/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:41:35,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:41:35,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:41:35,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:41:35,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:41:35,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:41:35,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:41:35,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:41:35,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:41:35,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:41:35,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:41:35,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:41:35,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:41:35,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:41:35,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:41:35,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:41:35,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:41:35,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:41:35,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:41:35,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:41:35,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:41:35,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:41:35,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:41:35,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:41:35,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:41:35,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:41:35,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:41:35,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:41:35,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:41:35,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:41:35,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:41:35,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:41:35,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:41:35,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:41:35,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:41:35,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:41:35,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:41:35,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:41:35,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:41:35,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:41:35,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:41:35,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:41:35,356 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:41:35,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:41:35,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:41:35,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:41:35,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:41:35,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:41:35,358 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:41:35,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:41:35,358 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:41:35,359 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:41:35,359 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:41:35,359 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:41:35,359 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:41:35,360 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:41:35,360 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:41:35,360 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:41:35,360 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:41:35,360 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:41:35,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:41:35,361 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:41:35,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:41:35,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:41:35,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:41:35,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:41:35,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:41:35,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:41:35,362 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:41:35,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:41:35,362 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:41:35,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:41:35,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:41:35,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:41:35,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:41:35,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:41:35,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:41:35,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:41:35,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:41:35,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:41:35,593 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:41:35,593 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:41:35,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-03 01:41:36,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:41:36,915 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:41:36,916 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-03 01:41:36,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666fb0878/4edd12ac179d48418428f76692e5462e/FLAGd646a9adf [2023-04-03 01:41:36,963 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666fb0878/4edd12ac179d48418428f76692e5462e [2023-04-03 01:41:36,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:41:36,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:41:36,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:41:36,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:41:36,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:41:36,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:41:36" (1/1) ... [2023-04-03 01:41:36,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0d6484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:36, skipping insertion in model container [2023-04-03 01:41:36,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:41:36" (1/1) ... [2023-04-03 01:41:36,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:41:37,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:41:37,400 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c[61123,61136] [2023-04-03 01:41:37,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:41:37,414 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:41:37,512 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.ufo.UNBOUNDED.pals.c[61123,61136] [2023-04-03 01:41:37,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:41:37,527 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:41:37,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37 WrapperNode [2023-04-03 01:41:37,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:41:37,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:41:37,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:41:37,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:41:37,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,683 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:41:37,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:41:37,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:41:37,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:41:37,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (1/1) ... [2023-04-03 01:41:37,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:41:37,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:41:37,754 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) [2023-04-03 01:41:37,776 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 [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 01:41:37,794 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 01:41:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 01:41:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 01:41:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 01:41:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 01:41:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:41:37,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 01:41:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:41:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:41:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:41:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 01:41:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:41:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:41:37,989 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:41:37,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:41:39,385 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:41:40,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:41:40,653 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 01:41:40,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:41:40 BoogieIcfgContainer [2023-04-03 01:41:40,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:41:40,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:41:40,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:41:40,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:41:40,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:41:36" (1/3) ... [2023-04-03 01:41:40,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3741e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:41:40, skipping insertion in model container [2023-04-03 01:41:40,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:41:37" (2/3) ... [2023-04-03 01:41:40,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3741e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:41:40, skipping insertion in model container [2023-04-03 01:41:40,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:41:40" (3/3) ... [2023-04-03 01:41:40,665 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.UNBOUNDED.pals.c [2023-04-03 01:41:40,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:41:40,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:41:40,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:41:40,755 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23a8de49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:41:40,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:41:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 454 states have (on average 1.6938325991189427) internal successors, (769), 456 states have internal predecessors, (769), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-03 01:41:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-03 01:41:40,790 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:41:40,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:41:40,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:41:40,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:41:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash 103772363, now seen corresponding path program 1 times [2023-04-03 01:41:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:41:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335443529] [2023-04-03 01:41:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:41:40,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:41:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:41:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:41:54,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:41:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335443529] [2023-04-03 01:41:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335443529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:41:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:41:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 01:41:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738640119] [2023-04-03 01:41:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:41:54,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 01:41:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:41:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 01:41:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-03 01:41:54,181 INFO L87 Difference]: Start difference. First operand has 478 states, 454 states have (on average 1.6938325991189427) internal successors, (769), 456 states have internal predecessors, (769), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:41:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:41:59,766 INFO L93 Difference]: Finished difference Result 578 states and 929 transitions. [2023-04-03 01:41:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-03 01:41:59,768 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 160 [2023-04-03 01:41:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:41:59,784 INFO L225 Difference]: With dead ends: 578 [2023-04-03 01:41:59,784 INFO L226 Difference]: Without dead ends: 533 [2023-04-03 01:41:59,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-04-03 01:41:59,790 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6458 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6461 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 7363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 7173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:41:59,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6461 Valid, 142 Invalid, 7363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-03 01:41:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-04-03 01:41:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 509. [2023-04-03 01:41:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.6821052631578948) internal successors, (799), 476 states have internal predecessors, (799), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2023-04-03 01:41:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 833 transitions. [2023-04-03 01:41:59,885 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 833 transitions. Word has length 160 [2023-04-03 01:41:59,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:41:59,886 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 833 transitions. [2023-04-03 01:41:59,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 11 states have (on average 12.727272727272727) internal successors, (140), 13 states have internal predecessors, (140), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:41:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 833 transitions. [2023-04-03 01:41:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-03 01:41:59,889 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:41:59,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:41:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:41:59,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:41:59,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:41:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2033712541, now seen corresponding path program 1 times [2023-04-03 01:41:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:41:59,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511237122] [2023-04-03 01:41:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:41:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:05,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:05,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511237122] [2023-04-03 01:42:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511237122] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:05,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440478991] [2023-04-03 01:42:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:05,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:05,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:05,133 INFO L87 Difference]: Start difference. First operand 509 states and 833 transitions. Second operand has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:07,826 INFO L93 Difference]: Finished difference Result 584 states and 927 transitions. [2023-04-03 01:42:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 161 [2023-04-03 01:42:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:07,831 INFO L225 Difference]: With dead ends: 584 [2023-04-03 01:42:07,831 INFO L226 Difference]: Without dead ends: 535 [2023-04-03 01:42:07,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:07,833 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 826 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5498 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 5498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:07,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 96 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 5498 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 01:42:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-04-03 01:42:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 509. [2023-04-03 01:42:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.68) internal successors, (798), 476 states have internal predecessors, (798), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17) [2023-04-03 01:42:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 832 transitions. [2023-04-03 01:42:07,882 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 832 transitions. Word has length 161 [2023-04-03 01:42:07,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:07,882 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 832 transitions. [2023-04-03 01:42:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.142857142857142) internal successors, (141), 9 states have internal predecessors, (141), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 832 transitions. [2023-04-03 01:42:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-03 01:42:07,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:07,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:07,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:42:07,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:07,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1455939980, now seen corresponding path program 1 times [2023-04-03 01:42:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584242586] [2023-04-03 01:42:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:11,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:11,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584242586] [2023-04-03 01:42:11,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584242586] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:11,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:11,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:11,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666351793] [2023-04-03 01:42:11,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:11,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:11,930 INFO L87 Difference]: Start difference. First operand 509 states and 832 transitions. Second operand has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:14,468 INFO L93 Difference]: Finished difference Result 595 states and 940 transitions. [2023-04-03 01:42:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 162 [2023-04-03 01:42:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:14,475 INFO L225 Difference]: With dead ends: 595 [2023-04-03 01:42:14,475 INFO L226 Difference]: Without dead ends: 546 [2023-04-03 01:42:14,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:14,477 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1643 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5522 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 5569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:14,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 92 Invalid, 5569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 5522 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 01:42:14,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-04-03 01:42:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 509. [2023-04-03 01:42:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.6778947368421053) internal successors, (797), 476 states have internal predecessors, (797), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 830 transitions. [2023-04-03 01:42:14,521 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 830 transitions. Word has length 162 [2023-04-03 01:42:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:14,521 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 830 transitions. [2023-04-03 01:42:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.285714285714285) internal successors, (142), 9 states have internal predecessors, (142), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 830 transitions. [2023-04-03 01:42:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-03 01:42:14,524 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:14,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:14,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:42:14,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:14,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1154274330, now seen corresponding path program 1 times [2023-04-03 01:42:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015727659] [2023-04-03 01:42:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:18,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015727659] [2023-04-03 01:42:18,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015727659] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:18,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:18,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:18,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690202971] [2023-04-03 01:42:18,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:18,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:18,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:18,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:18,115 INFO L87 Difference]: Start difference. First operand 509 states and 830 transitions. Second operand has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:20,579 INFO L93 Difference]: Finished difference Result 589 states and 924 transitions. [2023-04-03 01:42:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:20,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 163 [2023-04-03 01:42:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:20,584 INFO L225 Difference]: With dead ends: 589 [2023-04-03 01:42:20,584 INFO L226 Difference]: Without dead ends: 545 [2023-04-03 01:42:20,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:20,586 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 855 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5603 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:20,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 103 Invalid, 5633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5603 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 01:42:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-04-03 01:42:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 509. [2023-04-03 01:42:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.6757894736842105) internal successors, (796), 476 states have internal predecessors, (796), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 829 transitions. [2023-04-03 01:42:20,630 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 829 transitions. Word has length 163 [2023-04-03 01:42:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:20,630 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 829 transitions. [2023-04-03 01:42:20,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.428571428571427) internal successors, (143), 9 states have internal predecessors, (143), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 829 transitions. [2023-04-03 01:42:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-03 01:42:20,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:20,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:20,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:42:20,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:20,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:20,634 INFO L85 PathProgramCache]: Analyzing trace with hash 714137629, now seen corresponding path program 1 times [2023-04-03 01:42:20,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:20,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42918215] [2023-04-03 01:42:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:24,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42918215] [2023-04-03 01:42:24,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42918215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:24,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:24,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:24,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789629891] [2023-04-03 01:42:24,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:24,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:24,099 INFO L87 Difference]: Start difference. First operand 509 states and 829 transitions. Second operand has 11 states, 7 states have (on average 20.571428571428573) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:26,549 INFO L93 Difference]: Finished difference Result 595 states and 929 transitions. [2023-04-03 01:42:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:26,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.571428571428573) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 164 [2023-04-03 01:42:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:26,552 INFO L225 Difference]: With dead ends: 595 [2023-04-03 01:42:26,552 INFO L226 Difference]: Without dead ends: 551 [2023-04-03 01:42:26,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:26,554 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1654 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5555 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 5615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 5555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:26,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 96 Invalid, 5615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 5555 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 01:42:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-04-03 01:42:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 509. [2023-04-03 01:42:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.6736842105263159) internal successors, (795), 476 states have internal predecessors, (795), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 828 transitions. [2023-04-03 01:42:26,598 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 828 transitions. Word has length 164 [2023-04-03 01:42:26,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:26,599 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 828 transitions. [2023-04-03 01:42:26,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.571428571428573) internal successors, (144), 9 states have internal predecessors, (144), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 828 transitions. [2023-04-03 01:42:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-03 01:42:26,601 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:26,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:26,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:42:26,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:26,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash -387922385, now seen corresponding path program 1 times [2023-04-03 01:42:26,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:26,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623398422] [2023-04-03 01:42:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:26,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:29,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623398422] [2023-04-03 01:42:29,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623398422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:29,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:29,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872546065] [2023-04-03 01:42:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:29,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:29,791 INFO L87 Difference]: Start difference. First operand 509 states and 828 transitions. Second operand has 11 states, 7 states have (on average 20.714285714285715) internal successors, (145), 9 states have internal predecessors, (145), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:32,442 INFO L93 Difference]: Finished difference Result 601 states and 934 transitions. [2023-04-03 01:42:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:32,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 20.714285714285715) internal successors, (145), 9 states have internal predecessors, (145), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 165 [2023-04-03 01:42:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:32,446 INFO L225 Difference]: With dead ends: 601 [2023-04-03 01:42:32,446 INFO L226 Difference]: Without dead ends: 557 [2023-04-03 01:42:32,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:32,453 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 859 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6393 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 6419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 6393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:32,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 111 Invalid, 6419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 6393 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 01:42:32,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-04-03 01:42:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 509. [2023-04-03 01:42:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 475 states have (on average 1.671578947368421) internal successors, (794), 476 states have internal predecessors, (794), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 827 transitions. [2023-04-03 01:42:32,509 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 827 transitions. Word has length 165 [2023-04-03 01:42:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:32,509 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 827 transitions. [2023-04-03 01:42:32,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 20.714285714285715) internal successors, (145), 9 states have internal predecessors, (145), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:32,510 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 827 transitions. [2023-04-03 01:42:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-03 01:42:32,511 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:32,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:32,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 01:42:32,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:32,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:32,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1065496855, now seen corresponding path program 1 times [2023-04-03 01:42:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:32,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88394808] [2023-04-03 01:42:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:40,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:40,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88394808] [2023-04-03 01:42:40,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88394808] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:40,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:40,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 01:42:40,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588224065] [2023-04-03 01:42:40,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:40,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 01:42:40,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 01:42:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-04-03 01:42:40,050 INFO L87 Difference]: Start difference. First operand 509 states and 827 transitions. Second operand has 24 states, 12 states have (on average 12.25) internal successors, (147), 14 states have internal predecessors, (147), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:42:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:45,922 INFO L93 Difference]: Finished difference Result 607 states and 948 transitions. [2023-04-03 01:42:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-03 01:42:45,923 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 12 states have (on average 12.25) internal successors, (147), 14 states have internal predecessors, (147), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 167 [2023-04-03 01:42:45,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:45,925 INFO L225 Difference]: With dead ends: 607 [2023-04-03 01:42:45,925 INFO L226 Difference]: Without dead ends: 559 [2023-04-03 01:42:45,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2023-04-03 01:42:45,927 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5533 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 8883 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 9062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 8883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:45,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5536 Valid, 203 Invalid, 9062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 8883 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-03 01:42:45,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-04-03 01:42:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 513. [2023-04-03 01:42:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 479 states have (on average 1.663883089770355) internal successors, (797), 480 states have internal predecessors, (797), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 01:42:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 830 transitions. [2023-04-03 01:42:46,001 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 830 transitions. Word has length 167 [2023-04-03 01:42:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:46,002 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 830 transitions. [2023-04-03 01:42:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 12 states have (on average 12.25) internal successors, (147), 14 states have internal predecessors, (147), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:42:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 830 transitions. [2023-04-03 01:42:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-03 01:42:46,005 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:46,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:46,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 01:42:46,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:46,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1818598932, now seen corresponding path program 1 times [2023-04-03 01:42:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575996411] [2023-04-03 01:42:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:42:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:42:50,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:42:50,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575996411] [2023-04-03 01:42:50,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575996411] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:42:50,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:42:50,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 01:42:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736213906] [2023-04-03 01:42:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:42:50,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 01:42:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:42:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 01:42:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-03 01:42:50,729 INFO L87 Difference]: Start difference. First operand 513 states and 830 transitions. Second operand has 11 states, 7 states have (on average 21.142857142857142) internal successors, (148), 9 states have internal predecessors, (148), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:42:53,769 INFO L93 Difference]: Finished difference Result 612 states and 953 transitions. [2023-04-03 01:42:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:42:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 21.142857142857142) internal successors, (148), 9 states have internal predecessors, (148), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 168 [2023-04-03 01:42:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:42:53,773 INFO L225 Difference]: With dead ends: 612 [2023-04-03 01:42:53,773 INFO L226 Difference]: Without dead ends: 560 [2023-04-03 01:42:53,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-04-03 01:42:53,775 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 849 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-03 01:42:53,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 115 Invalid, 5712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-03 01:42:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-03 01:42:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 545. [2023-04-03 01:42:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 497 states have (on average 1.6418511066398391) internal successors, (816), 498 states have internal predecessors, (816), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (24), 22 states have call predecessors, (24), 23 states have call successors, (24) [2023-04-03 01:42:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 864 transitions. [2023-04-03 01:42:53,853 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 864 transitions. Word has length 168 [2023-04-03 01:42:53,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:42:53,853 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 864 transitions. [2023-04-03 01:42:53,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 21.142857142857142) internal successors, (148), 9 states have internal predecessors, (148), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-03 01:42:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 864 transitions. [2023-04-03 01:42:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-03 01:42:53,855 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:42:53,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:42:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 01:42:53,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:42:53,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:42:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1310035206, now seen corresponding path program 1 times [2023-04-03 01:42:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:42:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631788631] [2023-04-03 01:42:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:42:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:42:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:43:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:43:00,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:43:00,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631788631] [2023-04-03 01:43:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631788631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:43:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:43:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 01:43:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179896105] [2023-04-03 01:43:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:43:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 01:43:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:43:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 01:43:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-04-03 01:43:00,230 INFO L87 Difference]: Start difference. First operand 545 states and 864 transitions. Second operand has 24 states, 12 states have (on average 12.5) internal successors, (150), 14 states have internal predecessors, (150), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:43:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:43:05,398 INFO L93 Difference]: Finished difference Result 684 states and 1025 transitions. [2023-04-03 01:43:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-04-03 01:43:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 12 states have (on average 12.5) internal successors, (150), 14 states have internal predecessors, (150), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 170 [2023-04-03 01:43:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:43:05,402 INFO L225 Difference]: With dead ends: 684 [2023-04-03 01:43:05,402 INFO L226 Difference]: Without dead ends: 603 [2023-04-03 01:43:05,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=591, Invalid=1959, Unknown=0, NotChecked=0, Total=2550 [2023-04-03 01:43:05,404 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 6349 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 7350 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 7350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:43:05,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 185 Invalid, 7558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 7350 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-03 01:43:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-04-03 01:43:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 547. [2023-04-03 01:43:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 498 states have (on average 1.6385542168674698) internal successors, (816), 500 states have internal predecessors, (816), 24 states have call successors, (24), 24 states have call predecessors, (24), 24 states have return successors, (25), 22 states have call predecessors, (25), 23 states have call successors, (25) [2023-04-03 01:43:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 865 transitions. [2023-04-03 01:43:05,485 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 865 transitions. Word has length 170 [2023-04-03 01:43:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:43:05,486 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 865 transitions. [2023-04-03 01:43:05,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 12 states have (on average 12.5) internal successors, (150), 14 states have internal predecessors, (150), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-03 01:43:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 865 transitions. [2023-04-03 01:43:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-03 01:43:05,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:43:05,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:43:05,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 01:43:05,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:43:05,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:43:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash 79684361, now seen corresponding path program 1 times [2023-04-03 01:43:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:43:05,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803266677] [2023-04-03 01:43:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:43:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:43:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:43:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:43:08,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:43:08,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803266677] [2023-04-03 01:43:08,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803266677] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:43:08,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:43:08,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-03 01:43:08,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452213575] [2023-04-03 01:43:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:43:08,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-03 01:43:08,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:43:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-03 01:43:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-04-03 01:43:08,818 INFO L87 Difference]: Start difference. First operand 547 states and 865 transitions. Second operand has 13 states, 8 states have (on average 18.875) internal successors, (151), 10 states have internal predecessors, (151), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 01:43:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:43:09,551 INFO L93 Difference]: Finished difference Result 582 states and 910 transitions. [2023-04-03 01:43:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 01:43:09,552 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 18.875) internal successors, (151), 10 states have internal predecessors, (151), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 171 [2023-04-03 01:43:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:43:09,557 INFO L225 Difference]: With dead ends: 582 [2023-04-03 01:43:09,557 INFO L226 Difference]: Without dead ends: 580 [2023-04-03 01:43:09,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-04-03 01:43:09,559 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 36 mSDsluCounter, 7934 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8663 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:43:09,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8663 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 01:43:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-04-03 01:43:09,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 555. [2023-04-03 01:43:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 503 states have (on average 1.63220675944334) internal successors, (821), 506 states have internal predecessors, (821), 25 states have call successors, (25), 25 states have call predecessors, (25), 26 states have return successors, (27), 23 states have call predecessors, (27), 24 states have call successors, (27) [2023-04-03 01:43:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 873 transitions. [2023-04-03 01:43:09,650 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 873 transitions. Word has length 171 [2023-04-03 01:43:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:43:09,651 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 873 transitions. [2023-04-03 01:43:09,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 18.875) internal successors, (151), 10 states have internal predecessors, (151), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-03 01:43:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 873 transitions. [2023-04-03 01:43:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-04-03 01:43:09,653 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:43:09,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:43:09,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 01:43:09,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:43:09,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:43:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 706330235, now seen corresponding path program 1 times [2023-04-03 01:43:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:43:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134561242] [2023-04-03 01:43:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:43:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:43:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat