./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.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 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:41:16,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:41:16,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:41:16,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:41:16,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:41:16,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:41:16,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:41:16,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:41:16,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:41:16,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:41:16,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:41:16,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:41:16,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:41:16,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:41:16,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:41:16,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:41:16,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:41:16,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:41:16,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:41:16,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:41:16,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:41:16,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:41:16,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:41:16,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:41:16,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:41:16,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:41:16,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:41:16,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:41:16,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:41:16,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:41:16,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:41:16,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:41:16,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:41:16,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:41:16,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:41:16,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:41:16,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:41:16,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:41:16,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:41:16,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:41:16,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:41:16,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:41:16,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:41:16,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:41:16,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:41:16,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:41:16,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:41:16,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:41:16,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:41:16,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:41:16,543 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:41:16,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:41:16,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:41:16,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:41:16,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:41:16,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:41:16,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:41:16,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:41:16,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:41:16,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:41:16,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:41:16,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:41:16,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:41:16,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:16,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:41:16,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:41:16,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:41:16,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:41:16,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:41:16,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:41:16,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:41:16,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:41:16,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:41:16,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 [2021-12-16 03:41:16,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:41:16,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:41:16,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:41:16,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:41:16,824 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:41:16,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-12-16 03:41:16,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db230dc4c/4f30124522f24342bc39b8144f0e4567/FLAGd1e7059bf [2021-12-16 03:41:17,540 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:41:17,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-12-16 03:41:17,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db230dc4c/4f30124522f24342bc39b8144f0e4567/FLAGd1e7059bf [2021-12-16 03:41:17,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db230dc4c/4f30124522f24342bc39b8144f0e4567 [2021-12-16 03:41:17,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:41:17,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:41:17,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:17,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:41:17,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:41:17,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:17" (1/1) ... [2021-12-16 03:41:17,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bfec9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:17, skipping insertion in model container [2021-12-16 03:41:17,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:17" (1/1) ... [2021-12-16 03:41:17,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:41:17,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:41:19,483 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-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2021-12-16 03:41:19,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:19,612 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:41:20,073 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-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2021-12-16 03:41:20,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:20,218 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:41:20,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20 WrapperNode [2021-12-16 03:41:20,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:20,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:20,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:41:20,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:41:20,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:20,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:20,724 INFO L137 Inliner]: procedures = 189, calls = 6921, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 16566 [2021-12-16 03:41:20,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:20,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:41:20,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:41:20,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:41:20,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:20,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:20,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:20,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:21,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:21,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:21,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:21,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:41:21,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:41:21,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:41:21,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:41:21,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (1/1) ... [2021-12-16 03:41:21,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:21,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:41:21,392 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) [2021-12-16 03:41:21,411 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 [2021-12-16 03:41:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2021-12-16 03:41:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2021-12-16 03:41:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2021-12-16 03:41:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2021-12-16 03:41:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2021-12-16 03:41:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2021-12-16 03:41:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:41:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-16 03:41:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-16 03:41:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2021-12-16 03:41:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2021-12-16 03:41:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2021-12-16 03:41:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2021-12-16 03:41:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2021-12-16 03:41:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2021-12-16 03:41:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:41:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:41:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2021-12-16 03:41:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2021-12-16 03:41:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:41:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2021-12-16 03:41:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2021-12-16 03:41:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2021-12-16 03:41:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2021-12-16 03:41:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2021-12-16 03:41:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2021-12-16 03:41:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:41:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:41:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2021-12-16 03:41:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2021-12-16 03:41:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2021-12-16 03:41:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2021-12-16 03:41:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:41:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:41:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:41:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2021-12-16 03:41:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2021-12-16 03:41:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:41:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:41:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2021-12-16 03:41:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2021-12-16 03:41:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2021-12-16 03:41:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2021-12-16 03:41:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2021-12-16 03:41:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2021-12-16 03:41:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-16 03:41:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-16 03:41:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:41:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:41:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-16 03:41:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-16 03:41:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2021-12-16 03:41:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2021-12-16 03:41:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 03:41:21,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 03:41:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-16 03:41:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-16 03:41:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2021-12-16 03:41:21,461 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2021-12-16 03:41:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:41:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:41:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:41:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2021-12-16 03:41:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2021-12-16 03:41:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2021-12-16 03:41:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2021-12-16 03:41:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2021-12-16 03:41:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2021-12-16 03:41:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-16 03:41:21,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-16 03:41:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:41:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2021-12-16 03:41:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2021-12-16 03:41:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2021-12-16 03:41:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2021-12-16 03:41:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2021-12-16 03:41:21,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2021-12-16 03:41:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2021-12-16 03:41:21,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2021-12-16 03:41:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2021-12-16 03:41:21,473 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2021-12-16 03:41:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:41:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:41:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2021-12-16 03:41:21,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2021-12-16 03:41:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2021-12-16 03:41:21,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2021-12-16 03:41:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2021-12-16 03:41:21,474 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2021-12-16 03:41:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2021-12-16 03:41:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2021-12-16 03:41:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:41:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:41:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2021-12-16 03:41:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2021-12-16 03:41:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2021-12-16 03:41:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2021-12-16 03:41:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:41:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-16 03:41:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-16 03:41:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2021-12-16 03:41:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2021-12-16 03:41:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2021-12-16 03:41:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2021-12-16 03:41:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:41:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2021-12-16 03:41:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2021-12-16 03:41:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:41:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:41:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2021-12-16 03:41:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2021-12-16 03:41:22,596 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:41:22,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:41:35,104 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:41:35,134 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:41:35,134 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:41:35,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:35 BoogieIcfgContainer [2021-12-16 03:41:35,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:41:35,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:41:35,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:41:35,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:41:35,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:41:17" (1/3) ... [2021-12-16 03:41:35,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716b9da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:35, skipping insertion in model container [2021-12-16 03:41:35,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:20" (2/3) ... [2021-12-16 03:41:35,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716b9da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:35, skipping insertion in model container [2021-12-16 03:41:35,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:35" (3/3) ... [2021-12-16 03:41:35,151 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2021-12-16 03:41:35,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:41:35,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:41:35,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:41:35,216 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 [2021-12-16 03:41:35,216 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:41:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 5301 states, 3974 states have (on average 1.5359838953195772) internal successors, (6104), 3988 states have internal predecessors, (6104), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) [2021-12-16 03:41:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 03:41:35,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:35,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:35,300 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1796736915, now seen corresponding path program 1 times [2021-12-16 03:41:35,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:35,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134326454] [2021-12-16 03:41:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:35,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:35,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:35,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134326454] [2021-12-16 03:41:35,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134326454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:35,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:35,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:35,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986033571] [2021-12-16 03:41:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:35,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:35,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:35,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:35,962 INFO L87 Difference]: Start difference. First operand has 5301 states, 3974 states have (on average 1.5359838953195772) internal successors, (6104), 3988 states have internal predecessors, (6104), 1277 states have call successors, (1277), 48 states have call predecessors, (1277), 48 states have return successors, (1277), 1276 states have call predecessors, (1277), 1277 states have call successors, (1277) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-16 03:41:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:36,489 INFO L93 Difference]: Finished difference Result 10596 states and 17366 transitions. [2021-12-16 03:41:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2021-12-16 03:41:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:36,578 INFO L225 Difference]: With dead ends: 10596 [2021-12-16 03:41:36,578 INFO L226 Difference]: Without dead ends: 5294 [2021-12-16 03:41:36,779 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 [2021-12-16 03:41:36,782 INFO L933 BasicCegarLoop]: 8643 mSDtfsCounter, 8639 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8639 SdHoareTripleChecker+Valid, 8643 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:36,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8639 Valid, 8643 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-12-16 03:41:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5294. [2021-12-16 03:41:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 3970 states have (on average 1.5357682619647355) internal successors, (6097), 3981 states have internal predecessors, (6097), 1276 states have call successors, (1276), 48 states have call predecessors, (1276), 47 states have return successors, (1267), 1266 states have call predecessors, (1267), 1267 states have call successors, (1267) [2021-12-16 03:41:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 8640 transitions. [2021-12-16 03:41:37,563 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 8640 transitions. Word has length 8 [2021-12-16 03:41:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:37,563 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 8640 transitions. [2021-12-16 03:41:37,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-16 03:41:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 8640 transitions. [2021-12-16 03:41:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 03:41:37,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:37,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:37,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:41:37,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -138225567, now seen corresponding path program 1 times [2021-12-16 03:41:37,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:37,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983835318] [2021-12-16 03:41:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:37,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:37,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:37,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983835318] [2021-12-16 03:41:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983835318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:37,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:37,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:37,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532759806] [2021-12-16 03:41:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:37,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:37,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:37,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:37,885 INFO L87 Difference]: Start difference. First operand 5294 states and 8640 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-16 03:41:38,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:38,387 INFO L93 Difference]: Finished difference Result 10658 states and 17395 transitions. [2021-12-16 03:41:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:38,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2021-12-16 03:41:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:38,426 INFO L225 Difference]: With dead ends: 10658 [2021-12-16 03:41:38,426 INFO L226 Difference]: Without dead ends: 5367 [2021-12-16 03:41:38,462 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 [2021-12-16 03:41:38,464 INFO L933 BasicCegarLoop]: 8640 mSDtfsCounter, 8370 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8370 SdHoareTripleChecker+Valid, 9007 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:38,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8370 Valid, 9007 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-12-16 03:41:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 5364. [2021-12-16 03:41:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 4032 states have (on average 1.5364583333333333) internal successors, (6195), 4041 states have internal predecessors, (6195), 1279 states have call successors, (1279), 54 states have call predecessors, (1279), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-16 03:41:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 8745 transitions. [2021-12-16 03:41:39,135 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 8745 transitions. Word has length 9 [2021-12-16 03:41:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:39,135 INFO L470 AbstractCegarLoop]: Abstraction has 5364 states and 8745 transitions. [2021-12-16 03:41:39,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-16 03:41:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 8745 transitions. [2021-12-16 03:41:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-16 03:41:39,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:39,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:39,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:41:39,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:39,138 INFO L85 PathProgramCache]: Analyzing trace with hash 7484502, now seen corresponding path program 1 times [2021-12-16 03:41:39,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:39,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986849438] [2021-12-16 03:41:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:39,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:39,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986849438] [2021-12-16 03:41:39,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986849438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:39,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:39,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:39,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039768898] [2021-12-16 03:41:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:39,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:39,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:39,451 INFO L87 Difference]: Start difference. First operand 5364 states and 8745 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-16 03:41:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:39,679 INFO L93 Difference]: Finished difference Result 5366 states and 8746 transitions. [2021-12-16 03:41:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2021-12-16 03:41:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:39,714 INFO L225 Difference]: With dead ends: 5366 [2021-12-16 03:41:39,714 INFO L226 Difference]: Without dead ends: 5363 [2021-12-16 03:41:39,721 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 [2021-12-16 03:41:39,722 INFO L933 BasicCegarLoop]: 8633 mSDtfsCounter, 8627 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8627 SdHoareTripleChecker+Valid, 8633 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:39,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8627 Valid, 8633 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-12-16 03:41:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 5363. [2021-12-16 03:41:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5363 states, 4032 states have (on average 1.5362103174603174) internal successors, (6194), 4040 states have internal predecessors, (6194), 1278 states have call successors, (1278), 54 states have call predecessors, (1278), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-16 03:41:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5363 states to 5363 states and 8743 transitions. [2021-12-16 03:41:40,357 INFO L78 Accepts]: Start accepts. Automaton has 5363 states and 8743 transitions. Word has length 10 [2021-12-16 03:41:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:40,357 INFO L470 AbstractCegarLoop]: Abstraction has 5363 states and 8743 transitions. [2021-12-16 03:41:40,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-16 03:41:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5363 states and 8743 transitions. [2021-12-16 03:41:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 03:41:40,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:40,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:40,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:41:40,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 229534212, now seen corresponding path program 1 times [2021-12-16 03:41:40,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:40,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590576436] [2021-12-16 03:41:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:40,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:40,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:40,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590576436] [2021-12-16 03:41:40,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590576436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:40,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:40,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:40,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179937986] [2021-12-16 03:41:40,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:40,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:40,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:40,625 INFO L87 Difference]: Start difference. First operand 5363 states and 8743 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-12-16 03:41:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:40,842 INFO L93 Difference]: Finished difference Result 5365 states and 8744 transitions. [2021-12-16 03:41:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:40,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2021-12-16 03:41:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:40,877 INFO L225 Difference]: With dead ends: 5365 [2021-12-16 03:41:40,878 INFO L226 Difference]: Without dead ends: 5362 [2021-12-16 03:41:40,885 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 [2021-12-16 03:41:40,890 INFO L933 BasicCegarLoop]: 8631 mSDtfsCounter, 8624 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8624 SdHoareTripleChecker+Valid, 8631 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:40,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8624 Valid, 8631 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-12-16 03:41:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5362. [2021-12-16 03:41:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5362 states, 4032 states have (on average 1.5359623015873016) internal successors, (6193), 4039 states have internal predecessors, (6193), 1277 states have call successors, (1277), 54 states have call predecessors, (1277), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-16 03:41:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5362 states to 5362 states and 8741 transitions. [2021-12-16 03:41:41,650 INFO L78 Accepts]: Start accepts. Automaton has 5362 states and 8741 transitions. Word has length 11 [2021-12-16 03:41:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:41,651 INFO L470 AbstractCegarLoop]: Abstraction has 5362 states and 8741 transitions. [2021-12-16 03:41:41,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-12-16 03:41:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5362 states and 8741 transitions. [2021-12-16 03:41:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 03:41:41,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:41,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:41,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:41:41,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:41,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1476854503, now seen corresponding path program 1 times [2021-12-16 03:41:41,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:41,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531822202] [2021-12-16 03:41:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:41,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:41,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531822202] [2021-12-16 03:41:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531822202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:41,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:41,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:41,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594115989] [2021-12-16 03:41:41,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:41,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:41,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:41,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:41,907 INFO L87 Difference]: Start difference. First operand 5362 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-16 03:41:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:42,184 INFO L93 Difference]: Finished difference Result 5364 states and 8742 transitions. [2021-12-16 03:41:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 12 [2021-12-16 03:41:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:42,237 INFO L225 Difference]: With dead ends: 5364 [2021-12-16 03:41:42,237 INFO L226 Difference]: Without dead ends: 5361 [2021-12-16 03:41:42,245 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 [2021-12-16 03:41:42,245 INFO L933 BasicCegarLoop]: 8629 mSDtfsCounter, 8621 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8621 SdHoareTripleChecker+Valid, 8629 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:42,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8621 Valid, 8629 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-12-16 03:41:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 5361. [2021-12-16 03:41:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 4032 states have (on average 1.5357142857142858) internal successors, (6192), 4038 states have internal predecessors, (6192), 1276 states have call successors, (1276), 54 states have call predecessors, (1276), 52 states have return successors, (1271), 1270 states have call predecessors, (1271), 1271 states have call successors, (1271) [2021-12-16 03:41:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8739 transitions. [2021-12-16 03:41:42,944 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8739 transitions. Word has length 12 [2021-12-16 03:41:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:42,945 INFO L470 AbstractCegarLoop]: Abstraction has 5361 states and 8739 transitions. [2021-12-16 03:41:42,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-16 03:41:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8739 transitions. [2021-12-16 03:41:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 03:41:42,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:42,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:42,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:41:42,947 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:42,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1459675047, now seen corresponding path program 1 times [2021-12-16 03:41:42,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:42,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601372659] [2021-12-16 03:41:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:42,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:43,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:43,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601372659] [2021-12-16 03:41:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601372659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:43,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:43,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:43,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788604111] [2021-12-16 03:41:43,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:43,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:43,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:43,157 INFO L87 Difference]: Start difference. First operand 5361 states and 8739 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-16 03:41:43,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:43,581 INFO L93 Difference]: Finished difference Result 16061 states and 26323 transitions. [2021-12-16 03:41:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:43,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2021-12-16 03:41:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:43,656 INFO L225 Difference]: With dead ends: 16061 [2021-12-16 03:41:43,656 INFO L226 Difference]: Without dead ends: 10697 [2021-12-16 03:41:43,800 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 [2021-12-16 03:41:43,802 INFO L933 BasicCegarLoop]: 10012 mSDtfsCounter, 8649 mSDsluCounter, 8651 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8649 SdHoareTripleChecker+Valid, 18663 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:43,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8649 Valid, 18663 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:41:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2021-12-16 03:41:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 10688. [2021-12-16 03:41:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10688 states, 8041 states have (on average 1.5368735231936326) internal successors, (12358), 8052 states have internal predecessors, (12358), 2544 states have call successors, (2544), 105 states have call predecessors, (2544), 102 states have return successors, (2617), 2534 states have call predecessors, (2617), 2537 states have call successors, (2617) [2021-12-16 03:41:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 17519 transitions. [2021-12-16 03:41:45,191 INFO L78 Accepts]: Start accepts. Automaton has 10688 states and 17519 transitions. Word has length 13 [2021-12-16 03:41:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:45,191 INFO L470 AbstractCegarLoop]: Abstraction has 10688 states and 17519 transitions. [2021-12-16 03:41:45,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-12-16 03:41:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 10688 states and 17519 transitions. [2021-12-16 03:41:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-16 03:41:45,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:45,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:45,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:41:45,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash -836050860, now seen corresponding path program 1 times [2021-12-16 03:41:45,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:45,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334560819] [2021-12-16 03:41:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:45,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:41:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:41:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:41:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:41:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:41:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:41:45,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:45,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334560819] [2021-12-16 03:41:45,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334560819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:45,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:45,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:41:45,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106414260] [2021-12-16 03:41:45,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:45,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:41:45,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:45,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:41:45,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:41:45,736 INFO L87 Difference]: Start difference. First operand 10688 states and 17519 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 03:41:54,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-16 03:41:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:54,684 INFO L93 Difference]: Finished difference Result 21624 states and 35542 transitions. [2021-12-16 03:41:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:41:54,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2021-12-16 03:41:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:54,763 INFO L225 Difference]: With dead ends: 21624 [2021-12-16 03:41:54,763 INFO L226 Difference]: Without dead ends: 10939 [2021-12-16 03:41:54,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:41:54,864 INFO L933 BasicCegarLoop]: 8508 mSDtfsCounter, 509 mSDsluCounter, 22188 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 1325 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 30696 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1325 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:54,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 30696 Invalid, 3660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1325 Valid, 2334 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-12-16 03:41:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-12-16 03:41:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10805. [2021-12-16 03:41:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10805 states, 8137 states have (on average 1.5363155954282905) internal successors, (12501), 8150 states have internal predecessors, (12501), 2559 states have call successors, (2559), 107 states have call predecessors, (2559), 108 states have return successors, (2642), 2551 states have call predecessors, (2642), 2552 states have call successors, (2642) [2021-12-16 03:41:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 17702 transitions. [2021-12-16 03:41:56,253 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 17702 transitions. Word has length 69 [2021-12-16 03:41:56,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:56,254 INFO L470 AbstractCegarLoop]: Abstraction has 10805 states and 17702 transitions. [2021-12-16 03:41:56,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 03:41:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 17702 transitions. [2021-12-16 03:41:56,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-16 03:41:56,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:56,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:56,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:41:56,264 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 122332334, now seen corresponding path program 1 times [2021-12-16 03:41:56,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:56,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609185798] [2021-12-16 03:41:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:56,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:41:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:41:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 03:41:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:41:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:41:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 03:41:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:41:57,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:57,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609185798] [2021-12-16 03:41:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609185798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:57,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:57,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:41:57,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380998442] [2021-12-16 03:41:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:57,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:41:57,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:41:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:41:57,653 INFO L87 Difference]: Start difference. First operand 10805 states and 17702 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)