,492 INFO L226 Difference]: Without dead ends: 2605 [2021-12-28 03:49:29,495 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 [2021-12-28 03:49:29,498 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 1859 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1875 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 [2021-12-28 03:49:29,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 1875 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:49:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2021-12-28 03:49:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2605. [2021-12-28 03:49:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2032 states have (on average 1.390748031496063) internal successors, (2826), 2066 states have internal predecessors, (2826), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2021-12-28 03:49:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3682 transitions. [2021-12-28 03:49:29,580 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3682 transitions. Word has length 20 [2021-12-28 03:49:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:29,580 INFO L470 AbstractCegarLoop]: Abstraction has 2605 states and 3682 transitions. [2021-12-28 03:49:29,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-12-28 03:49:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3682 transitions. [2021-12-28 03:49:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-28 03:49:29,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:29,581 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] [2021-12-28 03:49:29,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:49:29,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:29,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:29,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1526328974, now seen corresponding path program 1 times [2021-12-28 03:49:29,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:29,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874334434] [2021-12-28 03:49:29,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:29,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:29,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874334434] [2021-12-28 03:49:29,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874334434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:29,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:29,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:29,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616054492] [2021-12-28 03:49:29,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:29,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:29,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:29,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:29,681 INFO L87 Difference]: Start difference. First operand 2605 states and 3682 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-12-28 03:49:29,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:29,821 INFO L93 Difference]: Finished difference Result 7785 states and 11083 transitions. [2021-12-28 03:49:29,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:29,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 21 [2021-12-28 03:49:29,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:29,843 INFO L225 Difference]: With dead ends: 7785 [2021-12-28 03:49:29,843 INFO L226 Difference]: Without dead ends: 5183 [2021-12-28 03:49:29,852 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 [2021-12-28 03:49:29,857 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 1861 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:29,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:49:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2021-12-28 03:49:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5171. [2021-12-28 03:49:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 4040 states have (on average 1.391089108910891) internal successors, (5620), 4107 states have internal predecessors, (5620), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2021-12-28 03:49:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 7352 transitions. [2021-12-28 03:49:30,016 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 7352 transitions. Word has length 21 [2021-12-28 03:49:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:30,016 INFO L470 AbstractCegarLoop]: Abstraction has 5171 states and 7352 transitions. [2021-12-28 03:49:30,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-12-28 03:49:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 7352 transitions. [2021-12-28 03:49:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 03:49:30,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:30,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:49:30,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:49:30,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 71082694, now seen corresponding path program 1 times [2021-12-28 03:49:30,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:30,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684405624] [2021-12-28 03:49:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:30,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:30,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:30,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684405624] [2021-12-28 03:49:30,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684405624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:30,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:30,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:30,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348756514] [2021-12-28 03:49:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:30,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:30,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:30,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:30,099 INFO L87 Difference]: Start difference. First operand 5171 states and 7352 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) [2021-12-28 03:49:30,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:30,194 INFO L93 Difference]: Finished difference Result 5173 states and 7353 transitions. [2021-12-28 03:49:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:30,195 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 [2021-12-28 03:49:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:30,213 INFO L225 Difference]: With dead ends: 5173 [2021-12-28 03:49:30,214 INFO L226 Difference]: Without dead ends: 5170 [2021-12-28 03:49:30,216 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 [2021-12-28 03:49:30,217 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 1855 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1855 SdHoareTripleChecker+Valid, 1873 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 [2021-12-28 03:49:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1855 Valid, 1873 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:49:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5170 states. [2021-12-28 03:49:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5170 to 5170. [2021-12-28 03:49:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 4040 states have (on average 1.3908415841584159) internal successors, (5619), 4106 states have internal predecessors, (5619), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2021-12-28 03:49:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7350 transitions. [2021-12-28 03:49:30,360 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7350 transitions. Word has length 22 [2021-12-28 03:49:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:30,361 INFO L470 AbstractCegarLoop]: Abstraction has 5170 states and 7350 transitions. [2021-12-28 03:49:30,361 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) [2021-12-28 03:49:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7350 transitions. [2021-12-28 03:49:30,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:49:30,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:30,362 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] [2021-12-28 03:49:30,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:49:30,363 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:30,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2091874159, now seen corresponding path program 1 times [2021-12-28 03:49:30,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:30,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994437432] [2021-12-28 03:49:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:30,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:49:30,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:30,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994437432] [2021-12-28 03:49:30,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994437432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:30,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:30,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:49:30,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688936261] [2021-12-28 03:49:30,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:30,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:49:30,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:30,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:49:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:49:30,496 INFO L87 Difference]: Start difference. First operand 5170 states and 7350 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) [2021-12-28 03:49:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:30,587 INFO L93 Difference]: Finished difference Result 5172 states and 7351 transitions. [2021-12-28 03:49:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:49:30,589 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 [2021-12-28 03:49:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:30,608 INFO L225 Difference]: With dead ends: 5172 [2021-12-28 03:49:30,608 INFO L226 Difference]: Without dead ends: 5158 [2021-12-28 03:49:30,611 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 [2021-12-28 03:49:30,612 INFO L933 BasicCegarLoop]: 1872 mSDtfsCounter, 1852 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 1872 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 [2021-12-28 03:49:30,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 1872 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:49:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-12-28 03:49:30,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5158. [2021-12-28 03:49:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 4031 states have (on average 1.3904738278342843) internal successors, (5605), 4095 states have internal predecessors, (5605), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2021-12-28 03:49:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7331 transitions. [2021-12-28 03:49:30,776 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7331 transitions. Word has length 23 [2021-12-28 03:49:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:30,777 INFO L470 AbstractCegarLoop]: Abstraction has 5158 states and 7331 transitions. [2021-12-28 03:49:30,777 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) [2021-12-28 03:49:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7331 transitions. [2021-12-28 03:49:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-28 03:49:30,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:30,781 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:49:30,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:49:30,781 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -95947495, now seen corresponding path program 1 times [2021-12-28 03:49:30,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:30,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929966675] [2021-12-28 03:49:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:30,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:30,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 03:49:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 03:49:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:49:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:49:30,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929966675] [2021-12-28 03:49:30,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929966675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:30,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:30,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:49:30,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276031405] [2021-12-28 03:49:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:30,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:49:30,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:49:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:49:30,963 INFO L87 Difference]: Start difference. First operand 5158 states and 7331 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 03:49:34,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:36,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:38,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:41,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:49:44,056 INFO L93 Difference]: Finished difference Result 10800 states and 15472 transitions. [2021-12-28 03:49:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:49:44,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2021-12-28 03:49:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:49:44,094 INFO L225 Difference]: With dead ends: 10800 [2021-12-28 03:49:44,094 INFO L226 Difference]: Without dead ends: 5645 [2021-12-28 03:49:44,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:49:44,114 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 2569 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 970 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2717 SdHoareTripleChecker+Valid, 4434 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:49:44,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2717 Valid, 4434 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 1680 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2021-12-28 03:49:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2021-12-28 03:49:44,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 5168. [2021-12-28 03:49:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 4039 states have (on average 1.3892052488239663) internal successors, (5611), 4107 states have internal predecessors, (5611), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2021-12-28 03:49:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7337 transitions. [2021-12-28 03:49:44,304 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7337 transitions. Word has length 48 [2021-12-28 03:49:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:49:44,306 INFO L470 AbstractCegarLoop]: Abstraction has 5168 states and 7337 transitions. [2021-12-28 03:49:44,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-28 03:49:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7337 transitions. [2021-12-28 03:49:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 03:49:44,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:49:44,311 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:49:44,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:49:44,312 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:49:44,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:49:44,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1890353553, now seen corresponding path program 1 times [2021-12-28 03:49:44,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:49:44,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357869802] [2021-12-28 03:49:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:49:44,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:49:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:49:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:49:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:49:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:49:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:49:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:49:44,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:49:44,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357869802] [2021-12-28 03:49:44,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357869802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:49:44,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:49:44,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:49:44,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438046004] [2021-12-28 03:49:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:49:44,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:49:44,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:49:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:49:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:49:44,530 INFO L87 Difference]: Start difference. First operand 5168 states and 7337 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 03:49:48,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:50,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:52,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:56,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:57,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:49:59,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:50:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:04,817 INFO L93 Difference]: Finished difference Result 11328 states and 16424 transitions. [2021-12-28 03:50:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:50:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2021-12-28 03:50:04,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:04,845 INFO L225 Difference]: With dead ends: 11328 [2021-12-28 03:50:04,845 INFO L226 Difference]: Without dead ends: 6163 [2021-12-28 03:50:04,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:50:04,863 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 2799 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 2960 mSolverCounterSat, 1141 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 6269 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 2960 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:04,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2903 Valid, 6269 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 2960 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2021-12-28 03:50:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6163 states. [2021-12-28 03:50:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6163 to 4866. [2021-12-28 03:50:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4866 states, 3821 states have (on average 1.3904736979848207) internal successors, (5313), 3889 states have internal predecessors, (5313), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2021-12-28 03:50:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4866 states to 4866 states and 6875 transitions. [2021-12-28 03:50:05,067 INFO L78 Accepts]: Start accepts. Automaton has 4866 states and 6875 transitions. Word has length 65 [2021-12-28 03:50:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:05,067 INFO L470 AbstractCegarLoop]: Abstraction has 4866 states and 6875 transitions. [2021-12-28 03:50:05,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 03:50:05,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4866 states and 6875 transitions. [2021-12-28 03:50:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 03:50:05,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:05,072 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 03:50:05,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:50:05,072 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash 43225383, now seen corresponding path program 1 times [2021-12-28 03:50:05,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:05,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331416728] [2021-12-28 03:50:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:05,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:50:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 03:50:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:50:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:50:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 03:50:05,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:05,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331416728] [2021-12-28 03:50:05,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331416728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:05,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:05,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:50:05,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767885999] [2021-12-28 03:50:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:05,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:50:05,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:50:05,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:50:05,257 INFO L87 Difference]: Start difference. First operand 4866 states and 6875 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 03:50:08,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:50:10,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:50:12,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:50:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:50:15,634 INFO L93 Difference]: Finished difference Result 10620 states and 15424 transitions. [2021-12-28 03:50:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:50:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2021-12-28 03:50:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:50:15,652 INFO L225 Difference]: With dead ends: 10620 [2021-12-28 03:50:15,652 INFO L226 Difference]: Without dead ends: 5757 [2021-12-28 03:50:15,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:50:15,671 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 1517 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 946 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:50:15,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 3809 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [946 Valid, 1635 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2021-12-28 03:50:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-12-28 03:50:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 4870. [2021-12-28 03:50:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4870 states, 3825 states have (on average 1.3900653594771242) internal successors, (5317), 3893 states have internal predecessors, (5317), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2021-12-28 03:50:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4870 states to 4870 states and 6879 transitions. [2021-12-28 03:50:15,821 INFO L78 Accepts]: Start accepts. Automaton has 4870 states and 6879 transitions. Word has length 65 [2021-12-28 03:50:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:50:15,823 INFO L470 AbstractCegarLoop]: Abstraction has 4870 states and 6879 transitions. [2021-12-28 03:50:15,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 03:50:15,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4870 states and 6879 transitions. [2021-12-28 03:50:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-28 03:50:15,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:50:15,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:50:15,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:50:15,827 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:50:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:50:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1654589314, now seen corresponding path program 1 times [2021-12-28 03:50:15,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:50:15,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829184191] [2021-12-28 03:50:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:50:15,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:50:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:50:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:50:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:50:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:50:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 03:50:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:50:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:50:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:50:15,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:50:15,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829184191] [2021-12-28 03:50:15,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829184191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:50:15,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:50:15,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:50:15,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147543409] [2021-12-28 03:50:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:50:15,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:50:15,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:50:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:50:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:50:15,961 INFO L87 Difference]: Start difference. First operand 4870 states and 6879 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 03:50:18,925 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 [] [2021-12-28 03:50:20,960 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []