./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/ntdrivers/parport.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 08:35:34,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 08:35:34,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 08:35:34,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 08:35:34,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 08:35:34,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 08:35:34,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 08:35:34,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 08:35:34,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 08:35:34,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 08:35:34,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 08:35:34,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 08:35:34,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 08:35:34,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 08:35:34,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 08:35:34,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 08:35:34,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 08:35:34,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 08:35:34,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 08:35:34,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 08:35:34,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 08:35:34,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 08:35:34,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 08:35:34,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 08:35:34,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 08:35:34,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 08:35:34,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 08:35:34,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 08:35:34,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 08:35:34,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 08:35:34,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 08:35:34,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 08:35:34,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 08:35:34,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 08:35:34,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 08:35:34,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 08:35:34,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 08:35:34,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 08:35:34,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 08:35:34,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 08:35:34,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 08:35:34,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 08:35:34,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 08:35:34,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 08:35:34,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 08:35:34,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 08:35:34,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 08:35:34,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 08:35:34,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 08:35:34,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 08:35:34,401 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 08:35:34,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 08:35:34,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 08:35:34,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 08:35:34,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 08:35:34,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 08:35:34,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 08:35:34,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 08:35:34,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 08:35:34,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 08:35:34,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 08:35:34,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 08:35:34,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 08:35:34,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 08:35:34,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 08:35:34,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 08:35:34,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:35:34,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 08:35:34,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 08:35:34,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 08:35:34,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 08:35:34,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 08:35:34,405 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 08:35:34,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 08:35:34,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 08:35:34,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 08:35:34,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2021-12-22 08:35:34,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 08:35:34,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 08:35:34,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 08:35:34,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 08:35:34,637 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 08:35:34,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2021-12-22 08:35:34,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66f17cd3/1450320529dc4812be7ff3303030d656/FLAGdf1462cc6 [2021-12-22 08:35:35,274 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 08:35:35,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2021-12-22 08:35:35,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66f17cd3/1450320529dc4812be7ff3303030d656/FLAGdf1462cc6 [2021-12-22 08:35:35,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66f17cd3/1450320529dc4812be7ff3303030d656 [2021-12-22 08:35:35,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 08:35:35,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 08:35:35,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 08:35:35,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 08:35:35,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 08:35:35,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:35" (1/1) ... [2021-12-22 08:35:35,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c659e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:35, skipping insertion in model container [2021-12-22 08:35:35,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:35" (1/1) ... [2021-12-22 08:35:35,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 08:35:35,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 08:35:36,084 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/ntdrivers/parport.i.cil-2.c[86591,86604] [2021-12-22 08:35:36,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:35:36,632 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 08:35:36,702 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/ntdrivers/parport.i.cil-2.c[86591,86604] [2021-12-22 08:35:36,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:35:36,929 INFO L208 MainTranslator]: Completed translation [2021-12-22 08:35:36,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36 WrapperNode [2021-12-22 08:35:36,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 08:35:36,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 08:35:36,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 08:35:36,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 08:35:36,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,145 INFO L137 Inliner]: procedures = 248, calls = 2334, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4663 [2021-12-22 08:35:37,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 08:35:37,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 08:35:37,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 08:35:37,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 08:35:37,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 08:35:37,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 08:35:37,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 08:35:37,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 08:35:37,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (1/1) ... [2021-12-22 08:35:37,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:35:37,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:35:37,395 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) [2021-12-22 08:35:37,415 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 [2021-12-22 08:35:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2021-12-22 08:35:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2021-12-22 08:35:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2021-12-22 08:35:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2021-12-22 08:35:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2021-12-22 08:35:37,437 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2021-12-22 08:35:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2021-12-22 08:35:37,438 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2021-12-22 08:35:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2021-12-22 08:35:37,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2021-12-22 08:35:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 08:35:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 08:35:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2021-12-22 08:35:37,438 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2021-12-22 08:35:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2021-12-22 08:35:37,438 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2021-12-22 08:35:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2021-12-22 08:35:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2021-12-22 08:35:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 08:35:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 08:35:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2021-12-22 08:35:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2021-12-22 08:35:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 08:35:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 08:35:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-22 08:35:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-22 08:35:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2021-12-22 08:35:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2021-12-22 08:35:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2021-12-22 08:35:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2021-12-22 08:35:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 08:35:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2021-12-22 08:35:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2021-12-22 08:35:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2021-12-22 08:35:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2021-12-22 08:35:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 08:35:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2021-12-22 08:35:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2021-12-22 08:35:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2021-12-22 08:35:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2021-12-22 08:35:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2021-12-22 08:35:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2021-12-22 08:35:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2021-12-22 08:35:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2021-12-22 08:35:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 08:35:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 08:35:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2021-12-22 08:35:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2021-12-22 08:35:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2021-12-22 08:35:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2021-12-22 08:35:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2021-12-22 08:35:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2021-12-22 08:35:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-22 08:35:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-22 08:35:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2021-12-22 08:35:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2021-12-22 08:35:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2021-12-22 08:35:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2021-12-22 08:35:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2021-12-22 08:35:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2021-12-22 08:35:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 08:35:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2021-12-22 08:35:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2021-12-22 08:35:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2021-12-22 08:35:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2021-12-22 08:35:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2021-12-22 08:35:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2021-12-22 08:35:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2021-12-22 08:35:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2021-12-22 08:35:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 08:35:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2021-12-22 08:35:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2021-12-22 08:35:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 08:35:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2021-12-22 08:35:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2021-12-22 08:35:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2021-12-22 08:35:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2021-12-22 08:35:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2021-12-22 08:35:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2021-12-22 08:35:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2021-12-22 08:35:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2021-12-22 08:35:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-22 08:35:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-22 08:35:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 08:35:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 08:35:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2021-12-22 08:35:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2021-12-22 08:35:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2021-12-22 08:35:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2021-12-22 08:35:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2021-12-22 08:35:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2021-12-22 08:35:37,449 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2021-12-22 08:35:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2021-12-22 08:35:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-22 08:35:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-22 08:35:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2021-12-22 08:35:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2021-12-22 08:35:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 08:35:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2021-12-22 08:35:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2021-12-22 08:35:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2021-12-22 08:35:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2021-12-22 08:35:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2021-12-22 08:35:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2021-12-22 08:35:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 08:35:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2021-12-22 08:35:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2021-12-22 08:35:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2021-12-22 08:35:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2021-12-22 08:35:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 08:35:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2021-12-22 08:35:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2021-12-22 08:35:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2021-12-22 08:35:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2021-12-22 08:35:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2021-12-22 08:35:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2021-12-22 08:35:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 08:35:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-22 08:35:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-22 08:35:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2021-12-22 08:35:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2021-12-22 08:35:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2021-12-22 08:35:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2021-12-22 08:35:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2021-12-22 08:35:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2021-12-22 08:35:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2021-12-22 08:35:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2021-12-22 08:35:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2021-12-22 08:35:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2021-12-22 08:35:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2021-12-22 08:35:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2021-12-22 08:35:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2021-12-22 08:35:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2021-12-22 08:35:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-12-22 08:35:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-12-22 08:35:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2021-12-22 08:35:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2021-12-22 08:35:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2021-12-22 08:35:37,463 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2021-12-22 08:35:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2021-12-22 08:35:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2021-12-22 08:35:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2021-12-22 08:35:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2021-12-22 08:35:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2021-12-22 08:35:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2021-12-22 08:35:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 08:35:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2021-12-22 08:35:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2021-12-22 08:35:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2021-12-22 08:35:37,464 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2021-12-22 08:35:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-22 08:35:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-22 08:35:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-12-22 08:35:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-12-22 08:35:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 08:35:37,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 08:35:38,146 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 08:35:38,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 08:35:38,195 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,225 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2021-12-22 08:35:38,225 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2021-12-22 08:35:38,229 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-12-22 08:35:38,300 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-12-22 08:35:38,580 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,611 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-12-22 08:35:38,612 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-12-22 08:35:38,834 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,838 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 08:35:38,838 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 08:35:38,898 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,912 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-12-22 08:35:38,912 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-12-22 08:35:38,973 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-22 08:35:38,978 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-22 08:35:38,980 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:38,997 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-12-22 08:35:38,997 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-12-22 08:35:38,997 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2021-12-22 08:35:39,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2021-12-22 08:35:39,251 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,252 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,253 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,253 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,254 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,255 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,260 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,281 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,284 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,285 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,285 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:39,286 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##477: assume !false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##476: assume false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##531: assume !false; [2021-12-22 08:35:47,677 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##530: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##520: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##576: assume !false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##575: assume false; [2021-12-22 08:35:47,678 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2021-12-22 08:35:47,730 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 08:35:47,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 08:35:47,751 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-12-22 08:35:47,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:47 BoogieIcfgContainer [2021-12-22 08:35:47,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 08:35:47,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 08:35:47,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 08:35:47,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 08:35:47,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:35:35" (1/3) ... [2021-12-22 08:35:47,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e014e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:47, skipping insertion in model container [2021-12-22 08:35:47,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:36" (2/3) ... [2021-12-22 08:35:47,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e014e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:47, skipping insertion in model container [2021-12-22 08:35:47,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:47" (3/3) ... [2021-12-22 08:35:47,763 INFO L111 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2021-12-22 08:35:47,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 08:35:47,766 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 08:35:47,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 08:35:47,819 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 [2021-12-22 08:35:47,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 08:35:47,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 1728 states, 1203 states have (on average 1.4638403990024937) internal successors, (1761), 1252 states have internal predecessors, (1761), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) [2021-12-22 08:35:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 08:35:47,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:47,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:47,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1747724696, now seen corresponding path program 1 times [2021-12-22 08:35:47,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:47,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630376077] [2021-12-22 08:35:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:47,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:48,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:48,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630376077] [2021-12-22 08:35:48,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630376077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:48,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:35:48,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:35:48,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792513868] [2021-12-22 08:35:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:48,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 08:35:48,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:48,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 08:35:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 08:35:48,274 INFO L87 Difference]: Start difference. First operand has 1728 states, 1203 states have (on average 1.4638403990024937) internal successors, (1761), 1252 states have internal predecessors, (1761), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:48,500 INFO L93 Difference]: Finished difference Result 3450 states and 5434 transitions. [2021-12-22 08:35:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 08:35:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-22 08:35:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:48,525 INFO L225 Difference]: With dead ends: 3450 [2021-12-22 08:35:48,525 INFO L226 Difference]: Without dead ends: 1721 [2021-12-22 08:35:48,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 08:35:48,539 INFO L933 BasicCegarLoop]: 2577 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:48,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:35:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-12-22 08:35:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1721. [2021-12-22 08:35:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1198 states have (on average 1.3998330550918197) internal successors, (1677), 1245 states have internal predecessors, (1677), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2021-12-22 08:35:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2564 transitions. [2021-12-22 08:35:48,681 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2564 transitions. Word has length 15 [2021-12-22 08:35:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:48,681 INFO L470 AbstractCegarLoop]: Abstraction has 1721 states and 2564 transitions. [2021-12-22 08:35:48,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2564 transitions. [2021-12-22 08:35:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 08:35:48,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:48,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:48,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 08:35:48,683 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 12693346, now seen corresponding path program 1 times [2021-12-22 08:35:48,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:48,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357025483] [2021-12-22 08:35:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:48,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:48,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:48,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357025483] [2021-12-22 08:35:48,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357025483] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:48,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:35:48,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:35:48,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261367318] [2021-12-22 08:35:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:48,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:35:48,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:35:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:35:48,790 INFO L87 Difference]: Start difference. First operand 1721 states and 2564 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:48,878 INFO L93 Difference]: Finished difference Result 3440 states and 5126 transitions. [2021-12-22 08:35:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:35:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-22 08:35:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:48,886 INFO L225 Difference]: With dead ends: 3440 [2021-12-22 08:35:48,887 INFO L226 Difference]: Without dead ends: 1723 [2021-12-22 08:35:48,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:35:48,893 INFO L933 BasicCegarLoop]: 2562 mSDtfsCounter, 1 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:48,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 5122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:35:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2021-12-22 08:35:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1722. [2021-12-22 08:35:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1199 states have (on average 1.3994995829858214) internal successors, (1678), 1246 states have internal predecessors, (1678), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2021-12-22 08:35:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2565 transitions. [2021-12-22 08:35:48,949 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2565 transitions. Word has length 15 [2021-12-22 08:35:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:48,949 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 2565 transitions. [2021-12-22 08:35:48,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2565 transitions. [2021-12-22 08:35:48,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 08:35:48,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:48,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:48,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 08:35:48,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 25759584, now seen corresponding path program 1 times [2021-12-22 08:35:48,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:48,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138662235] [2021-12-22 08:35:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:48,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:49,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138662235] [2021-12-22 08:35:49,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138662235] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:35:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105718808] [2021-12-22 08:35:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:49,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:35:49,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:35:49,064 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) [2021-12-22 08:35:49,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 08:35:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:49,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 08:35:49,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:35:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 08:35:49,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:35:49,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105718808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:49,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:35:49,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-22 08:35:49,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918530196] [2021-12-22 08:35:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:49,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:35:49,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:35:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:35:49,616 INFO L87 Difference]: Start difference. First operand 1722 states and 2565 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:49,725 INFO L93 Difference]: Finished difference Result 1792 states and 2653 transitions. [2021-12-22 08:35:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:35:49,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 08:35:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:49,732 INFO L225 Difference]: With dead ends: 1792 [2021-12-22 08:35:49,732 INFO L226 Difference]: Without dead ends: 1773 [2021-12-22 08:35:49,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:35:49,734 INFO L933 BasicCegarLoop]: 2562 mSDtfsCounter, 2542 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:49,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2542 Valid, 2626 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:35:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2021-12-22 08:35:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1764. [2021-12-22 08:35:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1233 states have (on average 1.3965936739659368) internal successors, (1722), 1282 states have internal predecessors, (1722), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2021-12-22 08:35:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2617 transitions. [2021-12-22 08:35:49,787 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2617 transitions. Word has length 17 [2021-12-22 08:35:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:49,787 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 2617 transitions. [2021-12-22 08:35:49,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2617 transitions. [2021-12-22 08:35:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 08:35:49,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:49,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:49,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 08:35:50,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:35:50,008 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash 11414675, now seen corresponding path program 1 times [2021-12-22 08:35:50,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:50,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288838788] [2021-12-22 08:35:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:50,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:50,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288838788] [2021-12-22 08:35:50,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288838788] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:35:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598313213] [2021-12-22 08:35:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:50,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:35:50,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:35:50,100 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) [2021-12-22 08:35:50,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 08:35:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:50,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 08:35:50,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:35:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 08:35:50,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 08:35:50,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598313213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:50,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 08:35:50,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-22 08:35:50,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269097938] [2021-12-22 08:35:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:50,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:35:50,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:35:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:35:50,651 INFO L87 Difference]: Start difference. First operand 1764 states and 2617 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:50,793 INFO L93 Difference]: Finished difference Result 1780 states and 2636 transitions. [2021-12-22 08:35:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:35:50,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-22 08:35:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:50,800 INFO L225 Difference]: With dead ends: 1780 [2021-12-22 08:35:50,801 INFO L226 Difference]: Without dead ends: 1764 [2021-12-22 08:35:50,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:35:50,802 INFO L933 BasicCegarLoop]: 2564 mSDtfsCounter, 0 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5071 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:50,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5071 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:35:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-12-22 08:35:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1764. [2021-12-22 08:35:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1233 states have (on average 1.3957826439578265) internal successors, (1721), 1282 states have internal predecessors, (1721), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2021-12-22 08:35:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2616 transitions. [2021-12-22 08:35:50,854 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2616 transitions. Word has length 17 [2021-12-22 08:35:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:50,854 INFO L470 AbstractCegarLoop]: Abstraction has 1764 states and 2616 transitions. [2021-12-22 08:35:50,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2616 transitions. [2021-12-22 08:35:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 08:35:50,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:50,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:50,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 08:35:51,075 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,SelfDestructingSolverStorable3 [2021-12-22 08:35:51,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -478438479, now seen corresponding path program 1 times [2021-12-22 08:35:51,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046730858] [2021-12-22 08:35:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:51,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:51,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:51,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046730858] [2021-12-22 08:35:51,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046730858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 08:35:51,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120749782] [2021-12-22 08:35:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:51,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:35:51,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:35:51,202 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) [2021-12-22 08:35:51,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 08:35:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:51,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 08:35:51,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 08:35:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:51,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 08:35:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:35:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120749782] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 08:35:51,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 08:35:51,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 08:35:51,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927849652] [2021-12-22 08:35:51,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 08:35:51,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:35:51,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:35:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:35:51,806 INFO L87 Difference]: Start difference. First operand 1764 states and 2616 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:51,899 INFO L93 Difference]: Finished difference Result 3529 states and 5235 transitions. [2021-12-22 08:35:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 08:35:51,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-22 08:35:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:51,907 INFO L225 Difference]: With dead ends: 3529 [2021-12-22 08:35:51,907 INFO L226 Difference]: Without dead ends: 1770 [2021-12-22 08:35:51,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:35:51,912 INFO L933 BasicCegarLoop]: 2561 mSDtfsCounter, 6 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7679 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:51,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7679 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:35:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-12-22 08:35:51,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1770. [2021-12-22 08:35:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1239 states have (on average 1.393866020984665) internal successors, (1727), 1288 states have internal predecessors, (1727), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2021-12-22 08:35:51,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2622 transitions. [2021-12-22 08:35:51,958 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2622 transitions. Word has length 22 [2021-12-22 08:35:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:51,958 INFO L470 AbstractCegarLoop]: Abstraction has 1770 states and 2622 transitions. [2021-12-22 08:35:51,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2622 transitions. [2021-12-22 08:35:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 08:35:51,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:51,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:51,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 08:35:52,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 08:35:52,181 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:52,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 307295479, now seen corresponding path program 2 times [2021-12-22 08:35:52,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:52,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711877449] [2021-12-22 08:35:52,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:52,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:35:52,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:52,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711877449] [2021-12-22 08:35:52,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711877449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:52,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:35:52,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:35:52,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438474609] [2021-12-22 08:35:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:52,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:35:52,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:52,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:35:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:35:52,337 INFO L87 Difference]: Start difference. First operand 1770 states and 2622 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:52,632 INFO L93 Difference]: Finished difference Result 4499 states and 6726 transitions. [2021-12-22 08:35:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:35:52,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-22 08:35:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:52,647 INFO L225 Difference]: With dead ends: 4499 [2021-12-22 08:35:52,647 INFO L226 Difference]: Without dead ends: 3330 [2021-12-22 08:35:52,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:35:52,652 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 2447 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:52,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2447 Valid, 6810 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 08:35:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2021-12-22 08:35:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3299. [2021-12-22 08:35:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2308 states have (on average 1.389948006932409) internal successors, (3208), 2376 states have internal predecessors, (3208), 851 states have call successors, (851), 142 states have call predecessors, (851), 139 states have return successors, (869), 818 states have call predecessors, (869), 835 states have call successors, (869) [2021-12-22 08:35:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4928 transitions. [2021-12-22 08:35:52,775 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4928 transitions. Word has length 28 [2021-12-22 08:35:52,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:52,775 INFO L470 AbstractCegarLoop]: Abstraction has 3299 states and 4928 transitions. [2021-12-22 08:35:52,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:35:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4928 transitions. [2021-12-22 08:35:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-22 08:35:52,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:52,777 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:52,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 08:35:52,778 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:52,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1796297636, now seen corresponding path program 1 times [2021-12-22 08:35:52,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:52,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200217406] [2021-12-22 08:35:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:52,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:35:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:35:52,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200217406] [2021-12-22 08:35:52,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200217406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:52,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:35:52,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 08:35:52,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509908391] [2021-12-22 08:35:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:52,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 08:35:52,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:52,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 08:35:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 08:35:52,941 INFO L87 Difference]: Start difference. First operand 3299 states and 4928 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:35:56,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:35:56,005 INFO L93 Difference]: Finished difference Result 4067 states and 6046 transitions. [2021-12-22 08:35:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:35:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-22 08:35:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:35:56,021 INFO L225 Difference]: With dead ends: 4067 [2021-12-22 08:35:56,021 INFO L226 Difference]: Without dead ends: 4062 [2021-12-22 08:35:56,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:35:56,023 INFO L933 BasicCegarLoop]: 2387 mSDtfsCounter, 2299 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2623 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 3760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 08:35:56,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2623 Valid, 4333 Invalid, 3760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 08:35:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-12-22 08:35:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4033. [2021-12-22 08:35:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.3794853207683944) internal successors, (3806), 2837 states have internal predecessors, (3806), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2021-12-22 08:35:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 6001 transitions. [2021-12-22 08:35:56,166 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 6001 transitions. Word has length 40 [2021-12-22 08:35:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:35:56,167 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 6001 transitions. [2021-12-22 08:35:56,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:35:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 6001 transitions. [2021-12-22 08:35:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-22 08:35:56,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:35:56,171 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:35:56,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 08:35:56,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:35:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:35:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash 601875904, now seen corresponding path program 1 times [2021-12-22 08:35:56,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:35:56,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085738486] [2021-12-22 08:35:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:35:56,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:35:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:35:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:35:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:35:56,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:35:56,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085738486] [2021-12-22 08:35:56,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085738486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:35:56,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:35:56,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:35:56,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086745549] [2021-12-22 08:35:56,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:35:56,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:35:56,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:35:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:35:56,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:35:56,312 INFO L87 Difference]: Start difference. First operand 4033 states and 6001 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:36:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:00,737 INFO L93 Difference]: Finished difference Result 4080 states and 6058 transitions. [2021-12-22 08:36:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:36:00,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-22 08:36:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:00,757 INFO L225 Difference]: With dead ends: 4080 [2021-12-22 08:36:00,758 INFO L226 Difference]: Without dead ends: 4071 [2021-12-22 08:36:00,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:36:00,760 INFO L933 BasicCegarLoop]: 2364 mSDtfsCounter, 5840 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 4137 mSolverCounterSat, 3677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5972 SdHoareTripleChecker+Valid, 5006 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3677 IncrementalHoareTripleChecker+Valid, 4137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:00,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5972 Valid, 5006 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3677 Valid, 4137 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-22 08:36:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-12-22 08:36:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4033. [2021-12-22 08:36:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.3787604204421893) internal successors, (3804), 2837 states have internal predecessors, (3804), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2021-12-22 08:36:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5999 transitions. [2021-12-22 08:36:00,931 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5999 transitions. Word has length 41 [2021-12-22 08:36:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:00,932 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 5999 transitions. [2021-12-22 08:36:00,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:36:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5999 transitions. [2021-12-22 08:36:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 08:36:00,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:00,934 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:00,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 08:36:00,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:00,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 588958024, now seen corresponding path program 1 times [2021-12-22 08:36:00,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:00,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64706153] [2021-12-22 08:36:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:00,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:36:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:01,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:01,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64706153] [2021-12-22 08:36:01,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64706153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:01,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:01,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 08:36:01,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142810934] [2021-12-22 08:36:01,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:01,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 08:36:01,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 08:36:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:36:01,069 INFO L87 Difference]: Start difference. First operand 4033 states and 5999 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:36:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:05,249 INFO L93 Difference]: Finished difference Result 4073 states and 6047 transitions. [2021-12-22 08:36:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:36:05,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-22 08:36:05,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:05,267 INFO L225 Difference]: With dead ends: 4073 [2021-12-22 08:36:05,268 INFO L226 Difference]: Without dead ends: 4064 [2021-12-22 08:36:05,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 08:36:05,270 INFO L933 BasicCegarLoop]: 2364 mSDtfsCounter, 5829 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 4132 mSolverCounterSat, 3675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5961 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 7807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3675 IncrementalHoareTripleChecker+Valid, 4132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:05,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5961 Valid, 5001 Invalid, 7807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3675 Valid, 4132 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-22 08:36:05,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-12-22 08:36:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 4033. [2021-12-22 08:36:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.378035520115984) internal successors, (3802), 2837 states have internal predecessors, (3802), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2021-12-22 08:36:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5997 transitions. [2021-12-22 08:36:05,407 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5997 transitions. Word has length 42 [2021-12-22 08:36:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:05,407 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 5997 transitions. [2021-12-22 08:36:05,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:36:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5997 transitions. [2021-12-22 08:36:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 08:36:05,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:05,408 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:05,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 08:36:05,409 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1278856833, now seen corresponding path program 1 times [2021-12-22 08:36:05,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:05,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098217287] [2021-12-22 08:36:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:05,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:05,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:05,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:05,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098217287] [2021-12-22 08:36:05,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098217287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:05,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:05,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:36:05,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969385557] [2021-12-22 08:36:05,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:05,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:36:05,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:05,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:36:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:36:05,553 INFO L87 Difference]: Start difference. First operand 4033 states and 5997 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:36:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:05,708 INFO L93 Difference]: Finished difference Result 6594 states and 9782 transitions. [2021-12-22 08:36:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:36:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-12-22 08:36:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:05,742 INFO L225 Difference]: With dead ends: 6594 [2021-12-22 08:36:05,743 INFO L226 Difference]: Without dead ends: 6291 [2021-12-22 08:36:05,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:36:05,747 INFO L933 BasicCegarLoop]: 3631 mSDtfsCounter, 2445 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 5455 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:05,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2445 Valid, 5455 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 08:36:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2021-12-22 08:36:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6210. [2021-12-22 08:36:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4199 states have (on average 1.3786615860919267) internal successors, (5789), 4317 states have internal predecessors, (5789), 1726 states have call successors, (1726), 283 states have call predecessors, (1726), 284 states have return successors, (1757), 1678 states have call predecessors, (1757), 1713 states have call successors, (1757) [2021-12-22 08:36:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9272 transitions. [2021-12-22 08:36:05,981 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9272 transitions. Word has length 43 [2021-12-22 08:36:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:05,981 INFO L470 AbstractCegarLoop]: Abstraction has 6210 states and 9272 transitions. [2021-12-22 08:36:05,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:36:05,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9272 transitions. [2021-12-22 08:36:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 08:36:05,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:05,984 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:05,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 08:36:05,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1132671081, now seen corresponding path program 1 times [2021-12-22 08:36:05,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:05,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529881160] [2021-12-22 08:36:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:05,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 08:36:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:06,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:06,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529881160] [2021-12-22 08:36:06,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529881160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:06,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:06,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 08:36:06,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789108467] [2021-12-22 08:36:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:06,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 08:36:06,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 08:36:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 08:36:06,101 INFO L87 Difference]: Start difference. First operand 6210 states and 9272 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:36:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:07,977 INFO L93 Difference]: Finished difference Result 6238 states and 9306 transitions. [2021-12-22 08:36:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 08:36:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-22 08:36:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:08,031 INFO L225 Difference]: With dead ends: 6238 [2021-12-22 08:36:08,032 INFO L226 Difference]: Without dead ends: 6192 [2021-12-22 08:36:08,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 08:36:08,052 INFO L933 BasicCegarLoop]: 2262 mSDtfsCounter, 825 mSDsluCounter, 3960 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 2958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:08,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 6222 Invalid, 2958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 08:36:08,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-12-22 08:36:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 6191. [2021-12-22 08:36:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4186 states have (on average 1.3786430960344003) internal successors, (5771), 4304 states have internal predecessors, (5771), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2021-12-22 08:36:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9242 transitions. [2021-12-22 08:36:08,306 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9242 transitions. Word has length 43 [2021-12-22 08:36:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:08,306 INFO L470 AbstractCegarLoop]: Abstraction has 6191 states and 9242 transitions. [2021-12-22 08:36:08,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 08:36:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9242 transitions. [2021-12-22 08:36:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 08:36:08,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:08,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:08,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 08:36:08,308 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash -323587381, now seen corresponding path program 1 times [2021-12-22 08:36:08,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:08,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801242439] [2021-12-22 08:36:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:08,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:08,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801242439] [2021-12-22 08:36:08,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801242439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:08,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 08:36:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484801412] [2021-12-22 08:36:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:08,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:36:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:36:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:36:08,447 INFO L87 Difference]: Start difference. First operand 6191 states and 9242 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:36:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:08,648 INFO L93 Difference]: Finished difference Result 6194 states and 9244 transitions. [2021-12-22 08:36:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:36:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-12-22 08:36:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:08,695 INFO L225 Difference]: With dead ends: 6194 [2021-12-22 08:36:08,695 INFO L226 Difference]: Without dead ends: 6191 [2021-12-22 08:36:08,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:36:08,700 INFO L933 BasicCegarLoop]: 2516 mSDtfsCounter, 12 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:08,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 4974 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 08:36:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2021-12-22 08:36:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6191. [2021-12-22 08:36:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4186 states have (on average 1.378404204491161) internal successors, (5770), 4304 states have internal predecessors, (5770), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2021-12-22 08:36:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9241 transitions. [2021-12-22 08:36:08,905 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9241 transitions. Word has length 43 [2021-12-22 08:36:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:08,906 INFO L470 AbstractCegarLoop]: Abstraction has 6191 states and 9241 transitions. [2021-12-22 08:36:08,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:36:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9241 transitions. [2021-12-22 08:36:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 08:36:08,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:08,908 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:08,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 08:36:08,908 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2052618280, now seen corresponding path program 1 times [2021-12-22 08:36:08,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:08,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779298651] [2021-12-22 08:36:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:08,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:36:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:36:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:09,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:09,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779298651] [2021-12-22 08:36:09,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779298651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:09,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:09,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:36:09,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647149349] [2021-12-22 08:36:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:09,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:36:09,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:36:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:36:09,061 INFO L87 Difference]: Start difference. First operand 6191 states and 9241 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:36:12,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 08:36:16,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 08:36:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:19,431 INFO L93 Difference]: Finished difference Result 12680 states and 19034 transitions. [2021-12-22 08:36:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 08:36:19,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2021-12-22 08:36:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:19,492 INFO L225 Difference]: With dead ends: 12680 [2021-12-22 08:36:19,507 INFO L226 Difference]: Without dead ends: 7064 [2021-12-22 08:36:19,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-22 08:36:19,594 INFO L933 BasicCegarLoop]: 2272 mSDtfsCounter, 625 mSDsluCounter, 11274 mSDsCounter, 0 mSdLazyCounter, 6334 mSolverCounterSat, 499 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 13546 SdHoareTripleChecker+Invalid, 6835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 6334 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:19,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 13546 Invalid, 6835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 6334 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-12-22 08:36:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2021-12-22 08:36:19,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 6200. [2021-12-22 08:36:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 4193 states have (on average 1.377772477939423) internal successors, (5777), 4311 states have internal predecessors, (5777), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 286 states have return successors, (1756), 1674 states have call predecessors, (1756), 1707 states have call successors, (1756) [2021-12-22 08:36:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 9253 transitions. [2021-12-22 08:36:19,825 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 9253 transitions. Word has length 46 [2021-12-22 08:36:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:19,825 INFO L470 AbstractCegarLoop]: Abstraction has 6200 states and 9253 transitions. [2021-12-22 08:36:19,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:36:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 9253 transitions. [2021-12-22 08:36:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 08:36:19,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:19,827 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:19,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 08:36:19,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1841267367, now seen corresponding path program 1 times [2021-12-22 08:36:19,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:19,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703308888] [2021-12-22 08:36:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:19,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:36:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:36:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:19,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:19,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703308888] [2021-12-22 08:36:19,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703308888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:19,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:19,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 08:36:19,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405525938] [2021-12-22 08:36:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:19,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 08:36:19,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 08:36:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 08:36:19,968 INFO L87 Difference]: Start difference. First operand 6200 states and 9253 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:36:23,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 08:36:27,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 08:36:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:30,346 INFO L93 Difference]: Finished difference Result 7096 states and 10689 transitions. [2021-12-22 08:36:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 08:36:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2021-12-22 08:36:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:30,368 INFO L225 Difference]: With dead ends: 7096 [2021-12-22 08:36:30,369 INFO L226 Difference]: Without dead ends: 7057 [2021-12-22 08:36:30,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-22 08:36:30,373 INFO L933 BasicCegarLoop]: 2259 mSDtfsCounter, 621 mSDsluCounter, 7663 mSDsCounter, 0 mSdLazyCounter, 4623 mSolverCounterSat, 499 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 9922 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 4623 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:30,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 9922 Invalid, 5124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 4623 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-12-22 08:36:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2021-12-22 08:36:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 6194. [2021-12-22 08:36:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6194 states, 4188 states have (on average 1.377984718242598) internal successors, (5771), 4306 states have internal predecessors, (5771), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2021-12-22 08:36:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 9244 transitions. [2021-12-22 08:36:30,615 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 9244 transitions. Word has length 46 [2021-12-22 08:36:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:30,616 INFO L470 AbstractCegarLoop]: Abstraction has 6194 states and 9244 transitions. [2021-12-22 08:36:30,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:36:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 9244 transitions. [2021-12-22 08:36:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 08:36:30,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:30,617 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:30,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 08:36:30,618 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103344, now seen corresponding path program 1 times [2021-12-22 08:36:30,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:30,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563226017] [2021-12-22 08:36:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:30,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-22 08:36:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:36:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:30,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:30,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563226017] [2021-12-22 08:36:30,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563226017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:30,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:30,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:36:30,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238722948] [2021-12-22 08:36:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:30,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:36:30,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:30,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:36:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:36:30,785 INFO L87 Difference]: Start difference. First operand 6194 states and 9244 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:36:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:36:35,728 INFO L93 Difference]: Finished difference Result 7054 states and 10635 transitions. [2021-12-22 08:36:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 08:36:35,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-12-22 08:36:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:36:35,771 INFO L225 Difference]: With dead ends: 7054 [2021-12-22 08:36:35,772 INFO L226 Difference]: Without dead ends: 7024 [2021-12-22 08:36:35,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-22 08:36:35,777 INFO L933 BasicCegarLoop]: 2150 mSDtfsCounter, 1552 mSDsluCounter, 8278 mSDsCounter, 0 mSdLazyCounter, 6667 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 10428 SdHoareTripleChecker+Invalid, 7930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 6667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-22 08:36:35,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1860 Valid, 10428 Invalid, 7930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1263 Valid, 6667 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-22 08:36:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2021-12-22 08:36:36,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6192. [2021-12-22 08:36:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 4187 states have (on average 1.3778361595414377) internal successors, (5769), 4305 states have internal predecessors, (5769), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2021-12-22 08:36:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9240 transitions. [2021-12-22 08:36:36,186 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9240 transitions. Word has length 47 [2021-12-22 08:36:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:36:36,187 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 9240 transitions. [2021-12-22 08:36:36,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 08:36:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9240 transitions. [2021-12-22 08:36:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 08:36:36,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:36:36,188 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:36:36,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 08:36:36,189 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:36:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:36:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1404767676, now seen corresponding path program 1 times [2021-12-22 08:36:36,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:36:36,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29888785] [2021-12-22 08:36:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:36:36,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:36:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 08:36:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 08:36:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:36:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 08:36:36,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:36:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29888785] [2021-12-22 08:36:36,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29888785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:36:36,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:36:36,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 08:36:36,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330234248] [2021-12-22 08:36:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:36:36,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 08:36:36,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:36:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 08:36:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 08:36:36,337 INFO L87 Difference]: Start difference. First operand 6192 states and 9240 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-22 08:36:39,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []