./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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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--isdn--hardware--mISDN--w6692.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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:14:42,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:14:42,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:14:42,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:14:42,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:14:42,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:14:42,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:14:42,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:14:42,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:14:42,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:14:42,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:14:42,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:14:42,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:14:42,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:14:42,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:14:42,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:14:42,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:14:42,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:14:42,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:14:42,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:14:42,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:14:42,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:14:42,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:14:42,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:14:42,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:14:42,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:14:42,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:14:42,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:14:42,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:14:42,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:14:42,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:14:42,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:14:42,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:14:42,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:14:42,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:14:42,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:14:42,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:14:42,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:14:42,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:14:42,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:14:42,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:14:42,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:14:42,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:14:42,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:14:42,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:14:42,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:14:42,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:14:42,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:14:42,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:14:42,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:14:42,248 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:14:42,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:14:42,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:14:42,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:14:42,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:14:42,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:14:42,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:14:42,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:14:42,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:14:42,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:14:42,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:14:42,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2021-12-14 18:14:42,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:14:42,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:14:42,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:14:42,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:14:42,470 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:14:42,471 INFO L432 ainManager$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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-12-14 18:14:42,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2a181b0/29bcf5f095a14cd3b176b87cb74fde1c/FLAG87e01a8c1 [2021-12-14 18:14:43,192 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:14:43,193 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-12-14 18:14:43,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2a181b0/29bcf5f095a14cd3b176b87cb74fde1c/FLAG87e01a8c1 [2021-12-14 18:14:43,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2a181b0/29bcf5f095a14cd3b176b87cb74fde1c [2021-12-14 18:14:43,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:14:43,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:14:43,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:14:43,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:14:43,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:14:43,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:14:43" (1/1) ... [2021-12-14 18:14:43,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77be07dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:43, skipping insertion in model container [2021-12-14 18:14:43,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:14:43" (1/1) ... [2021-12-14 18:14:43,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:14:43,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:14:44,670 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2021-12-14 18:14:44,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:14:44,736 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:14:45,035 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2021-12-14 18:14:45,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:14:45,102 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:14:45,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45 WrapperNode [2021-12-14 18:14:45,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:14:45,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:14:45,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:14:45,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:14:45,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,267 INFO L137 Inliner]: procedures = 228, calls = 2012, calls flagged for inlining = 106, calls inlined = 86, statements flattened = 2889 [2021-12-14 18:14:45,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:14:45,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:14:45,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:14:45,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:14:45,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:14:45,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:14:45,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:14:45,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:14:45,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (1/1) ... [2021-12-14 18:14:45,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:14:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:14:45,451 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) [2021-12-14 18:14:45,462 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 [2021-12-14 18:14:45,478 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2021-12-14 18:14:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2021-12-14 18:14:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692 [2021-12-14 18:14:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692 [2021-12-14 18:14:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_clear_bchannel [2021-12-14 18:14:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_clear_bchannel [2021-12-14 18:14:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:14:45,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:14:45,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:14:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:14:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:14:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:14:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:14:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:14:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_unregister_device [2021-12-14 18:14:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_unregister_device [2021-12-14 18:14:45,480 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692 [2021-12-14 18:14:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692 [2021-12-14 18:14:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure W6692B_interrupt [2021-12-14 18:14:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692B_interrupt [2021-12-14 18:14:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 18:14:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 18:14:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure outsb [2021-12-14 18:14:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure outsb [2021-12-14 18:14:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:14:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:14:45,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:14:45,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:14:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Bfifo [2021-12-14 18:14:45,482 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Bfifo [2021-12-14 18:14:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-14 18:14:45,482 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-14 18:14:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Bfifo [2021-12-14 18:14:45,482 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Bfifo [2021-12-14 18:14:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692B [2021-12-14 18:14:45,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692B [2021-12-14 18:14:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 18:14:45,483 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 18:14:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Dfifo [2021-12-14 18:14:45,483 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Dfifo [2021-12-14 18:14:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:14:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:14:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:14:45,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:14:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:14:45,484 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:14:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:14:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:14:45,485 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 18:14:45,485 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 18:14:45,485 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_led_handler [2021-12-14 18:14:45,485 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_led_handler [2021-12-14 18:14:45,485 INFO L130 BoogieDeclarations]: Found specification of procedure send_next [2021-12-14 18:14:45,485 INFO L138 BoogieDeclarations]: Found implementation of procedure send_next [2021-12-14 18:14:45,486 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:14:45,486 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:14:45,486 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 18:14:45,487 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 18:14:45,487 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692B [2021-12-14 18:14:45,487 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692B [2021-12-14 18:14:45,487 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel [2021-12-14 18:14:45,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel [2021-12-14 18:14:45,487 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel [2021-12-14 18:14:45,487 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel [2021-12-14 18:14:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:14:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure ph_command [2021-12-14 18:14:45,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_command [2021-12-14 18:14:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 18:14:45,488 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 18:14:45,488 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-14 18:14:45,489 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-14 18:14:45,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:14:45,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:14:45,489 INFO L130 BoogieDeclarations]: Found specification of procedure _set_debug [2021-12-14 18:14:45,489 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_debug [2021-12-14 18:14:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-14 18:14:45,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-14 18:14:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:14:45,490 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:14:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-14 18:14:45,490 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-14 18:14:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwirq [2021-12-14 18:14:45,490 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwirq [2021-12-14 18:14:45,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:14:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_probe [2021-12-14 18:14:45,491 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_probe [2021-12-14 18:14:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 18:14:45,491 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 18:14:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-12-14 18:14:45,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-12-14 18:14:45,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:14:45,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:14:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:14:45,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:14:45,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:14:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-14 18:14:45,493 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-14 18:14:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2021-12-14 18:14:45,493 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2021-12-14 18:14:45,493 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-14 18:14:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-14 18:14:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:14:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure recv_Bchannel [2021-12-14 18:14:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure recv_Bchannel [2021-12-14 18:14:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2021-12-14 18:14:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2021-12-14 18:14:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:14:45,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:14:45,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:14:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2021-12-14 18:14:45,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2021-12-14 18:14:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2021-12-14 18:14:45,495 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2021-12-14 18:14:45,495 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Dfifo [2021-12-14 18:14:45,495 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Dfifo [2021-12-14 18:14:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_mode [2021-12-14 18:14:45,496 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_mode [2021-12-14 18:14:45,496 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_dframe [2021-12-14 18:14:45,497 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_dframe [2021-12-14 18:14:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure mI_alloc_skb [2021-12-14 18:14:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mI_alloc_skb [2021-12-14 18:14:45,498 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 18:14:45,498 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 18:14:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event [2021-12-14 18:14:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event [2021-12-14 18:14:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:14:45,500 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:14:45,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-12-14 18:14:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-12-14 18:14:45,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:14:45,504 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-14 18:14:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-14 18:14:45,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:14:45,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:14:46,010 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:14:46,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:14:46,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:14:47,846 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:14:47,862 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:14:47,862 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:14:47,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:14:47 BoogieIcfgContainer [2021-12-14 18:14:47,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:14:47,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:14:47,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:14:47,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:14:47,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:14:43" (1/3) ... [2021-12-14 18:14:47,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d9ef1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:14:47, skipping insertion in model container [2021-12-14 18:14:47,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:14:45" (2/3) ... [2021-12-14 18:14:47,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d9ef1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:14:47, skipping insertion in model container [2021-12-14 18:14:47,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:14:47" (3/3) ... [2021-12-14 18:14:47,870 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-12-14 18:14:47,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:14:47,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:14:47,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:14:47,911 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 [2021-12-14 18:14:47,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:14:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 1007 states, 679 states have (on average 1.337260677466863) internal successors, (908), 713 states have internal predecessors, (908), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) [2021-12-14 18:14:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 18:14:47,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:47,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:14:47,943 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:47,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1333373833, now seen corresponding path program 1 times [2021-12-14 18:14:47,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:47,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200181716] [2021-12-14 18:14:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:47,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-14 18:14:48,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:48,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200181716] [2021-12-14 18:14:48,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200181716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:48,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:48,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:14:48,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023707553] [2021-12-14 18:14:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:48,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:14:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:14:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:14:48,534 INFO L87 Difference]: Start difference. First operand has 1007 states, 679 states have (on average 1.337260677466863) internal successors, (908), 713 states have internal predecessors, (908), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 18:14:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:14:50,632 INFO L93 Difference]: Finished difference Result 2036 states and 2922 transitions. [2021-12-14 18:14:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:14:50,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2021-12-14 18:14:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:14:50,646 INFO L225 Difference]: With dead ends: 2036 [2021-12-14 18:14:50,646 INFO L226 Difference]: Without dead ends: 1017 [2021-12-14 18:14:50,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:14:50,654 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 173 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:14:50,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 2692 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 18:14:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-12-14 18:14:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 990. [2021-12-14 18:14:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 670 states have (on average 1.326865671641791) internal successors, (889), 696 states have internal predecessors, (889), 260 states have call successors, (260), 60 states have call predecessors, (260), 59 states have return successors, (259), 253 states have call predecessors, (259), 259 states have call successors, (259) [2021-12-14 18:14:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1408 transitions. [2021-12-14 18:14:50,730 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1408 transitions. Word has length 63 [2021-12-14 18:14:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:50,730 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1408 transitions. [2021-12-14 18:14:50,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 18:14:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1408 transitions. [2021-12-14 18:14:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 18:14:50,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:50,733 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:14:50,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:14:50,733 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1007049039, now seen corresponding path program 1 times [2021-12-14 18:14:50,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:50,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012712306] [2021-12-14 18:14:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:50,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-14 18:14:50,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012712306] [2021-12-14 18:14:50,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012712306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:50,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:50,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:14:50,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965674371] [2021-12-14 18:14:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:50,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:14:50,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:14:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:14:50,916 INFO L87 Difference]: Start difference. First operand 990 states and 1408 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 18:14:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:14:52,959 INFO L93 Difference]: Finished difference Result 2658 states and 3786 transitions. [2021-12-14 18:14:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:14:52,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2021-12-14 18:14:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:14:52,967 INFO L225 Difference]: With dead ends: 2658 [2021-12-14 18:14:52,968 INFO L226 Difference]: Without dead ends: 1677 [2021-12-14 18:14:52,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:14:52,972 INFO L933 BasicCegarLoop]: 1553 mSDtfsCounter, 1293 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 3492 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:14:52,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1432 Valid, 3492 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 18:14:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2021-12-14 18:14:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1624. [2021-12-14 18:14:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1110 states have (on average 1.3423423423423424) internal successors, (1490), 1160 states have internal predecessors, (1490), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2021-12-14 18:14:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2315 transitions. [2021-12-14 18:14:53,037 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2315 transitions. Word has length 63 [2021-12-14 18:14:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:53,037 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2315 transitions. [2021-12-14 18:14:53,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 18:14:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2315 transitions. [2021-12-14 18:14:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 18:14:53,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:53,041 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-14 18:14:53,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:14:53,041 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash -303802206, now seen corresponding path program 1 times [2021-12-14 18:14:53,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:53,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392146288] [2021-12-14 18:14:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:53,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 18:14:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 18:14:53,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:53,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392146288] [2021-12-14 18:14:53,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392146288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:53,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:53,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:14:53,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857138967] [2021-12-14 18:14:53,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:53,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:14:53,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:14:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:14:53,219 INFO L87 Difference]: Start difference. First operand 1624 states and 2315 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 18:14:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:14:55,356 INFO L93 Difference]: Finished difference Result 3279 states and 4680 transitions. [2021-12-14 18:14:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:14:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2021-12-14 18:14:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:14:55,419 INFO L225 Difference]: With dead ends: 3279 [2021-12-14 18:14:55,419 INFO L226 Difference]: Without dead ends: 1673 [2021-12-14 18:14:55,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:14:55,424 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 171 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:14:55,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 3890 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 18:14:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-12-14 18:14:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1624. [2021-12-14 18:14:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1110 states have (on average 1.3414414414414415) internal successors, (1489), 1160 states have internal predecessors, (1489), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2021-12-14 18:14:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2314 transitions. [2021-12-14 18:14:55,474 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2314 transitions. Word has length 93 [2021-12-14 18:14:55,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:55,475 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2314 transitions. [2021-12-14 18:14:55,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 18:14:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2314 transitions. [2021-12-14 18:14:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-14 18:14:55,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:55,481 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-14 18:14:55,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:14:55,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:55,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash -822775061, now seen corresponding path program 1 times [2021-12-14 18:14:55,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:55,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966982153] [2021-12-14 18:14:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 18:14:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 18:14:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-14 18:14:55,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966982153] [2021-12-14 18:14:55,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966982153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:55,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:55,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:14:55,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213680067] [2021-12-14 18:14:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:55,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:14:55,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:14:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:14:55,767 INFO L87 Difference]: Start difference. First operand 1624 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 18:14:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:14:57,986 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2021-12-14 18:14:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:14:57,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2021-12-14 18:14:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:14:57,994 INFO L225 Difference]: With dead ends: 1712 [2021-12-14 18:14:57,995 INFO L226 Difference]: Without dead ends: 1709 [2021-12-14 18:14:57,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:14:57,999 INFO L933 BasicCegarLoop]: 1376 mSDtfsCounter, 556 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:14:58,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 3508 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 18:14:58,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2021-12-14 18:14:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1658. [2021-12-14 18:14:58,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1658 states, 1133 states have (on average 1.3353927625772286) internal successors, (1513), 1183 states have internal predecessors, (1513), 416 states have call successors, (416), 109 states have call predecessors, (416), 108 states have return successors, (415), 403 states have call predecessors, (415), 415 states have call successors, (415) [2021-12-14 18:14:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2344 transitions. [2021-12-14 18:14:58,092 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2344 transitions. Word has length 110 [2021-12-14 18:14:58,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:14:58,093 INFO L470 AbstractCegarLoop]: Abstraction has 1658 states and 2344 transitions. [2021-12-14 18:14:58,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 18:14:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2344 transitions. [2021-12-14 18:14:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-14 18:14:58,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:14:58,098 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:14:58,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:14:58,100 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:14:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:14:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1844805629, now seen corresponding path program 1 times [2021-12-14 18:14:58,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:14:58,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303556113] [2021-12-14 18:14:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:14:58,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:14:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:14:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:14:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:14:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:14:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-14 18:14:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 18:14:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:14:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:14:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 18:14:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:14:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:14:58,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:14:58,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303556113] [2021-12-14 18:14:58,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303556113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:14:58,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:14:58,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:14:58,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422008023] [2021-12-14 18:14:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:14:58,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:14:58,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:14:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:14:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:14:58,360 INFO L87 Difference]: Start difference. First operand 1658 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:03,833 INFO L93 Difference]: Finished difference Result 5090 states and 7224 transitions. [2021-12-14 18:15:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:15:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 111 [2021-12-14 18:15:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:03,849 INFO L225 Difference]: With dead ends: 5090 [2021-12-14 18:15:03,849 INFO L226 Difference]: Without dead ends: 3455 [2021-12-14 18:15:03,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-12-14 18:15:03,855 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 2326 mSDsluCounter, 4312 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 1569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1569 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:15:03,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2576 Valid, 5756 Invalid, 5888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1569 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-14 18:15:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2021-12-14 18:15:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3338. [2021-12-14 18:15:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 2276 states have (on average 1.3339191564147628) internal successors, (3036), 2378 states have internal predecessors, (3036), 844 states have call successors, (844), 216 states have call predecessors, (844), 217 states have return successors, (850), 819 states have call predecessors, (850), 843 states have call successors, (850) [2021-12-14 18:15:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4730 transitions. [2021-12-14 18:15:03,956 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4730 transitions. Word has length 111 [2021-12-14 18:15:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:03,957 INFO L470 AbstractCegarLoop]: Abstraction has 3338 states and 4730 transitions. [2021-12-14 18:15:03,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4730 transitions. [2021-12-14 18:15:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-14 18:15:03,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:03,961 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:15:03,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:15:03,961 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1092190682, now seen corresponding path program 1 times [2021-12-14 18:15:03,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:03,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362061318] [2021-12-14 18:15:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:03,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:15:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 18:15:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 18:15:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:15:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:04,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:04,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362061318] [2021-12-14 18:15:04,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362061318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:04,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:15:04,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:15:04,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439920716] [2021-12-14 18:15:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:04,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:15:04,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:04,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:15:04,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:15:04,171 INFO L87 Difference]: Start difference. First operand 3338 states and 4730 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:09,371 INFO L93 Difference]: Finished difference Result 10212 states and 14494 transitions. [2021-12-14 18:15:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:15:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2021-12-14 18:15:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:09,401 INFO L225 Difference]: With dead ends: 10212 [2021-12-14 18:15:09,401 INFO L226 Difference]: Without dead ends: 6897 [2021-12-14 18:15:09,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-12-14 18:15:09,415 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 2326 mSDsluCounter, 4312 mSDsCounter, 0 mSdLazyCounter, 4314 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 5753 SdHoareTripleChecker+Invalid, 5886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 4314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:15:09,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2575 Valid, 5753 Invalid, 5886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1572 Valid, 4314 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-14 18:15:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6897 states. [2021-12-14 18:15:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6897 to 6666. [2021-12-14 18:15:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 4548 states have (on average 1.3326737027264732) internal successors, (6061), 4752 states have internal predecessors, (6061), 1682 states have call successors, (1682), 432 states have call predecessors, (1682), 435 states have return successors, (1707), 1633 states have call predecessors, (1707), 1681 states have call successors, (1707) [2021-12-14 18:15:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 9450 transitions. [2021-12-14 18:15:09,625 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 9450 transitions. Word has length 109 [2021-12-14 18:15:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:09,627 INFO L470 AbstractCegarLoop]: Abstraction has 6666 states and 9450 transitions. [2021-12-14 18:15:09,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 9450 transitions. [2021-12-14 18:15:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-14 18:15:09,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:09,629 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:15:09,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 18:15:09,630 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash -510546839, now seen corresponding path program 1 times [2021-12-14 18:15:09,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:09,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533882642] [2021-12-14 18:15:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:09,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 18:15:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 18:15:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:15:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:15:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:09,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:09,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533882642] [2021-12-14 18:15:09,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533882642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:09,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:15:09,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:15:09,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501341333] [2021-12-14 18:15:09,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:09,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:15:09,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:15:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:15:09,913 INFO L87 Difference]: Start difference. First operand 6666 states and 9450 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:14,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:14,856 INFO L93 Difference]: Finished difference Result 20446 states and 29007 transitions. [2021-12-14 18:15:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:15:14,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2021-12-14 18:15:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:14,917 INFO L225 Difference]: With dead ends: 20446 [2021-12-14 18:15:14,917 INFO L226 Difference]: Without dead ends: 13803 [2021-12-14 18:15:14,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-12-14 18:15:14,944 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 2319 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 4298 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2568 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 5934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 4298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:15:14,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2568 Valid, 5436 Invalid, 5934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 4298 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-14 18:15:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13803 states. [2021-12-14 18:15:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13803 to 13344. [2021-12-14 18:15:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 9110 states have (on average 1.3313940724478595) internal successors, (12129), 9518 states have internal predecessors, (12129), 3358 states have call successors, (3358), 868 states have call predecessors, (3358), 875 states have return successors, (3438), 3261 states have call predecessors, (3438), 3357 states have call successors, (3438) [2021-12-14 18:15:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18925 transitions. [2021-12-14 18:15:15,431 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18925 transitions. Word has length 110 [2021-12-14 18:15:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:15,431 INFO L470 AbstractCegarLoop]: Abstraction has 13344 states and 18925 transitions. [2021-12-14 18:15:15,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:15,431 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18925 transitions. [2021-12-14 18:15:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-14 18:15:15,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:15,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:15:15,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 18:15:15,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:15,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:15,434 INFO L85 PathProgramCache]: Analyzing trace with hash -641074778, now seen corresponding path program 1 times [2021-12-14 18:15:15,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:15,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028860137] [2021-12-14 18:15:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:15,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 18:15:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 18:15:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 18:15:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 18:15:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:15,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028860137] [2021-12-14 18:15:15,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028860137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:15,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:15:15,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:15:15,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320569423] [2021-12-14 18:15:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:15,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:15:15,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:15:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:15:15,602 INFO L87 Difference]: Start difference. First operand 13344 states and 18925 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:20,957 INFO L93 Difference]: Finished difference Result 39837 states and 56483 transitions. [2021-12-14 18:15:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:15:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2021-12-14 18:15:20,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:21,216 INFO L225 Difference]: With dead ends: 39837 [2021-12-14 18:15:21,229 INFO L226 Difference]: Without dead ends: 26516 [2021-12-14 18:15:21,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2021-12-14 18:15:21,346 INFO L933 BasicCegarLoop]: 2063 mSDtfsCounter, 2100 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 1662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 6839 SdHoareTripleChecker+Invalid, 6122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1662 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:15:21,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 6839 Invalid, 6122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1662 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-14 18:15:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26516 states. [2021-12-14 18:15:22,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26516 to 25443. [2021-12-14 18:15:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25443 states, 17362 states have (on average 1.3309526552240525) internal successors, (23108), 18170 states have internal predecessors, (23108), 6403 states have call successors, (6403), 1662 states have call predecessors, (6403), 1677 states have return successors, (6631), 6182 states have call predecessors, (6631), 6402 states have call successors, (6631) [2021-12-14 18:15:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25443 states to 25443 states and 36142 transitions. [2021-12-14 18:15:22,569 INFO L78 Accepts]: Start accepts. Automaton has 25443 states and 36142 transitions. Word has length 108 [2021-12-14 18:15:22,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:22,570 INFO L470 AbstractCegarLoop]: Abstraction has 25443 states and 36142 transitions. [2021-12-14 18:15:22,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:15:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 25443 states and 36142 transitions. [2021-12-14 18:15:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 18:15:22,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:22,573 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-12-14 18:15:22,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 18:15:22,573 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1433760259, now seen corresponding path program 1 times [2021-12-14 18:15:22,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:22,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969582708] [2021-12-14 18:15:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:22,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:15:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:15:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:15:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 18:15:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:15:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 18:15:22,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:22,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969582708] [2021-12-14 18:15:22,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969582708] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:15:22,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524627511] [2021-12-14 18:15:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:22,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:15:22,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:15:22,912 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) [2021-12-14 18:15:22,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 18:15:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:23,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 3034 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:15:23,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:15:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:23,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:15:23,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524627511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:23,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:15:23,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-14 18:15:23,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100053055] [2021-12-14 18:15:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:23,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:15:23,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:15:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-14 18:15:23,698 INFO L87 Difference]: Start difference. First operand 25443 states and 36142 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:24,602 INFO L93 Difference]: Finished difference Result 63403 states and 90066 transitions. [2021-12-14 18:15:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:15:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-12-14 18:15:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:24,766 INFO L225 Difference]: With dead ends: 63403 [2021-12-14 18:15:24,767 INFO L226 Difference]: Without dead ends: 37983 [2021-12-14 18:15:24,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-12-14 18:15:24,852 INFO L933 BasicCegarLoop]: 2308 mSDtfsCounter, 1429 mSDsluCounter, 10623 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 12931 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:15:24,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 12931 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:15:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37983 states. [2021-12-14 18:15:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37983 to 33770. [2021-12-14 18:15:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33770 states, 23105 states have (on average 1.3281973598788142) internal successors, (30688), 24133 states have internal predecessors, (30688), 8428 states have call successors, (8428), 2197 states have call predecessors, (8428), 2236 states have return successors, (8863), 8153 states have call predecessors, (8863), 8427 states have call successors, (8863) [2021-12-14 18:15:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33770 states to 33770 states and 47979 transitions. [2021-12-14 18:15:26,082 INFO L78 Accepts]: Start accepts. Automaton has 33770 states and 47979 transitions. Word has length 121 [2021-12-14 18:15:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:26,083 INFO L470 AbstractCegarLoop]: Abstraction has 33770 states and 47979 transitions. [2021-12-14 18:15:26,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 33770 states and 47979 transitions. [2021-12-14 18:15:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-14 18:15:26,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:26,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:15:26,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 18:15:26,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:15:26,306 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1146089900, now seen corresponding path program 1 times [2021-12-14 18:15:26,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:26,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457099349] [2021-12-14 18:15:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:26,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 18:15:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 18:15:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:15:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:15:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 18:15:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:26,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:26,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457099349] [2021-12-14 18:15:26,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457099349] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:15:26,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754435179] [2021-12-14 18:15:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:26,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:15:26,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:15:26,622 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) [2021-12-14 18:15:26,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 18:15:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:27,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:15:27,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:15:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:27,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:15:27,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754435179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:27,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:15:27,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-14 18:15:27,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038775682] [2021-12-14 18:15:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:27,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:15:27,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:15:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-14 18:15:27,562 INFO L87 Difference]: Start difference. First operand 33770 states and 47979 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:28,808 INFO L93 Difference]: Finished difference Result 84081 states and 119456 transitions. [2021-12-14 18:15:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:15:28,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 122 [2021-12-14 18:15:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:29,023 INFO L225 Difference]: With dead ends: 84081 [2021-12-14 18:15:29,023 INFO L226 Difference]: Without dead ends: 50334 [2021-12-14 18:15:29,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-14 18:15:29,126 INFO L933 BasicCegarLoop]: 2385 mSDtfsCounter, 1429 mSDsluCounter, 10919 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 13304 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 [2021-12-14 18:15:29,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 13304 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:15:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50334 states. [2021-12-14 18:15:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50334 to 42137. [2021-12-14 18:15:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42137 states, 28872 states have (on average 1.326267664172901) internal successors, (38292), 30144 states have internal predecessors, (38292), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2811 states have return successors, (11103), 10116 states have call predecessors, (11103), 10452 states have call successors, (11103) [2021-12-14 18:15:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42137 states to 42137 states and 59848 transitions. [2021-12-14 18:15:30,747 INFO L78 Accepts]: Start accepts. Automaton has 42137 states and 59848 transitions. Word has length 122 [2021-12-14 18:15:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:30,748 INFO L470 AbstractCegarLoop]: Abstraction has 42137 states and 59848 transitions. [2021-12-14 18:15:30,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 42137 states and 59848 transitions. [2021-12-14 18:15:30,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 18:15:30,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:30,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:15:30,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 18:15:30,971 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,SelfDestructingSolverStorable9 [2021-12-14 18:15:30,972 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:30,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1389366230, now seen corresponding path program 1 times [2021-12-14 18:15:30,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:30,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747504977] [2021-12-14 18:15:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:30,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 18:15:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 18:15:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:15:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:15:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 18:15:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:31,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:31,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747504977] [2021-12-14 18:15:31,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747504977] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:15:31,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116255359] [2021-12-14 18:15:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:31,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:15:31,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:15:31,208 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) [2021-12-14 18:15:31,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 18:15:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:31,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:15:31,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:15:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:31,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:15:31,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116255359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:31,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:15:31,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-14 18:15:31,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284573323] [2021-12-14 18:15:31,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:31,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:15:31,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:31,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:15:31,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-14 18:15:31,985 INFO L87 Difference]: Start difference. First operand 42137 states and 59848 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:33,386 INFO L93 Difference]: Finished difference Result 100796 states and 143164 transitions. [2021-12-14 18:15:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:15:33,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 123 [2021-12-14 18:15:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:33,734 INFO L225 Difference]: With dead ends: 100796 [2021-12-14 18:15:33,735 INFO L226 Difference]: Without dead ends: 58682 [2021-12-14 18:15:33,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-14 18:15:33,843 INFO L933 BasicCegarLoop]: 2389 mSDtfsCounter, 1429 mSDsluCounter, 10935 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 13324 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 [2021-12-14 18:15:33,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 13324 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:15:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58682 states. [2021-12-14 18:15:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58682 to 42169. [2021-12-14 18:15:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42169 states, 28896 states have (on average 1.3259966777408638) internal successors, (38316), 30168 states have internal predecessors, (38316), 10453 states have call successors, (10453), 2732 states have call predecessors, (10453), 2819 states have return successors, (11115), 10124 states have call predecessors, (11115), 10452 states have call successors, (11115) [2021-12-14 18:15:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42169 states to 42169 states and 59884 transitions. [2021-12-14 18:15:35,338 INFO L78 Accepts]: Start accepts. Automaton has 42169 states and 59884 transitions. Word has length 123 [2021-12-14 18:15:35,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:15:35,338 INFO L470 AbstractCegarLoop]: Abstraction has 42169 states and 59884 transitions. [2021-12-14 18:15:35,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 42169 states and 59884 transitions. [2021-12-14 18:15:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-14 18:15:35,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:15:35,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:15:35,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 18:15:35,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:15:35,555 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:15:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:15:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2081669403, now seen corresponding path program 1 times [2021-12-14 18:15:35,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:15:35,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42111692] [2021-12-14 18:15:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:35,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:15:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:15:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:15:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:15:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:15:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 18:15:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 18:15:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:15:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:15:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 18:15:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:15:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:35,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:15:35,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42111692] [2021-12-14 18:15:35,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42111692] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:15:35,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803494112] [2021-12-14 18:15:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:15:35,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:15:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:15:35,773 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) [2021-12-14 18:15:35,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 18:15:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:15:36,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:15:36,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:15:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 18:15:36,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:15:36,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803494112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:15:36,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:15:36,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-14 18:15:36,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363617584] [2021-12-14 18:15:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:15:36,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:15:36,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:15:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:15:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-14 18:15:36,708 INFO L87 Difference]: Start difference. First operand 42169 states and 59884 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:15:38,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:15:38,057 INFO L93 Difference]: Finished difference Result 100844 states and 143216 transitions. [2021-12-14 18:15:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:15:38,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 124 [2021-12-14 18:15:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:15:38,435 INFO L225 Difference]: With dead ends: 100844 [2021-12-14 18:15:38,435 INFO L226 Difference]: Without dead ends: 58698 [2021-12-14 18:15:38,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-14 18:15:38,543 INFO L933 BasicCegarLoop]: 2389 mSDtfsCounter, 1429 mSDsluCounter, 10935 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 13324 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 [2021-12-14 18:15:38,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 13324 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:15:38,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58698 states.