/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_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:04:46,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:04:46,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:04:46,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:04:46,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:04:46,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:04:46,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:04:46,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:04:46,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:04:46,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:04:46,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:04:46,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:04:46,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:04:46,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:04:46,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:04:46,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:04:46,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:04:46,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:04:46,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:04:46,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:04:46,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:04:46,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:04:46,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:04:46,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:04:46,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:04:46,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:04:46,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:04:46,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:04:46,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:04:46,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:04:46,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:04:46,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:04:46,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:04:46,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:04:46,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:04:46,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:04:46,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:04:46,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:04:46,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:04:46,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:04:46,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:04:46,342 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 02:04:46,360 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:04:46,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:04:46,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:04:46,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:04:46,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:04:46,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:04:46,362 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:04:46,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:04:46,362 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:04:46,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:04:46,362 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:04:46,362 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:04:46,363 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:04:46,363 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:04:46,363 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:04:46,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:04:46,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:04:46,363 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:04:46,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:04:46,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:04:46,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:04:46,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:04:46,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:04:46,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:04:46,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:04:46,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:04:46,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:04:46,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:04:46,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:04:46,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:04:46,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:04:46,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:04:46,617 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:04:46,618 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:04:46,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2023-04-03 02:04:47,758 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:04:48,004 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:04:48,005 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2023-04-03 02:04:48,018 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4923e7be/fdf12edb37bb4e24883c999931ae6f20/FLAG0cd4e7e38 [2023-04-03 02:04:48,029 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4923e7be/fdf12edb37bb4e24883c999931ae6f20 [2023-04-03 02:04:48,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:04:48,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:04:48,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:04:48,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:04:48,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:04:48,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b02ac7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48, skipping insertion in model container [2023-04-03 02:04:48,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:04:48,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:04:48,484 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_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c[55979,55992] [2023-04-03 02:04:48,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:04:48,515 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:04:48,644 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_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c[55979,55992] [2023-04-03 02:04:48,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:04:48,661 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:04:48,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48 WrapperNode [2023-04-03 02:04:48,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:04:48,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:04:48,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:04:48,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:04:48,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:04:48,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:04:48,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:04:48,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:04:48,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (1/1) ... [2023-04-03 02:04:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:04:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:04:48,847 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 02:04:48,869 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 02:04:48,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:04:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:04:48,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:04:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:04:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-03 02:04:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-03 02:04:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-03 02:04:48,889 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-03 02:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-03 02:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-03 02:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-03 02:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:04:48,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:04:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:04:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:04:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:04:49,129 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:04:49,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:04:50,484 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:04:51,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:04:51,836 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-03 02:04:51,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:04:51 BoogieIcfgContainer [2023-04-03 02:04:51,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:04:51,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:04:51,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:04:51,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:04:51,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:04:48" (1/3) ... [2023-04-03 02:04:51,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5551d7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:04:51, skipping insertion in model container [2023-04-03 02:04:51,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:04:48" (2/3) ... [2023-04-03 02:04:51,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5551d7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:04:51, skipping insertion in model container [2023-04-03 02:04:51,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:04:51" (3/3) ... [2023-04-03 02:04:51,850 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2023-04-03 02:04:51,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:04:51,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 02:04:51,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:04:51,946 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;@6fa88f9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:04:51,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 02:04:51,957 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 02:04:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-03 02:04:51,987 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:04:51,988 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 02:04:51,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:04:51,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:04:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 185846783, now seen corresponding path program 1 times [2023-04-03 02:04:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:04:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594647743] [2023-04-03 02:04:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:04:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:04:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:03,454 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 02:05:03,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594647743] [2023-04-03 02:05:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594647743] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:03,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-04-03 02:05:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051798611] [2023-04-03 02:05:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:03,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-03 02:05:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-03 02:05:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-04-03 02:05:03,516 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 02:05:08,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:08,920 INFO L93 Difference]: Finished difference Result 578 states and 929 transitions. [2023-04-03 02:05:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-04-03 02:05:08,923 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 02:05:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:08,937 INFO L225 Difference]: With dead ends: 578 [2023-04-03 02:05:08,938 INFO L226 Difference]: Without dead ends: 533 [2023-04-03 02:05:08,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=438, Invalid=1368, Unknown=0, NotChecked=0, Total=1806 [2023-04-03 02:05:08,944 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6458 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7173 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:08,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6461 Valid, 142 Invalid, 7363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 7173 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-03 02:05:08,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-04-03 02:05:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 509. [2023-04-03 02:05:09,026 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 02:05:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 833 transitions. [2023-04-03 02:05:09,029 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 833 transitions. Word has length 160 [2023-04-03 02:05:09,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:09,030 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 833 transitions. [2023-04-03 02:05:09,030 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 02:05:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 833 transitions. [2023-04-03 02:05:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-03 02:05:09,033 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:09,033 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 02:05:09,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:05:09,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:09,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1834575053, now seen corresponding path program 1 times [2023-04-03 02:05:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:09,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32119050] [2023-04-03 02:05:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:13,064 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 02:05:13,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32119050] [2023-04-03 02:05:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32119050] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:13,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:05:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613752836] [2023-04-03 02:05:13,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:13,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:05:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:05:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:05:13,068 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 02:05:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:15,869 INFO L93 Difference]: Finished difference Result 589 states and 935 transitions. [2023-04-03 02:05:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:05:15,869 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 02:05:15,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:15,873 INFO L225 Difference]: With dead ends: 589 [2023-04-03 02:05:15,874 INFO L226 Difference]: Without dead ends: 540 [2023-04-03 02:05:15,875 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 02:05:15,876 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 847 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5520 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 5558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 5520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:15,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 96 Invalid, 5558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 5520 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-03 02:05:15,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-04-03 02:05:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 509. [2023-04-03 02:05:15,926 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, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-03 02:05:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 831 transitions. [2023-04-03 02:05:15,928 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 831 transitions. Word has length 161 [2023-04-03 02:05:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:15,929 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 831 transitions. [2023-04-03 02:05:15,929 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 02:05:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 831 transitions. [2023-04-03 02:05:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-03 02:05:15,931 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:15,931 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 02:05:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:05:15,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:15,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1063568872, now seen corresponding path program 1 times [2023-04-03 02:05:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679114033] [2023-04-03 02:05:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:15,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:19,529 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 02:05:19,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:19,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679114033] [2023-04-03 02:05:19,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679114033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:19,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:19,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:05:19,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845635710] [2023-04-03 02:05:19,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:19,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:05:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:05:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:05:19,534 INFO L87 Difference]: Start difference. First operand 509 states and 831 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 02:05:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:22,303 INFO L93 Difference]: Finished difference Result 583 states and 919 transitions. [2023-04-03 02:05:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:05:22,305 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 02:05:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:22,308 INFO L225 Difference]: With dead ends: 583 [2023-04-03 02:05:22,308 INFO L226 Difference]: Without dead ends: 539 [2023-04-03 02:05:22,313 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 02:05:22,314 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1642 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6313 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 6355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 6313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:22,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 99 Invalid, 6355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 6313 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-03 02:05:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-04-03 02:05:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 509. [2023-04-03 02:05:22,362 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 02:05:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 830 transitions. [2023-04-03 02:05:22,364 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 830 transitions. Word has length 162 [2023-04-03 02:05:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:22,370 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 830 transitions. [2023-04-03 02:05:22,370 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 02:05:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 830 transitions. [2023-04-03 02:05:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-03 02:05:22,372 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:22,373 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 02:05:22,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:05:22,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:22,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1818428732, now seen corresponding path program 1 times [2023-04-03 02:05:22,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:22,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408613960] [2023-04-03 02:05:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:22,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:25,663 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 02:05:25,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408613960] [2023-04-03 02:05:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408613960] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:25,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:25,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:05:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917771048] [2023-04-03 02:05:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:25,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:05:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:05:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:05:25,667 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 02:05:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:28,159 INFO L93 Difference]: Finished difference Result 589 states and 924 transitions. [2023-04-03 02:05:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:05:28,160 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 02:05:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:28,162 INFO L225 Difference]: With dead ends: 589 [2023-04-03 02:05:28,162 INFO L226 Difference]: Without dead ends: 545 [2023-04-03 02:05:28,163 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 02:05:28,164 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 857 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5556 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:28,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 100 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5556 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-03 02:05:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-04-03 02:05:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 509. [2023-04-03 02:05:28,205 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 02:05:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 829 transitions. [2023-04-03 02:05:28,207 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 829 transitions. Word has length 163 [2023-04-03 02:05:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:28,208 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 829 transitions. [2023-04-03 02:05:28,208 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 02:05:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 829 transitions. [2023-04-03 02:05:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-03 02:05:28,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:28,210 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 02:05:28,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:05:28,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:28,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash 555992017, now seen corresponding path program 1 times [2023-04-03 02:05:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:28,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918106541] [2023-04-03 02:05:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:28,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:30,857 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 02:05:30,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918106541] [2023-04-03 02:05:30,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918106541] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:30,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:30,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:05:30,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184524826] [2023-04-03 02:05:30,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:30,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:05:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:05:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:05:30,860 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 02:05:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:33,302 INFO L93 Difference]: Finished difference Result 595 states and 929 transitions. [2023-04-03 02:05:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:05:33,303 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 02:05:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:33,306 INFO L225 Difference]: With dead ends: 595 [2023-04-03 02:05:33,306 INFO L226 Difference]: Without dead ends: 551 [2023-04-03 02:05:33,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 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 02:05:33,312 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 865 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5574 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 5620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:33,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 102 Invalid, 5620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5574 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-03 02:05:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-04-03 02:05:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 509. [2023-04-03 02:05:33,355 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 02:05:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 828 transitions. [2023-04-03 02:05:33,358 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 828 transitions. Word has length 164 [2023-04-03 02:05:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:33,358 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 828 transitions. [2023-04-03 02:05:33,359 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 02:05:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 828 transitions. [2023-04-03 02:05:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-04-03 02:05:33,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:33,361 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 02:05:33,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:05:33,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:33,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1181870917, now seen corresponding path program 1 times [2023-04-03 02:05:33,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:33,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255325637] [2023-04-03 02:05:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:33,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:35,838 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 02:05:35,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255325637] [2023-04-03 02:05:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255325637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:35,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:35,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:05:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609681506] [2023-04-03 02:05:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:35,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:05:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:05:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:05:35,841 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 02:05:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:38,642 INFO L93 Difference]: Finished difference Result 601 states and 934 transitions. [2023-04-03 02:05:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:05:38,643 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 02:05:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:38,645 INFO L225 Difference]: With dead ends: 601 [2023-04-03 02:05:38,645 INFO L226 Difference]: Without dead ends: 557 [2023-04-03 02:05:38,649 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 02:05:38,653 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 859 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6393 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:38,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 111 Invalid, 6419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 6393 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-03 02:05:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-04-03 02:05:38,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 509. [2023-04-03 02:05:38,701 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 02:05:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 827 transitions. [2023-04-03 02:05:38,704 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 827 transitions. Word has length 165 [2023-04-03 02:05:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:38,704 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 827 transitions. [2023-04-03 02:05:38,705 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 02:05:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 827 transitions. [2023-04-03 02:05:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-03 02:05:38,707 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:38,707 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 02:05:38,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:05:38,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:38,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1236225555, now seen corresponding path program 1 times [2023-04-03 02:05:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:38,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157269304] [2023-04-03 02:05:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:38,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:45,275 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 02:05:45,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:45,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157269304] [2023-04-03 02:05:45,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157269304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:45,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:45,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 02:05:45,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545254316] [2023-04-03 02:05:45,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:45,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 02:05:45,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 02:05:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-04-03 02:05:45,278 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 02:05:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:50,787 INFO L93 Difference]: Finished difference Result 607 states and 948 transitions. [2023-04-03 02:05:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-03 02:05:50,788 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 02:05:50,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:50,790 INFO L225 Difference]: With dead ends: 607 [2023-04-03 02:05:50,790 INFO L226 Difference]: Without dead ends: 559 [2023-04-03 02:05:50,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2023-04-03 02:05:50,792 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5533 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 8886 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5536 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 9064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 8886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:50,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5536 Valid, 203 Invalid, 9064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 8886 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-03 02:05:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-04-03 02:05:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 513. [2023-04-03 02:05:50,845 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 02:05:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 830 transitions. [2023-04-03 02:05:50,847 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 830 transitions. Word has length 167 [2023-04-03 02:05:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:50,848 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 830 transitions. [2023-04-03 02:05:50,848 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 02:05:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 830 transitions. [2023-04-03 02:05:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-03 02:05:50,850 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:50,851 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 02:05:50,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:05:50,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:50,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1362020936, now seen corresponding path program 1 times [2023-04-03 02:05:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314020774] [2023-04-03 02:05:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:05:54,193 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 02:05:54,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:05:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314020774] [2023-04-03 02:05:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314020774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:05:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:05:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:05:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244133453] [2023-04-03 02:05:54,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:05:54,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:05:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:05:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:05:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:05:54,196 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 02:05:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:05:56,954 INFO L93 Difference]: Finished difference Result 612 states and 953 transitions. [2023-04-03 02:05:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:05:56,954 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 02:05:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:05:56,957 INFO L225 Difference]: With dead ends: 612 [2023-04-03 02:05:56,958 INFO L226 Difference]: Without dead ends: 560 [2023-04-03 02:05:56,959 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 02:05:56,961 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 849 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5675 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 5716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 5675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:05:56,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 115 Invalid, 5716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 5675 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-03 02:05:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-04-03 02:05:57,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 545. [2023-04-03 02:05:57,034 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 02:05:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 864 transitions. [2023-04-03 02:05:57,036 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 864 transitions. Word has length 168 [2023-04-03 02:05:57,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:05:57,037 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 864 transitions. [2023-04-03 02:05:57,037 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 02:05:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 864 transitions. [2023-04-03 02:05:57,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-03 02:05:57,039 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:05:57,039 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 02:05:57,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:05:57,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:05:57,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:05:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1039422610, now seen corresponding path program 1 times [2023-04-03 02:05:57,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:05:57,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785114520] [2023-04-03 02:05:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:05:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:05:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:06:03,129 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 02:06:03,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:06:03,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785114520] [2023-04-03 02:06:03,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785114520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:06:03,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:06:03,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-03 02:06:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708715513] [2023-04-03 02:06:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:06:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-03 02:06:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:06:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-03 02:06:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-04-03 02:06:03,132 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 02:06:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:06:07,937 INFO L93 Difference]: Finished difference Result 684 states and 1025 transitions. [2023-04-03 02:06:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-03 02:06:07,937 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 02:06:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:06:07,941 INFO L225 Difference]: With dead ends: 684 [2023-04-03 02:06:07,941 INFO L226 Difference]: Without dead ends: 603 [2023-04-03 02:06:07,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2023-04-03 02:06:07,944 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6335 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 7274 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 7476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 7274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:06:07,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 163 Invalid, 7476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 7274 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-04-03 02:06:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-04-03 02:06:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 547. [2023-04-03 02:06:08,017 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 02:06:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 865 transitions. [2023-04-03 02:06:08,019 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 865 transitions. Word has length 170 [2023-04-03 02:06:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:06:08,020 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 865 transitions. [2023-04-03 02:06:08,020 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 02:06:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 865 transitions. [2023-04-03 02:06:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-04-03 02:06:08,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:06:08,022 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 02:06:08,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:06:08,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:06:08,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:06:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1112274168, now seen corresponding path program 1 times [2023-04-03 02:06:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:06:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437394056] [2023-04-03 02:06:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:06:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:06:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:06:10,654 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 02:06:10,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:06:10,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437394056] [2023-04-03 02:06:10,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437394056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:06:10,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:06:10,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-03 02:06:10,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777292782] [2023-04-03 02:06:10,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:06:10,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-03 02:06:10,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:06:10,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-03 02:06:10,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-04-03 02:06:10,656 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 02:06:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:06:11,381 INFO L93 Difference]: Finished difference Result 582 states and 910 transitions. [2023-04-03 02:06:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 02:06:11,382 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 02:06:11,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:06:11,385 INFO L225 Difference]: With dead ends: 582 [2023-04-03 02:06:11,385 INFO L226 Difference]: Without dead ends: 580 [2023-04-03 02:06:11,386 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 02:06:11,386 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 02:06:11,386 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 02:06:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2023-04-03 02:06:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 555. [2023-04-03 02:06:11,458 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 02:06:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 873 transitions. [2023-04-03 02:06:11,461 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 873 transitions. Word has length 171 [2023-04-03 02:06:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:06:11,461 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 873 transitions. [2023-04-03 02:06:11,461 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 02:06:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 873 transitions. [2023-04-03 02:06:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-04-03 02:06:11,464 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:06:11,465 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 02:06:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:06:11,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:06:11,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:06:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1988151056, now seen corresponding path program 1 times [2023-04-03 02:06:11,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:06:11,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793539366] [2023-04-03 02:06:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:06:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:06:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat