/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-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:46:03,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:46:03,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:46:03,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:46:03,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:46:03,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:46:03,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:46:03,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:46:03,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:46:03,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:46:03,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:46:03,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:46:03,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:46:03,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:46:03,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:46:03,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:46:03,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:46:03,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:46:03,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:46:03,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:46:03,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:46:03,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:46:03,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:46:03,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:46:03,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:46:03,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:46:03,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:46:03,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:46:03,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:46:03,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:46:03,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:46:03,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:46:03,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:46:03,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:46:03,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:46:03,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:46:03,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:46:03,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:46:03,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:46:03,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:46:03,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:46:03,527 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 02:46:03,548 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:46:03,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:46:03,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:46:03,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:46:03,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:46:03,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:46:03,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:46:03,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:46:03,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:46:03,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:46:03,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:46:03,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:46:03,551 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:46:03,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:46:03,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:46:03,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:46:03,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:46:03,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:46:03,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:46:03,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:46:03,744 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:46:03,745 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:46:03,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:46:04,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:46:05,221 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:46:05,221 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:46:05,262 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bad2d14c/9bba727eb60d457cb18d9a702967d131/FLAGc15e8b321 [2023-04-03 02:46:05,276 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bad2d14c/9bba727eb60d457cb18d9a702967d131 [2023-04-03 02:46:05,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:46:05,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:46:05,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:46:05,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:46:05,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:46:05,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:46:05" (1/1) ... [2023-04-03 02:46:05,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bd8fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:05, skipping insertion in model container [2023-04-03 02:46:05,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:46:05" (1/1) ... [2023-04-03 02:46:05,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:46:05,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:46:05,845 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-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-03 02:46:06,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:46:06,757 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:46:06,824 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-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19354,19367] [2023-04-03 02:46:07,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:46:07,566 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:46:07,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07 WrapperNode [2023-04-03 02:46:07,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:46:07,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:46:07,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:46:07,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:46:07,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,861 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:46:07,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:46:07,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:46:07,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:46:07,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (1/1) ... [2023-04-03 02:46:07,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:46:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:46:07,945 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 02:46:07,954 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 02:46:07,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:46:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:46:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:46:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:46:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:46:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:46:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:46:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:46:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:46:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:46:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:46:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:46:08,531 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:46:08,532 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:46:13,472 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:46:13,803 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:46:13,804 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:46:13,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:46:13 BoogieIcfgContainer [2023-04-03 02:46:13,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:46:13,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:46:13,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:46:13,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:46:13,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:46:05" (1/3) ... [2023-04-03 02:46:13,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a679200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:46:13, skipping insertion in model container [2023-04-03 02:46:13,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:46:07" (2/3) ... [2023-04-03 02:46:13,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a679200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:46:13, skipping insertion in model container [2023-04-03 02:46:13,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:46:13" (3/3) ... [2023-04-03 02:46:13,813 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:46:13,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:46:13,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 02:46:13,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:46:13,917 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;@322091cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:46:13,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 02:46:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 2821 states, 2815 states have (on average 1.911190053285968) internal successors, (5380), 2816 states have internal predecessors, (5380), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:46:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-03 02:46:13,951 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:13,952 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] [2023-04-03 02:46:13,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:13,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash -847438343, now seen corresponding path program 1 times [2023-04-03 02:46:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:13,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114241867] [2023-04-03 02:46:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:13,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:14,813 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 02:46:14,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114241867] [2023-04-03 02:46:14,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114241867] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:14,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:14,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037555704] [2023-04-03 02:46:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:14,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:14,851 INFO L87 Difference]: Start difference. First operand has 2821 states, 2815 states have (on average 1.911190053285968) internal successors, (5380), 2816 states have internal predecessors, (5380), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:15,213 INFO L93 Difference]: Finished difference Result 3255 states and 6103 transitions. [2023-04-03 02:46:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:15,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-03 02:46:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:15,237 INFO L225 Difference]: With dead ends: 3255 [2023-04-03 02:46:15,237 INFO L226 Difference]: Without dead ends: 3032 [2023-04-03 02:46:15,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:15,246 INFO L413 NwaCegarLoop]: 5385 mSDtfsCounter, 2637 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 8377 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:15,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2637 Valid, 8377 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:46:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-04-03 02:46:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3030. [2023-04-03 02:46:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3026 states have (on average 1.2729676140118968) internal successors, (3852), 3026 states have internal predecessors, (3852), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3855 transitions. [2023-04-03 02:46:15,351 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3855 transitions. Word has length 81 [2023-04-03 02:46:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:15,351 INFO L495 AbstractCegarLoop]: Abstraction has 3030 states and 3855 transitions. [2023-04-03 02:46:15,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3855 transitions. [2023-04-03 02:46:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-03 02:46:15,357 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:15,357 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] [2023-04-03 02:46:15,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:46:15,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:15,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 878278385, now seen corresponding path program 1 times [2023-04-03 02:46:15,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420853496] [2023-04-03 02:46:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:15,780 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 02:46:15,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:15,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420853496] [2023-04-03 02:46:15,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420853496] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:15,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:15,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:46:15,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952566082] [2023-04-03 02:46:15,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:15,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:46:15,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:15,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:46:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:46:15,784 INFO L87 Difference]: Start difference. First operand 3030 states and 3855 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:16,965 INFO L93 Difference]: Finished difference Result 4670 states and 6065 transitions. [2023-04-03 02:46:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:46:16,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-03 02:46:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:16,973 INFO L225 Difference]: With dead ends: 4670 [2023-04-03 02:46:16,973 INFO L226 Difference]: Without dead ends: 2530 [2023-04-03 02:46:16,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:16,978 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 7975 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7975 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:16,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7975 Valid, 1730 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 02:46:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2023-04-03 02:46:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2528. [2023-04-03 02:46:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2524 states have (on average 1.3050713153724247) internal successors, (3294), 2524 states have internal predecessors, (3294), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3297 transitions. [2023-04-03 02:46:17,041 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3297 transitions. Word has length 81 [2023-04-03 02:46:17,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:17,042 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 3297 transitions. [2023-04-03 02:46:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3297 transitions. [2023-04-03 02:46:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:46:17,047 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:17,048 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] [2023-04-03 02:46:17,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:46:17,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:17,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1215718780, now seen corresponding path program 1 times [2023-04-03 02:46:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266665617] [2023-04-03 02:46:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:17,390 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 02:46:17,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:17,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266665617] [2023-04-03 02:46:17,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266665617] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:17,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:17,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:46:17,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920269939] [2023-04-03 02:46:17,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:17,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:46:17,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:46:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:46:17,392 INFO L87 Difference]: Start difference. First operand 2528 states and 3297 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:18,291 INFO L93 Difference]: Finished difference Result 4393 states and 5882 transitions. [2023-04-03 02:46:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:46:18,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:46:18,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:18,299 INFO L225 Difference]: With dead ends: 4393 [2023-04-03 02:46:18,299 INFO L226 Difference]: Without dead ends: 2515 [2023-04-03 02:46:18,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:18,302 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 5979 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:18,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5979 Valid, 1296 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:46:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-04-03 02:46:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2513. [2023-04-03 02:46:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2509 states have (on average 1.3411717815862894) internal successors, (3365), 2509 states have internal predecessors, (3365), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3368 transitions. [2023-04-03 02:46:18,378 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3368 transitions. Word has length 82 [2023-04-03 02:46:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:18,379 INFO L495 AbstractCegarLoop]: Abstraction has 2513 states and 3368 transitions. [2023-04-03 02:46:18,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3368 transitions. [2023-04-03 02:46:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:46:18,382 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:18,382 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] [2023-04-03 02:46:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:46:18,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:18,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 158376049, now seen corresponding path program 1 times [2023-04-03 02:46:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449890155] [2023-04-03 02:46:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:18,555 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 02:46:18,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449890155] [2023-04-03 02:46:18,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449890155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:18,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971686293] [2023-04-03 02:46:18,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:18,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:18,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:18,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:18,557 INFO L87 Difference]: Start difference. First operand 2513 states and 3368 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:18,741 INFO L93 Difference]: Finished difference Result 4814 states and 6597 transitions. [2023-04-03 02:46:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:18,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-03 02:46:18,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:18,752 INFO L225 Difference]: With dead ends: 4814 [2023-04-03 02:46:18,752 INFO L226 Difference]: Without dead ends: 3830 [2023-04-03 02:46:18,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:18,755 INFO L413 NwaCegarLoop]: 2528 mSDtfsCounter, 1607 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:18,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 3676 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:46:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2023-04-03 02:46:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3828. [2023-04-03 02:46:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3824 states have (on average 1.3446652719665273) internal successors, (5142), 3824 states have internal predecessors, (5142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5145 transitions. [2023-04-03 02:46:18,921 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5145 transitions. Word has length 83 [2023-04-03 02:46:18,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:18,921 INFO L495 AbstractCegarLoop]: Abstraction has 3828 states and 5145 transitions. [2023-04-03 02:46:18,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5145 transitions. [2023-04-03 02:46:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:46:18,927 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:18,927 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] [2023-04-03 02:46:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:46:18,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:18,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1525018141, now seen corresponding path program 1 times [2023-04-03 02:46:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728551274] [2023-04-03 02:46:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:19,199 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 02:46:19,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728551274] [2023-04-03 02:46:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728551274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:19,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:19,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:46:19,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620193747] [2023-04-03 02:46:19,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:46:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:46:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:46:19,204 INFO L87 Difference]: Start difference. First operand 3828 states and 5145 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:20,213 INFO L93 Difference]: Finished difference Result 7378 states and 10085 transitions. [2023-04-03 02:46:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:46:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-03 02:46:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:20,231 INFO L225 Difference]: With dead ends: 7378 [2023-04-03 02:46:20,231 INFO L226 Difference]: Without dead ends: 4764 [2023-04-03 02:46:20,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:20,236 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 5028 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:20,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5028 Valid, 1024 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:46:20,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2023-04-03 02:46:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4762. [2023-04-03 02:46:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4758 states have (on average 1.335855401429172) internal successors, (6356), 4758 states have internal predecessors, (6356), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 6359 transitions. [2023-04-03 02:46:20,472 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 6359 transitions. Word has length 83 [2023-04-03 02:46:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:20,473 INFO L495 AbstractCegarLoop]: Abstraction has 4762 states and 6359 transitions. [2023-04-03 02:46:20,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 6359 transitions. [2023-04-03 02:46:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:46:20,481 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:20,481 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] [2023-04-03 02:46:20,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:46:20,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:20,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1156538848, now seen corresponding path program 1 times [2023-04-03 02:46:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119196009] [2023-04-03 02:46:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:20,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:20,667 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 02:46:20,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:20,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119196009] [2023-04-03 02:46:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119196009] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:20,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:20,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:20,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412872800] [2023-04-03 02:46:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:20,669 INFO L87 Difference]: Start difference. First operand 4762 states and 6359 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:21,213 INFO L93 Difference]: Finished difference Result 9624 states and 13331 transitions. [2023-04-03 02:46:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:21,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-03 02:46:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:21,232 INFO L225 Difference]: With dead ends: 9624 [2023-04-03 02:46:21,232 INFO L226 Difference]: Without dead ends: 7275 [2023-04-03 02:46:21,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:21,239 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 853 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:21,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2568 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:46:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2023-04-03 02:46:21,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 7273. [2023-04-03 02:46:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 7269 states have (on average 1.3589214472417113) internal successors, (9878), 7269 states have internal predecessors, (9878), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 9881 transitions. [2023-04-03 02:46:21,768 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 9881 transitions. Word has length 83 [2023-04-03 02:46:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:21,768 INFO L495 AbstractCegarLoop]: Abstraction has 7273 states and 9881 transitions. [2023-04-03 02:46:21,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 9881 transitions. [2023-04-03 02:46:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:46:21,776 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:21,777 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] [2023-04-03 02:46:21,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:46:21,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:21,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1401305766, now seen corresponding path program 1 times [2023-04-03 02:46:21,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154903052] [2023-04-03 02:46:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:21,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:21,952 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 02:46:21,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154903052] [2023-04-03 02:46:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154903052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29877741] [2023-04-03 02:46:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:21,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:21,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:21,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:21,955 INFO L87 Difference]: Start difference. First operand 7273 states and 9881 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:22,689 INFO L93 Difference]: Finished difference Result 16675 states and 23110 transitions. [2023-04-03 02:46:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:22,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-03 02:46:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:22,721 INFO L225 Difference]: With dead ends: 16675 [2023-04-03 02:46:22,722 INFO L226 Difference]: Without dead ends: 11790 [2023-04-03 02:46:22,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:22,733 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1404 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:22,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 3219 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:46:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11790 states. [2023-04-03 02:46:23,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11790 to 11788. [2023-04-03 02:46:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11788 states, 11784 states have (on average 1.363713509843856) internal successors, (16070), 11784 states have internal predecessors, (16070), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11788 states to 11788 states and 16073 transitions. [2023-04-03 02:46:23,403 INFO L78 Accepts]: Start accepts. Automaton has 11788 states and 16073 transitions. Word has length 83 [2023-04-03 02:46:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:23,403 INFO L495 AbstractCegarLoop]: Abstraction has 11788 states and 16073 transitions. [2023-04-03 02:46:23,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 11788 states and 16073 transitions. [2023-04-03 02:46:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:46:23,485 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:23,485 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] [2023-04-03 02:46:23,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:46:23,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:23,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1643493318, now seen corresponding path program 1 times [2023-04-03 02:46:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:23,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974630406] [2023-04-03 02:46:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:23,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:23,782 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 02:46:23,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:23,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974630406] [2023-04-03 02:46:23,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974630406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:23,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:23,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:46:23,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9624812] [2023-04-03 02:46:23,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:23,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:46:23,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:23,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:46:23,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:46:23,784 INFO L87 Difference]: Start difference. First operand 11788 states and 16073 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:25,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:25,606 INFO L93 Difference]: Finished difference Result 28962 states and 40268 transitions. [2023-04-03 02:46:25,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:46:25,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-03 02:46:25,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:25,643 INFO L225 Difference]: With dead ends: 28962 [2023-04-03 02:46:25,643 INFO L226 Difference]: Without dead ends: 18448 [2023-04-03 02:46:25,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:25,662 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 4437 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:25,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 956 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:46:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2023-04-03 02:46:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 18446. [2023-04-03 02:46:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18442 states have (on average 1.3841774211040017) internal successors, (25527), 18442 states have internal predecessors, (25527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 25530 transitions. [2023-04-03 02:46:27,145 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 25530 transitions. Word has length 83 [2023-04-03 02:46:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:27,146 INFO L495 AbstractCegarLoop]: Abstraction has 18446 states and 25530 transitions. [2023-04-03 02:46:27,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 25530 transitions. [2023-04-03 02:46:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 02:46:27,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:27,158 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] [2023-04-03 02:46:27,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:46:27,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:27,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -581288455, now seen corresponding path program 1 times [2023-04-03 02:46:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340444108] [2023-04-03 02:46:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:27,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:27,444 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 02:46:27,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340444108] [2023-04-03 02:46:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340444108] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:27,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:27,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:46:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611066397] [2023-04-03 02:46:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:46:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:46:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:46:27,449 INFO L87 Difference]: Start difference. First operand 18446 states and 25530 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:30,310 INFO L93 Difference]: Finished difference Result 50589 states and 70819 transitions. [2023-04-03 02:46:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:46:30,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-03 02:46:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:30,377 INFO L225 Difference]: With dead ends: 50589 [2023-04-03 02:46:30,377 INFO L226 Difference]: Without dead ends: 32760 [2023-04-03 02:46:30,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:30,406 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 3600 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:30,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 851 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:46:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32760 states. [2023-04-03 02:46:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32760 to 32758. [2023-04-03 02:46:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32758 states, 32754 states have (on average 1.3882884533186786) internal successors, (45472), 32754 states have internal predecessors, (45472), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32758 states to 32758 states and 45475 transitions. [2023-04-03 02:46:33,405 INFO L78 Accepts]: Start accepts. Automaton has 32758 states and 45475 transitions. Word has length 84 [2023-04-03 02:46:33,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:33,405 INFO L495 AbstractCegarLoop]: Abstraction has 32758 states and 45475 transitions. [2023-04-03 02:46:33,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 32758 states and 45475 transitions. [2023-04-03 02:46:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 02:46:33,418 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:33,418 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] [2023-04-03 02:46:33,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:46:33,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:33,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1768300821, now seen corresponding path program 1 times [2023-04-03 02:46:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264549673] [2023-04-03 02:46:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:33,611 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 02:46:33,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264549673] [2023-04-03 02:46:33,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264549673] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:33,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:33,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:46:33,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93638981] [2023-04-03 02:46:33,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:46:33,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:46:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:33,613 INFO L87 Difference]: Start difference. First operand 32758 states and 45475 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:38,955 INFO L93 Difference]: Finished difference Result 90027 states and 125272 transitions. [2023-04-03 02:46:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:46:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-03 02:46:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:39,086 INFO L225 Difference]: With dead ends: 90027 [2023-04-03 02:46:39,086 INFO L226 Difference]: Without dead ends: 58538 [2023-04-03 02:46:39,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:46:39,129 INFO L413 NwaCegarLoop]: 1382 mSDtfsCounter, 867 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:39,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2123 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:46:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58538 states. [2023-04-03 02:46:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58538 to 58536. [2023-04-03 02:46:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58536 states, 58532 states have (on average 1.3792113715574386) internal successors, (80728), 58532 states have internal predecessors, (80728), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58536 states to 58536 states and 80731 transitions. [2023-04-03 02:46:45,089 INFO L78 Accepts]: Start accepts. Automaton has 58536 states and 80731 transitions. Word has length 85 [2023-04-03 02:46:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 58536 states and 80731 transitions. [2023-04-03 02:46:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 58536 states and 80731 transitions. [2023-04-03 02:46:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:46:45,110 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:45,110 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] [2023-04-03 02:46:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:46:45,111 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:45,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -634181116, now seen corresponding path program 1 times [2023-04-03 02:46:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:45,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012444051] [2023-04-03 02:46:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:45,430 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 02:46:45,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:45,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012444051] [2023-04-03 02:46:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012444051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:46:45,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979560422] [2023-04-03 02:46:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:45,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:46:45,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:45,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:46:45,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:45,432 INFO L87 Difference]: Start difference. First operand 58536 states and 80731 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:19,273 INFO L93 Difference]: Finished difference Result 326660 states and 455811 transitions. [2023-04-03 02:47:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:47:19,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-03 02:47:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:20,282 INFO L225 Difference]: With dead ends: 326660 [2023-04-03 02:47:20,283 INFO L226 Difference]: Without dead ends: 301192 [2023-04-03 02:47:20,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:47:20,389 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 6351 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6351 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:20,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6351 Valid, 1631 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:47:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301192 states. [2023-04-03 02:47:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301192 to 58672. [2023-04-03 02:47:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58672 states, 58668 states have (on average 1.3790141133156064) internal successors, (80904), 58668 states have internal predecessors, (80904), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58672 states to 58672 states and 80907 transitions. [2023-04-03 02:47:31,644 INFO L78 Accepts]: Start accepts. Automaton has 58672 states and 80907 transitions. Word has length 86 [2023-04-03 02:47:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:31,644 INFO L495 AbstractCegarLoop]: Abstraction has 58672 states and 80907 transitions. [2023-04-03 02:47:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 58672 states and 80907 transitions. [2023-04-03 02:47:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:47:31,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:31,665 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] [2023-04-03 02:47:31,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:47:31,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:47:31,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash 284696148, now seen corresponding path program 1 times [2023-04-03 02:47:31,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:31,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704536700] [2023-04-03 02:47:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:31,942 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 02:47:31,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704536700] [2023-04-03 02:47:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704536700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:31,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:31,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:47:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989800561] [2023-04-03 02:47:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:47:31,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:47:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:47:31,944 INFO L87 Difference]: Start difference. First operand 58672 states and 80907 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:23,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:48:23,036 INFO L93 Difference]: Finished difference Result 299706 states and 417702 transitions. [2023-04-03 02:48:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:48:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-03 02:48:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:48:23,972 INFO L225 Difference]: With dead ends: 299706 [2023-04-03 02:48:23,972 INFO L226 Difference]: Without dead ends: 274304 [2023-04-03 02:48:24,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:48:24,088 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 5906 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5906 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:48:24,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5906 Valid, 1612 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:48:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274304 states. [2023-04-03 02:48:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274304 to 58984. [2023-04-03 02:48:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58984 states, 58980 states have (on average 1.3787046456425907) internal successors, (81316), 58980 states have internal predecessors, (81316), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58984 states to 58984 states and 81319 transitions. [2023-04-03 02:48:36,642 INFO L78 Accepts]: Start accepts. Automaton has 58984 states and 81319 transitions. Word has length 86 [2023-04-03 02:48:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:48:36,642 INFO L495 AbstractCegarLoop]: Abstraction has 58984 states and 81319 transitions. [2023-04-03 02:48:36,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 58984 states and 81319 transitions. [2023-04-03 02:48:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:48:36,663 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:48:36,663 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] [2023-04-03 02:48:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:48:36,663 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:48:36,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:48:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -903017831, now seen corresponding path program 1 times [2023-04-03 02:48:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:48:36,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867493784] [2023-04-03 02:48:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:48:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:48:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:48:36,981 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 02:48:36,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:48:36,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867493784] [2023-04-03 02:48:36,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867493784] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:48:36,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:48:36,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:48:36,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815571364] [2023-04-03 02:48:36,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:48:36,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:48:36,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:48:36,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:48:36,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:48:36,983 INFO L87 Difference]: Start difference. First operand 58984 states and 81319 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:49:34,495 INFO L93 Difference]: Finished difference Result 272464 states and 379197 transitions. [2023-04-03 02:49:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:49:34,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2023-04-03 02:49:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:49:35,246 INFO L225 Difference]: With dead ends: 272464 [2023-04-03 02:49:35,246 INFO L226 Difference]: Without dead ends: 247710 [2023-04-03 02:49:35,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:49:35,335 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 5619 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5619 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:49:35,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5619 Valid, 1598 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:49:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247710 states. [2023-04-03 02:49:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247710 to 59546. [2023-04-03 02:49:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59546 states, 59542 states have (on average 1.3783211850458499) internal successors, (82068), 59542 states have internal predecessors, (82068), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59546 states to 59546 states and 82071 transitions. [2023-04-03 02:49:50,098 INFO L78 Accepts]: Start accepts. Automaton has 59546 states and 82071 transitions. Word has length 86 [2023-04-03 02:49:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:49:50,098 INFO L495 AbstractCegarLoop]: Abstraction has 59546 states and 82071 transitions. [2023-04-03 02:49:50,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:49:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 59546 states and 82071 transitions. [2023-04-03 02:49:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:49:50,123 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:49:50,123 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] [2023-04-03 02:49:50,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:49:50,124 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:49:50,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:49:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 216576447, now seen corresponding path program 1 times [2023-04-03 02:49:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:49:50,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580233486] [2023-04-03 02:49:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:49:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:49:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:49:50,399 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 02:49:50,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:49:50,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580233486] [2023-04-03 02:49:50,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580233486] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:49:50,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:49:50,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:49:50,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288690285] [2023-04-03 02:49:50,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:49:50,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:49:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:49:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:49:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:49:50,401 INFO L87 Difference]: Start difference. First operand 59546 states and 82071 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)