/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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:32:01,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:32:01,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:32:01,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:32:01,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:32:01,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:32:01,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:32:01,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:32:01,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:32:01,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:32:01,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:32:01,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:32:01,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:32:01,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:32:01,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:32:01,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:32:01,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:32:01,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:32:01,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:32:01,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:32:01,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:32:01,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:32:01,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:32:01,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:32:01,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:32:01,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:32:01,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:32:01,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:32:01,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:32:01,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:32:01,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:32:01,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:32:01,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:32:01,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:32:01,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:32:01,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:32:01,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:32:01,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:32:01,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:32:01,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:32:01,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:32:01,878 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 [2023-04-01 06:32:01,891 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:32:01,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:32:01,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:32:01,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:32:01,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:32:01,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:32:01,892 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:32:01,892 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:32:01,893 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:32:01,893 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:32:01,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:32:01,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:32:01,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:32:01,894 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:32:01,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:32:01,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:32:01,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:32:01,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:32:01,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:32:01,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:32:01,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:32:01,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:32:01,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:32:02,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:32:02,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:32:02,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:32:02,086 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:32:02,087 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:32:02,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-01 06:32:02,982 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:32:03,340 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:32:03,340 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-01 06:32:03,358 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c58999/c7e188a225764c9cb0fba6ad61ccc3ce/FLAG456c357a4 [2023-04-01 06:32:03,368 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c58999/c7e188a225764c9cb0fba6ad61ccc3ce [2023-04-01 06:32:03,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:32:03,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:32:03,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:32:03,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:32:03,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:32:03,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:32:03" (1/1) ... [2023-04-01 06:32:03,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8b1aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:03, skipping insertion in model container [2023-04-01 06:32:03,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:32:03" (1/1) ... [2023-04-01 06:32:03,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:32:03,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:32:03,694 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7184,7197] [2023-04-01 06:32:03,724 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11285,11298] [2023-04-01 06:32:03,744 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18315,18328] [2023-04-01 06:32:03,773 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24747,24760] [2023-04-01 06:32:03,818 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43722,43735] [2023-04-01 06:32:03,861 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71504,71517] [2023-04-01 06:32:03,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:32:04,004 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:32:04,022 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7184,7197] [2023-04-01 06:32:04,059 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11285,11298] [2023-04-01 06:32:04,066 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18315,18328] [2023-04-01 06:32:04,073 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24747,24760] [2023-04-01 06:32:04,090 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43722,43735] [2023-04-01 06:32:04,116 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.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71504,71517] [2023-04-01 06:32:04,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:32:04,185 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:32:04,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04 WrapperNode [2023-04-01 06:32:04,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:32:04,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:32:04,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:32:04,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:32:04,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:32:04,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:32:04,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:32:04,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:32:04,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (1/1) ... [2023-04-01 06:32:04,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:32:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:32:04,381 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) [2023-04-01 06:32:04,401 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 [2023-04-01 06:32:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:32:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:32:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:32:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:32:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:32:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:32:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:32:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:32:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:32:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:32:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:32:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:32:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:32:04,637 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:32:04,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:32:06,510 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:32:06,811 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:32:06,811 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:32:06,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:32:06 BoogieIcfgContainer [2023-04-01 06:32:06,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:32:06,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:32:06,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:32:06,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:32:06,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:32:03" (1/3) ... [2023-04-01 06:32:06,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba6063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:32:06, skipping insertion in model container [2023-04-01 06:32:06,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:32:04" (2/3) ... [2023-04-01 06:32:06,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba6063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:32:06, skipping insertion in model container [2023-04-01 06:32:06,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:32:06" (3/3) ... [2023-04-01 06:32:06,825 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-01 06:32:06,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:32:06,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-01 06:32:06,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:32:06,913 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;@6ef13d4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:32:06,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-01 06:32:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 1182 states, 1171 states have (on average 1.8078565328778822) internal successors, (2117), 1177 states have internal predecessors, (2117), 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) [2023-04-01 06:32:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 06:32:06,947 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:06,947 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] [2023-04-01 06:32:06,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:06,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1761931692, now seen corresponding path program 1 times [2023-04-01 06:32:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158543719] [2023-04-01 06:32:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:06,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:07,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:07,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158543719] [2023-04-01 06:32:07,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158543719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:07,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:07,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:32:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143181273] [2023-04-01 06:32:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:32:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:07,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:32:07,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:32:07,457 INFO L87 Difference]: Start difference. First operand has 1182 states, 1171 states have (on average 1.8078565328778822) internal successors, (2117), 1177 states have internal predecessors, (2117), 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 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-04-01 06:32:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:08,765 INFO L93 Difference]: Finished difference Result 2270 states and 3974 transitions. [2023-04-01 06:32:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:32:08,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 54 [2023-04-01 06:32:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:08,810 INFO L225 Difference]: With dead ends: 2270 [2023-04-01 06:32:08,810 INFO L226 Difference]: Without dead ends: 1418 [2023-04-01 06:32:08,815 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 [2023-04-01 06:32:08,829 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 6470 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6470 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:08,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6470 Valid, 1341 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 06:32:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2023-04-01 06:32:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1412. [2023-04-01 06:32:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1403 states have (on average 1.3193157519600855) internal successors, (1851), 1408 states have internal predecessors, (1851), 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) [2023-04-01 06:32:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1854 transitions. [2023-04-01 06:32:08,932 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1854 transitions. Word has length 54 [2023-04-01 06:32:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:08,932 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1854 transitions. [2023-04-01 06:32:08,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-04-01 06:32:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1854 transitions. [2023-04-01 06:32:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 06:32:08,936 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:08,936 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] [2023-04-01 06:32:08,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:32:08,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:08,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 94503601, now seen corresponding path program 1 times [2023-04-01 06:32:08,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:08,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911236304] [2023-04-01 06:32:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:09,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:09,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911236304] [2023-04-01 06:32:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911236304] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:32:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80927120] [2023-04-01 06:32:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:09,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:32:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:09,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:32:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:32:09,080 INFO L87 Difference]: Start difference. First operand 1412 states and 1854 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-04-01 06:32:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:09,845 INFO L93 Difference]: Finished difference Result 2826 states and 3739 transitions. [2023-04-01 06:32:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:32:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 55 [2023-04-01 06:32:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:09,852 INFO L225 Difference]: With dead ends: 2826 [2023-04-01 06:32:09,852 INFO L226 Difference]: Without dead ends: 1950 [2023-04-01 06:32:09,855 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 [2023-04-01 06:32:09,856 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 4436 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:09,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 846 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:32:09,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2023-04-01 06:32:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1938. [2023-04-01 06:32:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1929 states have (on average 1.3291861067910835) internal successors, (2564), 1934 states have internal predecessors, (2564), 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) [2023-04-01 06:32:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2567 transitions. [2023-04-01 06:32:09,940 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2567 transitions. Word has length 55 [2023-04-01 06:32:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:09,940 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 2567 transitions. [2023-04-01 06:32:09,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-04-01 06:32:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2567 transitions. [2023-04-01 06:32:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 06:32:09,945 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:09,945 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] [2023-04-01 06:32:09,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:32:09,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:09,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1203569634, now seen corresponding path program 1 times [2023-04-01 06:32:09,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:09,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932369326] [2023-04-01 06:32:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:10,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:10,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932369326] [2023-04-01 06:32:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932369326] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:10,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:10,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:32:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86223124] [2023-04-01 06:32:10,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:10,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:32:10,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:32:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:32:10,089 INFO L87 Difference]: Start difference. First operand 1938 states and 2567 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-04-01 06:32:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:10,822 INFO L93 Difference]: Finished difference Result 3911 states and 5221 transitions. [2023-04-01 06:32:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:32:10,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 55 [2023-04-01 06:32:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:10,829 INFO L225 Difference]: With dead ends: 3911 [2023-04-01 06:32:10,829 INFO L226 Difference]: Without dead ends: 2624 [2023-04-01 06:32:10,831 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 [2023-04-01 06:32:10,833 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 3827 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:10,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 738 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:32:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2023-04-01 06:32:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2614. [2023-04-01 06:32:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2605 states have (on average 1.3197696737044147) internal successors, (3438), 2610 states have internal predecessors, (3438), 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) [2023-04-01 06:32:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3441 transitions. [2023-04-01 06:32:10,928 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3441 transitions. Word has length 55 [2023-04-01 06:32:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:10,928 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 3441 transitions. [2023-04-01 06:32:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-04-01 06:32:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3441 transitions. [2023-04-01 06:32:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 06:32:10,931 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:10,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:32:10,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:32:10,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:10,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1700731340, now seen corresponding path program 1 times [2023-04-01 06:32:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:10,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365313867] [2023-04-01 06:32:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:11,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:11,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365313867] [2023-04-01 06:32:11,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365313867] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:11,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:11,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:32:11,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55819205] [2023-04-01 06:32:11,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:11,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:32:11,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:32:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:32:11,281 INFO L87 Difference]: Start difference. First operand 2614 states and 3441 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2023-04-01 06:32:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:13,421 INFO L93 Difference]: Finished difference Result 4836 states and 6461 transitions. [2023-04-01 06:32:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:32:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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 56 [2023-04-01 06:32:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:13,437 INFO L225 Difference]: With dead ends: 4836 [2023-04-01 06:32:13,437 INFO L226 Difference]: Without dead ends: 4463 [2023-04-01 06:32:13,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-04-01 06:32:13,445 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 5280 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5280 SdHoareTripleChecker+Valid, 3065 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:13,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5280 Valid, 3065 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3755 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 06:32:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2023-04-01 06:32:13,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 2614. [2023-04-01 06:32:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2605 states have (on average 1.3193857965451055) internal successors, (3437), 2610 states have internal predecessors, (3437), 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) [2023-04-01 06:32:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3440 transitions. [2023-04-01 06:32:13,656 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3440 transitions. Word has length 56 [2023-04-01 06:32:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:13,657 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 3440 transitions. [2023-04-01 06:32:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2023-04-01 06:32:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3440 transitions. [2023-04-01 06:32:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 06:32:13,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:13,661 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] [2023-04-01 06:32:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:32:13,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:13,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 767132385, now seen corresponding path program 1 times [2023-04-01 06:32:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:13,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212325570] [2023-04-01 06:32:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:13,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:13,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212325570] [2023-04-01 06:32:13,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212325570] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:13,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:13,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:32:13,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005990772] [2023-04-01 06:32:13,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:13,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:32:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:32:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:32:13,987 INFO L87 Difference]: Start difference. First operand 2614 states and 3440 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2023-04-01 06:32:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:15,567 INFO L93 Difference]: Finished difference Result 3574 states and 4705 transitions. [2023-04-01 06:32:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:32:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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 56 [2023-04-01 06:32:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:15,591 INFO L225 Difference]: With dead ends: 3574 [2023-04-01 06:32:15,591 INFO L226 Difference]: Without dead ends: 3569 [2023-04-01 06:32:15,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:32:15,596 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 5446 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:15,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5446 Valid, 2382 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 06:32:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2023-04-01 06:32:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2614. [2023-04-01 06:32:15,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2605 states have (on average 1.3190019193857965) internal successors, (3436), 2610 states have internal predecessors, (3436), 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) [2023-04-01 06:32:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3439 transitions. [2023-04-01 06:32:15,791 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3439 transitions. Word has length 56 [2023-04-01 06:32:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:15,791 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 3439 transitions. [2023-04-01 06:32:15,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2023-04-01 06:32:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3439 transitions. [2023-04-01 06:32:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 06:32:15,793 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:15,793 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] [2023-04-01 06:32:15,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:32:15,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:15,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:15,794 INFO L85 PathProgramCache]: Analyzing trace with hash 309495063, now seen corresponding path program 1 times [2023-04-01 06:32:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:15,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077903664] [2023-04-01 06:32:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:15,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:16,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:16,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077903664] [2023-04-01 06:32:16,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077903664] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:16,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:16,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 06:32:16,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504705943] [2023-04-01 06:32:16,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:16,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 06:32:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:16,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 06:32:16,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 06:32:16,048 INFO L87 Difference]: Start difference. First operand 2614 states and 3439 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2023-04-01 06:32:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:17,307 INFO L93 Difference]: Finished difference Result 4096 states and 5494 transitions. [2023-04-01 06:32:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 06:32:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 56 [2023-04-01 06:32:17,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:17,317 INFO L225 Difference]: With dead ends: 4096 [2023-04-01 06:32:17,317 INFO L226 Difference]: Without dead ends: 3625 [2023-04-01 06:32:17,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:32:17,319 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 5827 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5827 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:17,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5827 Valid, 1791 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:32:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2023-04-01 06:32:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 2614. [2023-04-01 06:32:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2605 states have (on average 1.3186180422264875) internal successors, (3435), 2610 states have internal predecessors, (3435), 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) [2023-04-01 06:32:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 3438 transitions. [2023-04-01 06:32:17,550 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 3438 transitions. Word has length 56 [2023-04-01 06:32:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:17,550 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 3438 transitions. [2023-04-01 06:32:17,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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) [2023-04-01 06:32:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 3438 transitions. [2023-04-01 06:32:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-01 06:32:17,553 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:17,553 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] [2023-04-01 06:32:17,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:32:17,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:17,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1089640708, now seen corresponding path program 1 times [2023-04-01 06:32:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865232926] [2023-04-01 06:32:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:17,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865232926] [2023-04-01 06:32:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865232926] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:17,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:17,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:17,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141287352] [2023-04-01 06:32:17,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:17,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:17,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:17,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:17,617 INFO L87 Difference]: Start difference. First operand 2614 states and 3438 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-01 06:32:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:17,917 INFO L93 Difference]: Finished difference Result 3207 states and 4300 transitions. [2023-04-01 06:32:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 57 [2023-04-01 06:32:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:17,924 INFO L225 Difference]: With dead ends: 3207 [2023-04-01 06:32:17,924 INFO L226 Difference]: Without dead ends: 2552 [2023-04-01 06:32:17,925 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 [2023-04-01 06:32:17,926 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 496 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:17,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1554 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:32:17,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2023-04-01 06:32:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2550. [2023-04-01 06:32:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2541 states have (on average 1.3286107831562377) internal successors, (3376), 2546 states have internal predecessors, (3376), 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) [2023-04-01 06:32:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3379 transitions. [2023-04-01 06:32:18,137 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3379 transitions. Word has length 57 [2023-04-01 06:32:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:18,138 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3379 transitions. [2023-04-01 06:32:18,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-01 06:32:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3379 transitions. [2023-04-01 06:32:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-01 06:32:18,140 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:18,140 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] [2023-04-01 06:32:18,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:32:18,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:18,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:18,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1888815628, now seen corresponding path program 1 times [2023-04-01 06:32:18,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:18,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475086102] [2023-04-01 06:32:18,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:18,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:18,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:18,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475086102] [2023-04-01 06:32:18,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475086102] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:18,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:18,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904401106] [2023-04-01 06:32:18,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:18,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:18,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:18,201 INFO L87 Difference]: Start difference. First operand 2550 states and 3379 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-01 06:32:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:18,517 INFO L93 Difference]: Finished difference Result 3606 states and 4896 transitions. [2023-04-01 06:32:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:18,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 57 [2023-04-01 06:32:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:18,524 INFO L225 Difference]: With dead ends: 3606 [2023-04-01 06:32:18,524 INFO L226 Difference]: Without dead ends: 2717 [2023-04-01 06:32:18,526 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 [2023-04-01 06:32:18,527 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 469 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1538 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2023-04-01 06:32:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2715. [2023-04-01 06:32:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2706 states have (on average 1.3333333333333333) internal successors, (3608), 2711 states have internal predecessors, (3608), 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) [2023-04-01 06:32:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3611 transitions. [2023-04-01 06:32:18,814 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3611 transitions. Word has length 57 [2023-04-01 06:32:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:18,814 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 3611 transitions. [2023-04-01 06:32:18,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-01 06:32:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3611 transitions. [2023-04-01 06:32:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-01 06:32:18,816 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:18,817 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] [2023-04-01 06:32:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:32:18,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:18,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 978401362, now seen corresponding path program 1 times [2023-04-01 06:32:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:18,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847559569] [2023-04-01 06:32:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:18,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:18,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847559569] [2023-04-01 06:32:18,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847559569] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:18,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:18,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001978633] [2023-04-01 06:32:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:18,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:18,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:18,873 INFO L87 Difference]: Start difference. First operand 2715 states and 3611 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-01 06:32:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:19,442 INFO L93 Difference]: Finished difference Result 5496 states and 7470 transitions. [2023-04-01 06:32:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 57 [2023-04-01 06:32:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:19,455 INFO L225 Difference]: With dead ends: 5496 [2023-04-01 06:32:19,455 INFO L226 Difference]: Without dead ends: 3759 [2023-04-01 06:32:19,458 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 [2023-04-01 06:32:19,459 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 542 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:19,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1702 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2023-04-01 06:32:19,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3753. [2023-04-01 06:32:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3744 states have (on average 1.3298611111111112) internal successors, (4979), 3749 states have internal predecessors, (4979), 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) [2023-04-01 06:32:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 4982 transitions. [2023-04-01 06:32:19,889 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 4982 transitions. Word has length 57 [2023-04-01 06:32:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:19,890 INFO L495 AbstractCegarLoop]: Abstraction has 3753 states and 4982 transitions. [2023-04-01 06:32:19,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2023-04-01 06:32:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 4982 transitions. [2023-04-01 06:32:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-01 06:32:19,892 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:19,892 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] [2023-04-01 06:32:19,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:32:19,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:19,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:19,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1360688730, now seen corresponding path program 1 times [2023-04-01 06:32:19,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:19,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705862287] [2023-04-01 06:32:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:19,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:19,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705862287] [2023-04-01 06:32:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705862287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699604489] [2023-04-01 06:32:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:19,937 INFO L87 Difference]: Start difference. First operand 3753 states and 4982 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-01 06:32:20,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:20,504 INFO L93 Difference]: Finished difference Result 6753 states and 9034 transitions. [2023-04-01 06:32:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:20,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-04-01 06:32:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:20,513 INFO L225 Difference]: With dead ends: 6753 [2023-04-01 06:32:20,514 INFO L226 Difference]: Without dead ends: 3493 [2023-04-01 06:32:20,517 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 [2023-04-01 06:32:20,518 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 759 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:20,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1279 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:20,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-04-01 06:32:20,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 2769. [2023-04-01 06:32:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2760 states have (on average 1.326449275362319) internal successors, (3661), 2765 states have internal predecessors, (3661), 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) [2023-04-01 06:32:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3664 transitions. [2023-04-01 06:32:20,882 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3664 transitions. Word has length 58 [2023-04-01 06:32:20,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:20,882 INFO L495 AbstractCegarLoop]: Abstraction has 2769 states and 3664 transitions. [2023-04-01 06:32:20,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-01 06:32:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3664 transitions. [2023-04-01 06:32:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-01 06:32:20,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:20,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:32:20,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:32:20,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:20,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:20,886 INFO L85 PathProgramCache]: Analyzing trace with hash -414637218, now seen corresponding path program 1 times [2023-04-01 06:32:20,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:20,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966751516] [2023-04-01 06:32:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:20,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:20,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:20,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966751516] [2023-04-01 06:32:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966751516] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:20,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:20,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954559540] [2023-04-01 06:32:20,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:20,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:20,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:20,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:20,938 INFO L87 Difference]: Start difference. First operand 2769 states and 3664 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-01 06:32:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:21,524 INFO L93 Difference]: Finished difference Result 5233 states and 7027 transitions. [2023-04-01 06:32:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-04-01 06:32:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:21,535 INFO L225 Difference]: With dead ends: 5233 [2023-04-01 06:32:21,535 INFO L226 Difference]: Without dead ends: 3002 [2023-04-01 06:32:21,540 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 [2023-04-01 06:32:21,540 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 643 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:21,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 923 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2023-04-01 06:32:21,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2415. [2023-04-01 06:32:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2407 states have (on average 1.3373493975903614) internal successors, (3219), 2411 states have internal predecessors, (3219), 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) [2023-04-01 06:32:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3222 transitions. [2023-04-01 06:32:21,877 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3222 transitions. Word has length 58 [2023-04-01 06:32:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:21,877 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 3222 transitions. [2023-04-01 06:32:21,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-01 06:32:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3222 transitions. [2023-04-01 06:32:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-01 06:32:21,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:21,879 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] [2023-04-01 06:32:21,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:32:21,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:21,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash -221824163, now seen corresponding path program 1 times [2023-04-01 06:32:21,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:21,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883687197] [2023-04-01 06:32:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:21,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883687197] [2023-04-01 06:32:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883687197] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:21,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:21,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:21,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895011457] [2023-04-01 06:32:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:21,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:21,928 INFO L87 Difference]: Start difference. First operand 2415 states and 3222 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-01 06:32:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:22,358 INFO L93 Difference]: Finished difference Result 4393 states and 5954 transitions. [2023-04-01 06:32:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:22,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 58 [2023-04-01 06:32:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:22,362 INFO L225 Difference]: With dead ends: 4393 [2023-04-01 06:32:22,362 INFO L226 Difference]: Without dead ends: 2394 [2023-04-01 06:32:22,365 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 [2023-04-01 06:32:22,366 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 488 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:22,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 721 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2023-04-01 06:32:22,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2115. [2023-04-01 06:32:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 2108 states have (on average 1.3410815939278937) internal successors, (2827), 2111 states have internal predecessors, (2827), 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) [2023-04-01 06:32:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2830 transitions. [2023-04-01 06:32:22,698 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2830 transitions. Word has length 58 [2023-04-01 06:32:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:22,698 INFO L495 AbstractCegarLoop]: Abstraction has 2115 states and 2830 transitions. [2023-04-01 06:32:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-04-01 06:32:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2830 transitions. [2023-04-01 06:32:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 06:32:22,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:22,699 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] [2023-04-01 06:32:22,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 06:32:22,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:22,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1519309459, now seen corresponding path program 1 times [2023-04-01 06:32:22,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:22,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730486274] [2023-04-01 06:32:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:22,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:23,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730486274] [2023-04-01 06:32:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730486274] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:23,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:23,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:32:23,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866173781] [2023-04-01 06:32:23,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:23,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:32:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:23,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:32:23,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:32:23,187 INFO L87 Difference]: Start difference. First operand 2115 states and 2830 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2023-04-01 06:32:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:25,565 INFO L93 Difference]: Finished difference Result 5247 states and 6996 transitions. [2023-04-01 06:32:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 06:32:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 59 [2023-04-01 06:32:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:25,572 INFO L225 Difference]: With dead ends: 5247 [2023-04-01 06:32:25,573 INFO L226 Difference]: Without dead ends: 5016 [2023-04-01 06:32:25,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2023-04-01 06:32:25,575 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 3083 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3083 SdHoareTripleChecker+Valid, 4117 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:25,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3083 Valid, 4117 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:32:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5016 states. [2023-04-01 06:32:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5016 to 2094. [2023-04-01 06:32:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2094 states, 2088 states have (on average 1.3414750957854407) internal successors, (2801), 2090 states have internal predecessors, (2801), 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) [2023-04-01 06:32:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2804 transitions. [2023-04-01 06:32:26,021 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2804 transitions. Word has length 59 [2023-04-01 06:32:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:26,021 INFO L495 AbstractCegarLoop]: Abstraction has 2094 states and 2804 transitions. [2023-04-01 06:32:26,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2023-04-01 06:32:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2804 transitions. [2023-04-01 06:32:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 06:32:26,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:26,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:32:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 06:32:26,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:26,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash -962400079, now seen corresponding path program 1 times [2023-04-01 06:32:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:26,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140209614] [2023-04-01 06:32:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:26,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:26,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140209614] [2023-04-01 06:32:26,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140209614] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:26,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:26,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-01 06:32:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782844609] [2023-04-01 06:32:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:26,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:32:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:32:26,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:32:26,766 INFO L87 Difference]: Start difference. First operand 2094 states and 2804 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2023-04-01 06:32:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:29,867 INFO L93 Difference]: Finished difference Result 4048 states and 5385 transitions. [2023-04-01 06:32:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-01 06:32:29,867 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 59 [2023-04-01 06:32:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:29,873 INFO L225 Difference]: With dead ends: 4048 [2023-04-01 06:32:29,873 INFO L226 Difference]: Without dead ends: 4044 [2023-04-01 06:32:29,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 06:32:29,875 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 2582 mSDsluCounter, 6452 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 7079 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:29,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 7079 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 06:32:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2023-04-01 06:32:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2101. [2023-04-01 06:32:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2095 states have (on average 1.3412887828162292) internal successors, (2810), 2097 states have internal predecessors, (2810), 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) [2023-04-01 06:32:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2813 transitions. [2023-04-01 06:32:30,386 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2813 transitions. Word has length 59 [2023-04-01 06:32:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:30,387 INFO L495 AbstractCegarLoop]: Abstraction has 2101 states and 2813 transitions. [2023-04-01 06:32:30,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2023-04-01 06:32:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2813 transitions. [2023-04-01 06:32:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 06:32:30,388 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:30,388 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] [2023-04-01 06:32:30,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 06:32:30,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:30,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash -97841705, now seen corresponding path program 1 times [2023-04-01 06:32:30,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:30,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279449388] [2023-04-01 06:32:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:30,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:30,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279449388] [2023-04-01 06:32:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279449388] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:30,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 06:32:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720938883] [2023-04-01 06:32:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:30,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 06:32:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:30,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 06:32:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-01 06:32:30,810 INFO L87 Difference]: Start difference. First operand 2101 states and 2813 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2023-04-01 06:32:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:32,835 INFO L93 Difference]: Finished difference Result 4582 states and 6142 transitions. [2023-04-01 06:32:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 06:32:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 59 [2023-04-01 06:32:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:32,842 INFO L225 Difference]: With dead ends: 4582 [2023-04-01 06:32:32,842 INFO L226 Difference]: Without dead ends: 4360 [2023-04-01 06:32:32,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:32:32,844 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2999 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:32,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 3613 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 06:32:32,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2023-04-01 06:32:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 2089. [2023-04-01 06:32:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2084 states have (on average 1.3416506717850287) internal successors, (2796), 2085 states have internal predecessors, (2796), 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) [2023-04-01 06:32:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2799 transitions. [2023-04-01 06:32:33,345 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2799 transitions. Word has length 59 [2023-04-01 06:32:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:33,345 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 2799 transitions. [2023-04-01 06:32:33,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2023-04-01 06:32:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2799 transitions. [2023-04-01 06:32:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-01 06:32:33,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:33,346 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] [2023-04-01 06:32:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 06:32:33,346 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:33,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 612934603, now seen corresponding path program 1 times [2023-04-01 06:32:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443498719] [2023-04-01 06:32:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:34,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:34,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443498719] [2023-04-01 06:32:34,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443498719] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:34,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-01 06:32:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357492158] [2023-04-01 06:32:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:34,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 06:32:34,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:34,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 06:32:34,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-04-01 06:32:34,032 INFO L87 Difference]: Start difference. First operand 2089 states and 2799 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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) [2023-04-01 06:32:36,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:36,966 INFO L93 Difference]: Finished difference Result 4030 states and 5374 transitions. [2023-04-01 06:32:36,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 06:32:36,966 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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 60 [2023-04-01 06:32:36,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:36,974 INFO L225 Difference]: With dead ends: 4030 [2023-04-01 06:32:36,974 INFO L226 Difference]: Without dead ends: 4026 [2023-04-01 06:32:36,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2023-04-01 06:32:36,976 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 3213 mSDsluCounter, 5046 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 5705 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:36,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3213 Valid, 5705 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:32:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2023-04-01 06:32:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 2078. [2023-04-01 06:32:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 2074 states have (on average 1.3418514946962392) internal successors, (2783), 2074 states have internal predecessors, (2783), 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) [2023-04-01 06:32:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2786 transitions. [2023-04-01 06:32:37,548 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2786 transitions. Word has length 60 [2023-04-01 06:32:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:37,559 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2786 transitions. [2023-04-01 06:32:37,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 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) [2023-04-01 06:32:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2786 transitions. [2023-04-01 06:32:37,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-01 06:32:37,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:37,561 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] [2023-04-01 06:32:37,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-01 06:32:37,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:37,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2014005002, now seen corresponding path program 1 times [2023-04-01 06:32:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:37,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153427637] [2023-04-01 06:32:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:37,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:37,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153427637] [2023-04-01 06:32:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153427637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:37,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:32:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371190033] [2023-04-01 06:32:37,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:37,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:32:37,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:32:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:32:37,645 INFO L87 Difference]: Start difference. First operand 2078 states and 2786 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2023-04-01 06:32:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:38,258 INFO L93 Difference]: Finished difference Result 3468 states and 4721 transitions. [2023-04-01 06:32:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:32:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 62 [2023-04-01 06:32:38,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:38,261 INFO L225 Difference]: With dead ends: 3468 [2023-04-01 06:32:38,261 INFO L226 Difference]: Without dead ends: 1874 [2023-04-01 06:32:38,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:32:38,263 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 808 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:38,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 667 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:38,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2023-04-01 06:32:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1870. [2023-04-01 06:32:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1866 states have (on average 1.330117899249732) internal successors, (2482), 1866 states have internal predecessors, (2482), 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) [2023-04-01 06:32:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2485 transitions. [2023-04-01 06:32:38,818 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2485 transitions. Word has length 62 [2023-04-01 06:32:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:38,818 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2485 transitions. [2023-04-01 06:32:38,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2023-04-01 06:32:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2485 transitions. [2023-04-01 06:32:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-01 06:32:38,819 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:38,819 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] [2023-04-01 06:32:38,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-01 06:32:38,819 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:38,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1858428413, now seen corresponding path program 1 times [2023-04-01 06:32:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:38,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263988440] [2023-04-01 06:32:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:38,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:38,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263988440] [2023-04-01 06:32:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263988440] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:38,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3958215] [2023-04-01 06:32:38,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:38,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:38,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:38,919 INFO L87 Difference]: Start difference. First operand 1870 states and 2485 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-04-01 06:32:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:39,754 INFO L93 Difference]: Finished difference Result 3942 states and 5377 transitions. [2023-04-01 06:32:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:39,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 62 [2023-04-01 06:32:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:39,757 INFO L225 Difference]: With dead ends: 3942 [2023-04-01 06:32:39,757 INFO L226 Difference]: Without dead ends: 2652 [2023-04-01 06:32:39,759 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 [2023-04-01 06:32:39,760 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 281 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:39,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 694 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:32:39,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2023-04-01 06:32:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2420. [2023-04-01 06:32:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2416 states have (on average 1.3331953642384107) internal successors, (3221), 2416 states have internal predecessors, (3221), 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) [2023-04-01 06:32:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3224 transitions. [2023-04-01 06:32:40,475 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3224 transitions. Word has length 62 [2023-04-01 06:32:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:40,475 INFO L495 AbstractCegarLoop]: Abstraction has 2420 states and 3224 transitions. [2023-04-01 06:32:40,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-04-01 06:32:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3224 transitions. [2023-04-01 06:32:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-01 06:32:40,476 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:40,476 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] [2023-04-01 06:32:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-01 06:32:40,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:40,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:40,476 INFO L85 PathProgramCache]: Analyzing trace with hash 888754277, now seen corresponding path program 1 times [2023-04-01 06:32:40,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750979478] [2023-04-01 06:32:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:40,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:40,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:40,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750979478] [2023-04-01 06:32:40,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750979478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:40,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:40,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:32:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684718029] [2023-04-01 06:32:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:32:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:32:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:32:40,568 INFO L87 Difference]: Start difference. First operand 2420 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-04-01 06:32:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:41,737 INFO L93 Difference]: Finished difference Result 5363 states and 7301 transitions. [2023-04-01 06:32:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:32:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 64 [2023-04-01 06:32:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:41,741 INFO L225 Difference]: With dead ends: 5363 [2023-04-01 06:32:41,741 INFO L226 Difference]: Without dead ends: 3575 [2023-04-01 06:32:41,743 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 [2023-04-01 06:32:41,744 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 231 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:41,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 723 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:32:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2023-04-01 06:32:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3221. [2023-04-01 06:32:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3217 states have (on average 1.3307429281939696) internal successors, (4281), 3217 states have internal predecessors, (4281), 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) [2023-04-01 06:32:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4284 transitions. [2023-04-01 06:32:42,759 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4284 transitions. Word has length 64 [2023-04-01 06:32:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:42,759 INFO L495 AbstractCegarLoop]: Abstraction has 3221 states and 4284 transitions. [2023-04-01 06:32:42,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-04-01 06:32:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4284 transitions. [2023-04-01 06:32:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 06:32:42,760 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:42,760 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] [2023-04-01 06:32:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-01 06:32:42,761 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:42,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1689320339, now seen corresponding path program 1 times [2023-04-01 06:32:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119435539] [2023-04-01 06:32:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:43,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119435539] [2023-04-01 06:32:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119435539] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:43,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:43,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:32:43,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332775212] [2023-04-01 06:32:43,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:43,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:32:43,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:43,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:32:43,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:32:43,031 INFO L87 Difference]: Start difference. First operand 3221 states and 4284 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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) [2023-04-01 06:32:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:46,033 INFO L93 Difference]: Finished difference Result 7317 states and 9721 transitions. [2023-04-01 06:32:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 06:32:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 68 [2023-04-01 06:32:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:46,042 INFO L225 Difference]: With dead ends: 7317 [2023-04-01 06:32:46,042 INFO L226 Difference]: Without dead ends: 7315 [2023-04-01 06:32:46,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-04-01 06:32:46,044 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1975 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:46,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1975 Valid, 2298 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2023-04-01 06:32:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 3745. [2023-04-01 06:32:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 3741 states have (on average 1.3242448543170275) internal successors, (4954), 3741 states have internal predecessors, (4954), 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) [2023-04-01 06:32:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 4957 transitions. [2023-04-01 06:32:47,456 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 4957 transitions. Word has length 68 [2023-04-01 06:32:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:47,457 INFO L495 AbstractCegarLoop]: Abstraction has 3745 states and 4957 transitions. [2023-04-01 06:32:47,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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) [2023-04-01 06:32:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 4957 transitions. [2023-04-01 06:32:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-01 06:32:47,459 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:47,459 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] [2023-04-01 06:32:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-01 06:32:47,459 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:47,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2023776267, now seen corresponding path program 1 times [2023-04-01 06:32:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090842232] [2023-04-01 06:32:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:47,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090842232] [2023-04-01 06:32:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090842232] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:47,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:32:47,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450317362] [2023-04-01 06:32:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:47,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:32:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:47,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:32:47,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:32:47,723 INFO L87 Difference]: Start difference. First operand 3745 states and 4957 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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) [2023-04-01 06:32:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:50,758 INFO L93 Difference]: Finished difference Result 7188 states and 9555 transitions. [2023-04-01 06:32:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:32:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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 74 [2023-04-01 06:32:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:50,766 INFO L225 Difference]: With dead ends: 7188 [2023-04-01 06:32:50,767 INFO L226 Difference]: Without dead ends: 7186 [2023-04-01 06:32:50,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:32:50,768 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 1422 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:50,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 2463 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2023-04-01 06:32:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 4037. [2023-04-01 06:32:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4037 states, 4033 states have (on average 1.3208529630547978) internal successors, (5327), 4033 states have internal predecessors, (5327), 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) [2023-04-01 06:32:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 5330 transitions. [2023-04-01 06:32:52,408 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 5330 transitions. Word has length 74 [2023-04-01 06:32:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:52,408 INFO L495 AbstractCegarLoop]: Abstraction has 4037 states and 5330 transitions. [2023-04-01 06:32:52,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 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) [2023-04-01 06:32:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 5330 transitions. [2023-04-01 06:32:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:32:52,409 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:52,410 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] [2023-04-01 06:32:52,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-01 06:32:52,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:52,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1755422745, now seen corresponding path program 1 times [2023-04-01 06:32:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:52,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196921388] [2023-04-01 06:32:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:52,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:52,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196921388] [2023-04-01 06:32:52,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196921388] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:52,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:52,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:32:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888135408] [2023-04-01 06:32:52,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:52,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:32:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:32:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:32:52,714 INFO L87 Difference]: Start difference. First operand 4037 states and 5330 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2023-04-01 06:32:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:32:55,910 INFO L93 Difference]: Finished difference Result 7245 states and 9622 transitions. [2023-04-01 06:32:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 06:32:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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 75 [2023-04-01 06:32:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:32:55,920 INFO L225 Difference]: With dead ends: 7245 [2023-04-01 06:32:55,920 INFO L226 Difference]: Without dead ends: 7243 [2023-04-01 06:32:55,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:32:55,921 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1386 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:32:55,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 2600 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:32:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7243 states. [2023-04-01 06:32:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7243 to 4327. [2023-04-01 06:32:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4323 states have (on average 1.3180661577608141) internal successors, (5698), 4323 states have internal predecessors, (5698), 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) [2023-04-01 06:32:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 5701 transitions. [2023-04-01 06:32:57,753 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 5701 transitions. Word has length 75 [2023-04-01 06:32:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:32:57,753 INFO L495 AbstractCegarLoop]: Abstraction has 4327 states and 5701 transitions. [2023-04-01 06:32:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2023-04-01 06:32:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 5701 transitions. [2023-04-01 06:32:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:32:57,755 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:32:57,755 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] [2023-04-01 06:32:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-01 06:32:57,756 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:32:57,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:32:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1372577165, now seen corresponding path program 1 times [2023-04-01 06:32:57,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:32:57,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730253540] [2023-04-01 06:32:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:32:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:32:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:32:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:32:58,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:32:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730253540] [2023-04-01 06:32:58,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730253540] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:32:58,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:32:58,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 06:32:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315193173] [2023-04-01 06:32:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:32:58,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 06:32:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:32:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 06:32:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-01 06:32:58,015 INFO L87 Difference]: Start difference. First operand 4327 states and 5701 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2023-04-01 06:33:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:33:01,140 INFO L93 Difference]: Finished difference Result 6814 states and 9036 transitions. [2023-04-01 06:33:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-01 06:33:01,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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 75 [2023-04-01 06:33:01,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:33:01,148 INFO L225 Difference]: With dead ends: 6814 [2023-04-01 06:33:01,148 INFO L226 Difference]: Without dead ends: 6812 [2023-04-01 06:33:01,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2023-04-01 06:33:01,149 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1573 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:33:01,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 2379 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:33:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6812 states.