./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 08:27:09,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 08:27:09,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 08:27:09,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 08:27:09,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 08:27:09,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 08:27:09,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 08:27:09,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 08:27:09,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 08:27:09,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 08:27:09,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 08:27:09,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 08:27:09,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 08:27:09,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 08:27:09,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 08:27:09,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 08:27:09,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 08:27:09,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 08:27:09,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 08:27:09,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 08:27:09,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 08:27:09,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 08:27:09,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 08:27:09,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 08:27:09,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 08:27:09,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 08:27:09,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 08:27:09,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 08:27:09,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 08:27:09,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 08:27:09,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 08:27:09,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 08:27:09,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 08:27:09,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 08:27:09,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 08:27:09,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 08:27:09,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 08:27:09,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 08:27:09,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 08:27:09,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 08:27:09,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 08:27:09,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 08:27:09,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 08:27:09,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 08:27:09,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 08:27:09,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 08:27:09,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 08:27:09,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 08:27:09,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 08:27:09,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 08:27:09,350 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 08:27:09,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 08:27:09,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 08:27:09,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 08:27:09,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 08:27:09,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 08:27:09,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 08:27:09,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 08:27:09,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 08:27:09,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 08:27:09,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 08:27:09,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 08:27:09,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 08:27:09,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:27:09,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 08:27:09,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 08:27:09,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 08:27:09,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 08:27:09,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 08:27:09,354 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 08:27:09,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 08:27:09,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 08:27:09,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 08:27:09,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-12-18 08:27:09,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 08:27:09,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 08:27:09,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 08:27:09,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 08:27:09,594 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 08:27:09,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-18 08:27:09,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7769a3136/4cea9b91f9d54e5d91b536433bc0fed5/FLAGc31d1f596 [2021-12-18 08:27:10,316 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 08:27:10,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-18 08:27:10,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7769a3136/4cea9b91f9d54e5d91b536433bc0fed5/FLAGc31d1f596 [2021-12-18 08:27:10,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7769a3136/4cea9b91f9d54e5d91b536433bc0fed5 [2021-12-18 08:27:10,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 08:27:10,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 08:27:10,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 08:27:10,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 08:27:10,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 08:27:10,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:27:10" (1/1) ... [2021-12-18 08:27:10,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66115a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:10, skipping insertion in model container [2021-12-18 08:27:10,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:27:10" (1/1) ... [2021-12-18 08:27:10,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 08:27:10,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 08:27:12,407 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-18 08:27:12,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:27:12,475 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 08:27:12,691 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-18 08:27:12,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:27:12,812 INFO L208 MainTranslator]: Completed translation [2021-12-18 08:27:12,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12 WrapperNode [2021-12-18 08:27:12,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 08:27:12,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 08:27:12,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 08:27:12,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 08:27:12,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:12,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,014 INFO L137 Inliner]: procedures = 262, calls = 1347, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3303 [2021-12-18 08:27:13,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 08:27:13,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 08:27:13,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 08:27:13,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 08:27:13,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 08:27:13,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 08:27:13,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 08:27:13,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 08:27:13,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (1/1) ... [2021-12-18 08:27:13,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:27:13,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:27:13,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 08:27:13,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 08:27:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-12-18 08:27:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-12-18 08:27:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-12-18 08:27:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-12-18 08:27:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 08:27:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 08:27:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 08:27:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 08:27:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-12-18 08:27:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-12-18 08:27:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 08:27:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 08:27:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 08:27:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 08:27:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-12-18 08:27:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-12-18 08:27:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 08:27:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 08:27:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 08:27:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 08:27:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 08:27:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 08:27:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-18 08:27:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-18 08:27:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-12-18 08:27:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-12-18 08:27:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 08:27:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 08:27:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 08:27:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 08:27:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-18 08:27:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-18 08:27:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-18 08:27:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-18 08:27:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-12-18 08:27:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-12-18 08:27:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-18 08:27:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-18 08:27:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-18 08:27:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-18 08:27:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-12-18 08:27:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-12-18 08:27:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-18 08:27:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-18 08:27:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 08:27:13,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 08:27:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-18 08:27:13,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-18 08:27:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 08:27:13,229 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 08:27:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-18 08:27:13,229 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-18 08:27:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-12-18 08:27:13,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-12-18 08:27:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-12-18 08:27:13,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-12-18 08:27:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-12-18 08:27:13,231 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-12-18 08:27:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 08:27:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-18 08:27:13,232 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-18 08:27:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-18 08:27:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-18 08:27:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-12-18 08:27:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-12-18 08:27:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 08:27:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-18 08:27:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-18 08:27:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 08:27:13,233 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 08:27:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-18 08:27:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-18 08:27:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 08:27:13,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 08:27:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-12-18 08:27:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-12-18 08:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-18 08:27:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-18 08:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-12-18 08:27:13,235 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-12-18 08:27:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 08:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 08:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-12-18 08:27:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-12-18 08:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 08:27:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 08:27:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 08:27:13,236 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 08:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 08:27:13,237 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 08:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 08:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-18 08:27:13,237 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-18 08:27:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 08:27:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 08:27:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-12-18 08:27:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-12-18 08:27:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-12-18 08:27:13,238 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-12-18 08:27:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-12-18 08:27:13,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-12-18 08:27:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 08:27:13,239 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-12-18 08:27:13,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-12-18 08:27:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-18 08:27:13,240 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-18 08:27:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 08:27:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 08:27:13,240 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 08:27:13,240 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-18 08:27:13,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-18 08:27:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 08:27:13,241 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 08:27:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 08:27:13,241 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 08:27:13,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 08:27:13,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 08:27:13,242 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-12-18 08:27:13,242 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-12-18 08:27:13,244 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-18 08:27:13,244 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-18 08:27:13,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 08:27:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 08:27:13,245 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 08:27:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-18 08:27:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-18 08:27:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-18 08:27:13,246 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-18 08:27:13,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 08:27:13,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 08:27:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-12-18 08:27:13,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-12-18 08:27:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 08:27:13,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 08:27:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-12-18 08:27:13,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-12-18 08:27:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 08:27:13,251 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-12-18 08:27:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-12-18 08:27:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 08:27:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 08:27:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-12-18 08:27:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-12-18 08:27:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 08:27:13,252 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 08:27:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 08:27:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 08:27:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 08:27:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 08:27:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-18 08:27:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-18 08:27:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-12-18 08:27:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-12-18 08:27:13,253 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-18 08:27:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-18 08:27:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-12-18 08:27:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-12-18 08:27:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-18 08:27:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-18 08:27:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-18 08:27:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-18 08:27:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-12-18 08:27:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-12-18 08:27:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-18 08:27:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-18 08:27:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-12-18 08:27:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-12-18 08:27:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-18 08:27:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-18 08:27:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-12-18 08:27:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-12-18 08:27:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 08:27:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 08:27:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 08:27:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-12-18 08:27:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-12-18 08:27:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-12-18 08:27:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-12-18 08:27:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-18 08:27:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-18 08:27:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 08:27:13,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 08:27:13,847 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 08:27:13,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 08:27:14,453 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 08:27:16,360 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 08:27:16,377 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 08:27:16,377 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 08:27:16,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:27:16 BoogieIcfgContainer [2021-12-18 08:27:16,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 08:27:16,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 08:27:16,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 08:27:16,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 08:27:16,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:27:10" (1/3) ... [2021-12-18 08:27:16,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642289a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:27:16, skipping insertion in model container [2021-12-18 08:27:16,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:27:12" (2/3) ... [2021-12-18 08:27:16,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642289a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:27:16, skipping insertion in model container [2021-12-18 08:27:16,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:27:16" (3/3) ... [2021-12-18 08:27:16,387 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-18 08:27:16,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 08:27:16,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 08:27:16,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 08:27:16,447 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 08:27:16,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 08:27:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-12-18 08:27:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-18 08:27:16,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:16,509 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:16,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1357410998, now seen corresponding path program 1 times [2021-12-18 08:27:16,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:27:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326441885] [2021-12-18 08:27:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:16,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:27:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:27:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:27:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:27:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:27:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:27:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:27:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 08:27:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 08:27:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 08:27:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:27:17,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:27:17,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326441885] [2021-12-18 08:27:17,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326441885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:17,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:17,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:27:17,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60726629] [2021-12-18 08:27:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:17,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:27:17,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:27:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:27:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:27:17,148 INFO L87 Difference]: Start difference. First operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 08:27:22,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:27:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:24,549 INFO L93 Difference]: Finished difference Result 2992 states and 4288 transitions. [2021-12-18 08:27:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 08:27:24,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-12-18 08:27:24,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:24,583 INFO L225 Difference]: With dead ends: 2992 [2021-12-18 08:27:24,583 INFO L226 Difference]: Without dead ends: 1590 [2021-12-18 08:27:24,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:27:24,597 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1036 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 1084 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:24,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 3224 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-12-18 08:27:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-12-18 08:27:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1359. [2021-12-18 08:27:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 923 states have (on average 1.2838569880823403) internal successors, (1185), 945 states have internal predecessors, (1185), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2021-12-18 08:27:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1892 transitions. [2021-12-18 08:27:24,725 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1892 transitions. Word has length 121 [2021-12-18 08:27:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:24,725 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1892 transitions. [2021-12-18 08:27:24,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-18 08:27:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1892 transitions. [2021-12-18 08:27:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-18 08:27:24,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:24,731 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:24,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 08:27:24,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash -874608722, now seen corresponding path program 1 times [2021-12-18 08:27:24,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:27:24,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223087141] [2021-12-18 08:27:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:24,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:27:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:27:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:27:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:27:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:27:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:27:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:27:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 08:27:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 08:27:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 08:27:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:27:25,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:27:25,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223087141] [2021-12-18 08:27:25,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223087141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:25,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:25,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:27:25,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915705332] [2021-12-18 08:27:25,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:25,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:27:25,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:27:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:27:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:27:25,180 INFO L87 Difference]: Start difference. First operand 1359 states and 1892 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:27:36,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:27:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:36,470 INFO L93 Difference]: Finished difference Result 4502 states and 6412 transitions. [2021-12-18 08:27:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 08:27:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2021-12-18 08:27:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:36,491 INFO L225 Difference]: With dead ends: 4502 [2021-12-18 08:27:36,491 INFO L226 Difference]: Without dead ends: 3164 [2021-12-18 08:27:36,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:27:36,500 INFO L933 BasicCegarLoop]: 2042 mSDtfsCounter, 3668 mSDsluCounter, 6500 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 2424 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 8542 SdHoareTripleChecker+Invalid, 6222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2424 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:36,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 8542 Invalid, 6222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2424 Valid, 3797 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-12-18 08:27:36,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-18 08:27:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2724. [2021-12-18 08:27:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1851 states have (on average 1.283090221501891) internal successors, (2375), 1897 states have internal predecessors, (2375), 706 states have call successors, (706), 163 states have call predecessors, (706), 166 states have return successors, (727), 707 states have call predecessors, (727), 705 states have call successors, (727) [2021-12-18 08:27:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3808 transitions. [2021-12-18 08:27:36,619 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3808 transitions. Word has length 121 [2021-12-18 08:27:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:36,621 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3808 transitions. [2021-12-18 08:27:36,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:27:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3808 transitions. [2021-12-18 08:27:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-18 08:27:36,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:36,630 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 08:27:36,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:36,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -967648419, now seen corresponding path program 1 times [2021-12-18 08:27:36,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:27:36,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400544739] [2021-12-18 08:27:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:36,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:27:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:27:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:27:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:27:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:27:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:27:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:27:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 08:27:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 08:27:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 08:27:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:27:36,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:27:36,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400544739] [2021-12-18 08:27:36,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400544739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:36,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:36,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:27:36,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149274213] [2021-12-18 08:27:36,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:36,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:27:36,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:27:36,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:27:36,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:27:36,929 INFO L87 Difference]: Start difference. First operand 2724 states and 3808 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:27:43,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:27:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:46,436 INFO L93 Difference]: Finished difference Result 9009 states and 12892 transitions. [2021-12-18 08:27:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 08:27:46,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2021-12-18 08:27:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:46,470 INFO L225 Difference]: With dead ends: 9009 [2021-12-18 08:27:46,470 INFO L226 Difference]: Without dead ends: 6306 [2021-12-18 08:27:46,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:27:46,482 INFO L933 BasicCegarLoop]: 1971 mSDtfsCounter, 4797 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 3532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 7601 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3532 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:46,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5013 Valid, 7601 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3532 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2021-12-18 08:27:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-12-18 08:27:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5487. [2021-12-18 08:27:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 3730 states have (on average 1.2823056300268096) internal successors, (4783), 3826 states have internal predecessors, (4783), 1415 states have call successors, (1415), 326 states have call predecessors, (1415), 341 states have return successors, (1524), 1422 states have call predecessors, (1524), 1414 states have call successors, (1524) [2021-12-18 08:27:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7722 transitions. [2021-12-18 08:27:46,648 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7722 transitions. Word has length 122 [2021-12-18 08:27:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:46,650 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 7722 transitions. [2021-12-18 08:27:46,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:27:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7722 transitions. [2021-12-18 08:27:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-18 08:27:46,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:46,652 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:46,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 08:27:46,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1203194411, now seen corresponding path program 1 times [2021-12-18 08:27:46,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:27:46,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852387759] [2021-12-18 08:27:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:46,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:27:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:27:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:27:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:27:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:27:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:27:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:27:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 08:27:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 08:27:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 08:27:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:27:46,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:27:46,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852387759] [2021-12-18 08:27:46,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852387759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:46,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:46,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:27:46,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638763189] [2021-12-18 08:27:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:46,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:27:46,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:27:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:27:46,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:27:46,873 INFO L87 Difference]: Start difference. First operand 5487 states and 7722 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:27:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:27:56,870 INFO L93 Difference]: Finished difference Result 18067 states and 25992 transitions. [2021-12-18 08:27:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 08:27:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2021-12-18 08:27:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:27:56,932 INFO L225 Difference]: With dead ends: 18067 [2021-12-18 08:27:56,932 INFO L226 Difference]: Without dead ends: 12601 [2021-12-18 08:27:56,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:27:56,956 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 3794 mSDsluCounter, 6305 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 2483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 8269 SdHoareTripleChecker+Invalid, 6199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2483 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:27:56,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4010 Valid, 8269 Invalid, 6199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2483 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-12-18 08:27:56,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-12-18 08:27:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 10970. [2021-12-18 08:27:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 7461 states have (on average 1.2814636107760353) internal successors, (9561), 7653 states have internal predecessors, (9561), 2823 states have call successors, (2823), 654 states have call predecessors, (2823), 685 states have return successors, (3130), 2838 states have call predecessors, (3130), 2822 states have call successors, (3130) [2021-12-18 08:27:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 15514 transitions. [2021-12-18 08:27:57,382 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 15514 transitions. Word has length 123 [2021-12-18 08:27:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:27:57,382 INFO L470 AbstractCegarLoop]: Abstraction has 10970 states and 15514 transitions. [2021-12-18 08:27:57,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:27:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 15514 transitions. [2021-12-18 08:27:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-18 08:27:57,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:27:57,385 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:27:57,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 08:27:57,386 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:27:57,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:27:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash -292898560, now seen corresponding path program 1 times [2021-12-18 08:27:57,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:27:57,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110674936] [2021-12-18 08:27:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:27:57,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:27:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:27:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:27:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:27:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:27:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:27:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:27:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:27:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:27:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-18 08:27:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 08:27:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 08:27:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:27:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:27:57,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:27:57,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110674936] [2021-12-18 08:27:57,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110674936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:27:57,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:27:57,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:27:57,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795297634] [2021-12-18 08:27:57,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:27:57,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:27:57,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:27:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:27:57,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:27:57,624 INFO L87 Difference]: Start difference. First operand 10970 states and 15514 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:28:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:28:11,479 INFO L93 Difference]: Finished difference Result 35652 states and 51556 transitions. [2021-12-18 08:28:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 08:28:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2021-12-18 08:28:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:28:11,621 INFO L225 Difference]: With dead ends: 35652 [2021-12-18 08:28:11,621 INFO L226 Difference]: Without dead ends: 24703 [2021-12-18 08:28:11,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-18 08:28:11,754 INFO L933 BasicCegarLoop]: 2690 mSDtfsCounter, 3171 mSDsluCounter, 8157 mSDsCounter, 0 mSdLazyCounter, 4512 mSolverCounterSat, 1983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 10847 SdHoareTripleChecker+Invalid, 6495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1983 IncrementalHoareTripleChecker+Valid, 4512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:28:11,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 10847 Invalid, 6495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1983 Valid, 4512 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2021-12-18 08:28:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2021-12-18 08:28:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 21519. [2021-12-18 08:28:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21519 states, 14619 states have (on average 1.2803201313359327) internal successors, (18717), 15011 states have internal predecessors, (18717), 5545 states have call successors, (5545), 1291 states have call predecessors, (5545), 1354 states have return successors, (6350), 5556 states have call predecessors, (6350), 5544 states have call successors, (6350) [2021-12-18 08:28:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21519 states to 21519 states and 30612 transitions. [2021-12-18 08:28:12,543 INFO L78 Accepts]: Start accepts. Automaton has 21519 states and 30612 transitions. Word has length 120 [2021-12-18 08:28:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:28:12,545 INFO L470 AbstractCegarLoop]: Abstraction has 21519 states and 30612 transitions. [2021-12-18 08:28:12,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-18 08:28:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 21519 states and 30612 transitions. [2021-12-18 08:28:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-18 08:28:12,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:28:12,549 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:28:12,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 08:28:12,549 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:28:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:28:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash 55159783, now seen corresponding path program 1 times [2021-12-18 08:28:12,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:28:12,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287580276] [2021-12-18 08:28:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:12,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:28:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:28:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:28:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:28:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:28:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:28:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:28:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 08:28:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 08:28:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 08:28:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 08:28:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-18 08:28:12,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:28:12,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287580276] [2021-12-18 08:28:12,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287580276] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:28:12,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501574001] [2021-12-18 08:28:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:12,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:12,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:28:12,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:28:12,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 08:28:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:13,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:28:13,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:28:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:13,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:28:13,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501574001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:28:13,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:28:13,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-18 08:28:13,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351779150] [2021-12-18 08:28:13,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:28:13,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:28:13,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:28:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:28:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-18 08:28:13,656 INFO L87 Difference]: Start difference. First operand 21519 states and 30612 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:28:14,521 INFO L93 Difference]: Finished difference Result 53797 states and 76670 transitions. [2021-12-18 08:28:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 08:28:14,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-12-18 08:28:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:28:14,653 INFO L225 Difference]: With dead ends: 53797 [2021-12-18 08:28:14,653 INFO L226 Difference]: Without dead ends: 32299 [2021-12-18 08:28:14,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-12-18 08:28:14,810 INFO L933 BasicCegarLoop]: 2926 mSDtfsCounter, 1918 mSDsluCounter, 13568 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16494 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:28:14,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16494 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:28:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32299 states. [2021-12-18 08:28:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32299 to 32150. [2021-12-18 08:28:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 21851 states have (on average 1.2807651823715163) internal successors, (27986), 22443 states have internal predecessors, (27986), 8267 states have call successors, (8267), 1928 states have call predecessors, (8267), 2031 states have return successors, (9658), 8282 states have call predecessors, (9658), 8266 states have call successors, (9658) [2021-12-18 08:28:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 45911 transitions. [2021-12-18 08:28:15,882 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 45911 transitions. Word has length 133 [2021-12-18 08:28:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:28:15,882 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 45911 transitions. [2021-12-18 08:28:15,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 45911 transitions. [2021-12-18 08:28:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 08:28:15,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:28:15,888 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:28:15,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 08:28:16,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 08:28:16,102 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:28:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:28:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 484807700, now seen corresponding path program 1 times [2021-12-18 08:28:16,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:28:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827195496] [2021-12-18 08:28:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:16,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:28:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:28:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:28:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:28:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:28:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:28:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:28:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 08:28:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 08:28:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 08:28:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 08:28:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:16,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:28:16,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827195496] [2021-12-18 08:28:16,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827195496] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:28:16,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43693358] [2021-12-18 08:28:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:16,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:16,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:28:16,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:28:16,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 08:28:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:17,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:28:17,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:28:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:17,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:28:17,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43693358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:28:17,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:28:17,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-18 08:28:17,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673971325] [2021-12-18 08:28:17,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:28:17,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:28:17,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:28:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:28:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-18 08:28:17,401 INFO L87 Difference]: Start difference. First operand 32150 states and 45911 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:28:18,636 INFO L93 Difference]: Finished difference Result 75112 states and 107314 transitions. [2021-12-18 08:28:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 08:28:18,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2021-12-18 08:28:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:28:19,050 INFO L225 Difference]: With dead ends: 75112 [2021-12-18 08:28:19,050 INFO L226 Difference]: Without dead ends: 42983 [2021-12-18 08:28:19,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-12-18 08:28:19,169 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 1918 mSDsluCounter, 14044 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17092 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:28:19,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17092 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:28:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42983 states. [2021-12-18 08:28:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42983 to 42813. [2021-12-18 08:28:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42813 states, 29103 states have (on average 1.2807957942480157) internal successors, (37275), 29911 states have internal predecessors, (37275), 10989 states have call successors, (10989), 2565 states have call predecessors, (10989), 2720 states have return successors, (12978), 11004 states have call predecessors, (12978), 10988 states have call successors, (12978) [2021-12-18 08:28:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42813 states to 42813 states and 61242 transitions. [2021-12-18 08:28:20,780 INFO L78 Accepts]: Start accepts. Automaton has 42813 states and 61242 transitions. Word has length 134 [2021-12-18 08:28:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:28:20,781 INFO L470 AbstractCegarLoop]: Abstraction has 42813 states and 61242 transitions. [2021-12-18 08:28:20,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 42813 states and 61242 transitions. [2021-12-18 08:28:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-18 08:28:20,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:28:20,789 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:28:20,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 08:28:21,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-18 08:28:21,008 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:28:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:28:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1996562208, now seen corresponding path program 1 times [2021-12-18 08:28:21,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:28:21,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700807400] [2021-12-18 08:28:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:21,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:28:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:28:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:28:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:28:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:28:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:28:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:28:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-18 08:28:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 08:28:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:28:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 08:28:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:21,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:28:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700807400] [2021-12-18 08:28:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700807400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:28:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266098914] [2021-12-18 08:28:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:21,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:28:21,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:28:21,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 08:28:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:21,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:28:21,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:28:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:22,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:28:22,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266098914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:28:22,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:28:22,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-18 08:28:22,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238877060] [2021-12-18 08:28:22,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:28:22,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:28:22,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:28:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:28:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-18 08:28:22,174 INFO L87 Difference]: Start difference. First operand 42813 states and 61242 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:28:23,684 INFO L93 Difference]: Finished difference Result 96427 states and 137958 transitions. [2021-12-18 08:28:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 08:28:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2021-12-18 08:28:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:28:23,921 INFO L225 Difference]: With dead ends: 96427 [2021-12-18 08:28:23,922 INFO L226 Difference]: Without dead ends: 53635 [2021-12-18 08:28:24,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-12-18 08:28:24,043 INFO L933 BasicCegarLoop]: 3053 mSDtfsCounter, 1918 mSDsluCounter, 14064 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17117 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:28:24,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17117 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 08:28:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53635 states. [2021-12-18 08:28:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53635 to 42835. [2021-12-18 08:28:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42835 states, 29119 states have (on average 1.280641505546207) internal successors, (37291), 29929 states have internal predecessors, (37291), 10989 states have call successors, (10989), 2565 states have call predecessors, (10989), 2726 states have return successors, (12987), 11008 states have call predecessors, (12987), 10988 states have call successors, (12987) [2021-12-18 08:28:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42835 states to 42835 states and 61267 transitions. [2021-12-18 08:28:25,717 INFO L78 Accepts]: Start accepts. Automaton has 42835 states and 61267 transitions. Word has length 135 [2021-12-18 08:28:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:28:25,717 INFO L470 AbstractCegarLoop]: Abstraction has 42835 states and 61267 transitions. [2021-12-18 08:28:25,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 42835 states and 61267 transitions. [2021-12-18 08:28:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-18 08:28:25,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:28:25,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:28:25,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 08:28:25,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:25,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:28:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:28:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -230204179, now seen corresponding path program 1 times [2021-12-18 08:28:25,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:28:25,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738647170] [2021-12-18 08:28:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:25,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:28:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:28:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:28:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:28:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:28:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:28:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:28:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 08:28:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 08:28:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 08:28:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 08:28:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:26,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:28:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738647170] [2021-12-18 08:28:26,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738647170] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:28:26,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034014626] [2021-12-18 08:28:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:26,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:26,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:28:26,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:28:26,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 08:28:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:26,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 08:28:26,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:28:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-18 08:28:27,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 08:28:27,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034014626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:28:27,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 08:28:27,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-18 08:28:27,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19763723] [2021-12-18 08:28:27,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:28:27,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 08:28:27,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:28:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 08:28:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-18 08:28:27,210 INFO L87 Difference]: Start difference. First operand 42835 states and 61267 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:28:28,565 INFO L93 Difference]: Finished difference Result 96457 states and 137991 transitions. [2021-12-18 08:28:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 08:28:28,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 136 [2021-12-18 08:28:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:28:28,833 INFO L225 Difference]: With dead ends: 96457 [2021-12-18 08:28:28,833 INFO L226 Difference]: Without dead ends: 53643 [2021-12-18 08:28:28,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-12-18 08:28:28,987 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 1918 mSDsluCounter, 14044 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17092 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 08:28:28,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17092 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 08:28:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53643 states. [2021-12-18 08:28:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53643 to 42848. [2021-12-18 08:28:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42848 states, 29129 states have (on average 1.2805451611795804) internal successors, (37301), 29938 states have internal predecessors, (37301), 10989 states have call successors, (10989), 2565 states have call predecessors, (10989), 2729 states have return successors, (12990), 11012 states have call predecessors, (12990), 10988 states have call successors, (12990) [2021-12-18 08:28:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42848 states to 42848 states and 61280 transitions. [2021-12-18 08:28:30,732 INFO L78 Accepts]: Start accepts. Automaton has 42848 states and 61280 transitions. Word has length 136 [2021-12-18 08:28:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:28:30,732 INFO L470 AbstractCegarLoop]: Abstraction has 42848 states and 61280 transitions. [2021-12-18 08:28:30,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 08:28:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 42848 states and 61280 transitions. [2021-12-18 08:28:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 08:28:30,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:28:30,740 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:28:30,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 08:28:30,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:30,959 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:28:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:28:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash -671984421, now seen corresponding path program 1 times [2021-12-18 08:28:30,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:28:30,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028224777] [2021-12-18 08:28:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:30,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:28:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:28:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:28:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:28:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:28:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:28:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:28:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 08:28:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 08:28:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 08:28:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 08:28:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 08:28:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 08:28:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 08:28:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 08:28:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-18 08:28:31,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:28:31,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028224777] [2021-12-18 08:28:31,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028224777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:28:31,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:28:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 08:28:31,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270162791] [2021-12-18 08:28:31,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:28:31,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 08:28:31,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:28:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 08:28:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 08:28:31,189 INFO L87 Difference]: Start difference. First operand 42848 states and 61280 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 08:28:39,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:28:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:28:39,742 INFO L93 Difference]: Finished difference Result 59568 states and 84848 transitions. [2021-12-18 08:28:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:28:39,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2021-12-18 08:28:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:28:39,977 INFO L225 Difference]: With dead ends: 59568 [2021-12-18 08:28:39,977 INFO L226 Difference]: Without dead ends: 59565 [2021-12-18 08:28:40,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:28:40,018 INFO L933 BasicCegarLoop]: 1885 mSDtfsCounter, 2383 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 1479 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:28:40,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2531 Valid, 4032 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1479 Valid, 1656 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-18 08:28:40,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59565 states. [2021-12-18 08:28:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59565 to 53178. [2021-12-18 08:28:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53178 states, 35623 states have (on average 1.2636218173651854) internal successors, (45014), 36461 states have internal predecessors, (45014), 13768 states have call successors, (13768), 3622 states have call predecessors, (13768), 3786 states have return successors, (15769), 13791 states have call predecessors, (15769), 13767 states have call successors, (15769) [2021-12-18 08:28:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53178 states to 53178 states and 74551 transitions. [2021-12-18 08:28:41,940 INFO L78 Accepts]: Start accepts. Automaton has 53178 states and 74551 transitions. Word has length 158 [2021-12-18 08:28:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:28:41,943 INFO L470 AbstractCegarLoop]: Abstraction has 53178 states and 74551 transitions. [2021-12-18 08:28:41,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-18 08:28:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 53178 states and 74551 transitions. [2021-12-18 08:28:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-18 08:28:41,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:28:41,963 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:28:41,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 08:28:41,964 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:28:41,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:28:41,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1871562796, now seen corresponding path program 1 times [2021-12-18 08:28:41,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:28:41,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616261416] [2021-12-18 08:28:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:41,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:28:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:28:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:28:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:28:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:28:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:28:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 08:28:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:28:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 08:28:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 08:28:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 08:28:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 08:28:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 08:28:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 08:28:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:28:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 08:28:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 08:28:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 08:28:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 08:28:42,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:28:42,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616261416] [2021-12-18 08:28:42,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616261416] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 08:28:42,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45947135] [2021-12-18 08:28:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:28:42,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 08:28:42,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:28:42,289 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 08:28:42,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 08:28:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:28:42,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2369 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-18 08:28:42,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 08:28:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-18 08:28:43,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 08:28:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-18 08:28:43,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45947135] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 08:28:43,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 08:28:43,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-12-18 08:28:43,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076825500] [2021-12-18 08:28:43,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 08:28:43,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-18 08:28:43,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:28:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-18 08:28:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-12-18 08:28:43,657 INFO L87 Difference]: Start difference. First operand 53178 states and 74551 transitions. Second operand has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-12-18 08:29:27,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:29:29,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:29:55,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:30:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:30:16,095 INFO L93 Difference]: Finished difference Result 157238 states and 223224 transitions. [2021-12-18 08:30:16,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-12-18 08:30:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 182 [2021-12-18 08:30:16,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:30:16,616 INFO L225 Difference]: With dead ends: 157238 [2021-12-18 08:30:16,617 INFO L226 Difference]: Without dead ends: 103885 [2021-12-18 08:30:16,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7603 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3129, Invalid=17177, Unknown=0, NotChecked=0, Total=20306 [2021-12-18 08:30:16,839 INFO L933 BasicCegarLoop]: 3575 mSDtfsCounter, 15014 mSDsluCounter, 26486 mSDsCounter, 0 mSdLazyCounter, 49690 mSolverCounterSat, 12489 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15500 SdHoareTripleChecker+Valid, 30061 SdHoareTripleChecker+Invalid, 62180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 12489 IncrementalHoareTripleChecker+Valid, 49690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.7s IncrementalHoareTripleChecker+Time [2021-12-18 08:30:16,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15500 Valid, 30061 Invalid, 62180 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [12489 Valid, 49690 Invalid, 1 Unknown, 0 Unchecked, 82.7s Time] [2021-12-18 08:30:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103885 states.