/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:34:54,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:34:54,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:34:55,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:34:55,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:34:55,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:34:55,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:34:55,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:34:55,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:34:55,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:34:55,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:34:55,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:34:55,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:34:55,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:34:55,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:34:55,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:34:55,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:34:55,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:34:55,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:34:55,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:34:55,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:34:55,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:34:55,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:34:55,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:34:55,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:34:55,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:34:55,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:34:55,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:34:55,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:34:55,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:34:55,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:34:55,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:34:55,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:34:55,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:34:55,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:34:55,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:34:55,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:34:55,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:34:55,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:34:55,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:34:55,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:34:55,067 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 06:34:55,097 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:34:55,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:34:55,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:34:55,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:34:55,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:34:55,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:34:55,099 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:34:55,099 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:34:55,099 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:34:55,099 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:34:55,100 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:34:55,100 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:34:55,100 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:34:55,100 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:34:55,100 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:34:55,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:34:55,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:34:55,101 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:34:55,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:34:55,101 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:34:55,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:34:55,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:34:55,102 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:34:55,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:34:55,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:34:55,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:34:55,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:34:55,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:34:55,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:34:55,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:34:55,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:34:55,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:34:55,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:34:55,364 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:34:55,365 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:34:55,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:34:56,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:34:57,057 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:34:57,058 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:34:57,094 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6131b6341/9e9d5b3780854109b2cfc23639d89826/FLAGe38bce031 [2023-04-01 06:34:57,114 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6131b6341/9e9d5b3780854109b2cfc23639d89826 [2023-04-01 06:34:57,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:34:57,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:34:57,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:34:57,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:34:57,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:34:57,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:34:57" (1/1) ... [2023-04-01 06:34:57,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47346356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:57, skipping insertion in model container [2023-04-01 06:34:57,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:34:57" (1/1) ... [2023-04-01 06:34:57,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:34:57,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:34:57,623 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13606,13619] [2023-04-01 06:34:57,650 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19227,19240] [2023-04-01 06:34:57,657 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20416,20429] [2023-04-01 06:34:57,670 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22562,22575] [2023-04-01 06:34:57,687 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25842,25855] [2023-04-01 06:34:57,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32130,32143] [2023-04-01 06:34:58,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:34:58,232 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:34:58,295 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13606,13619] [2023-04-01 06:34:58,311 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19227,19240] [2023-04-01 06:34:58,315 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20416,20429] [2023-04-01 06:34:58,320 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22562,22575] [2023-04-01 06:34:58,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25842,25855] [2023-04-01 06:34:58,342 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32130,32143] [2023-04-01 06:34:58,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:34:58,660 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:34:58,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58 WrapperNode [2023-04-01 06:34:58,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:34:58,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:34:58,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:34:58,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:34:58,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:34:58,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:34:58,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:34:58,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:34:58,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (1/1) ... [2023-04-01 06:34:58,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:34:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:34:58,951 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 06:34:58,953 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 06:34:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:34:58,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:34:58,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:34:58,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:34:58,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:34:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:34:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:34:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:34:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:34:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:34:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:34:58,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:34:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:34:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:34:59,403 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:34:59,405 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:35:02,817 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:35:03,197 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:35:03,198 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:35:03,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:35:03 BoogieIcfgContainer [2023-04-01 06:35:03,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:35:03,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:35:03,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:35:03,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:35:03,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:34:57" (1/3) ... [2023-04-01 06:35:03,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e53d399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:35:03, skipping insertion in model container [2023-04-01 06:35:03,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:58" (2/3) ... [2023-04-01 06:35:03,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e53d399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:35:03, skipping insertion in model container [2023-04-01 06:35:03,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:35:03" (3/3) ... [2023-04-01 06:35:03,213 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 06:35:03,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:35:03,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-01 06:35:03,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:35:03,317 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;@36b7895d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:35:03,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-01 06:35:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 1704 states, 1693 states have (on average 1.8009450679267571) internal successors, (3049), 1699 states have internal predecessors, (3049), 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 06:35:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 06:35:03,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:03,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:03,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:03,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1769767039, now seen corresponding path program 1 times [2023-04-01 06:35:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:03,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620688963] [2023-04-01 06:35:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:03,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:04,194 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 06:35:04,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:04,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620688963] [2023-04-01 06:35:04,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620688963] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:04,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:04,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:35:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624045028] [2023-04-01 06:35:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:04,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:35:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:04,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:35:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:35:04,242 INFO L87 Difference]: Start difference. First operand has 1704 states, 1693 states have (on average 1.8009450679267571) internal successors, (3049), 1699 states have internal predecessors, (3049), 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 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 06:35:05,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:05,527 INFO L93 Difference]: Finished difference Result 2643 states and 4671 transitions. [2023-04-01 06:35:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:35:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 78 [2023-04-01 06:35:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:05,547 INFO L225 Difference]: With dead ends: 2643 [2023-04-01 06:35:05,547 INFO L226 Difference]: Without dead ends: 1436 [2023-04-01 06:35:05,560 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 06:35:05,563 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 7100 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7100 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:05,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7100 Valid, 1613 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-01 06:35:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-04-01 06:35:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1426. [2023-04-01 06:35:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1417 states have (on average 1.3465067043048695) internal successors, (1908), 1422 states have internal predecessors, (1908), 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 06:35:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1911 transitions. [2023-04-01 06:35:05,680 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1911 transitions. Word has length 78 [2023-04-01 06:35:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:05,681 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 1911 transitions. [2023-04-01 06:35:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 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 06:35:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1911 transitions. [2023-04-01 06:35:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 06:35:05,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:05,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:35:05,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:05,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:05,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1380769469, now seen corresponding path program 1 times [2023-04-01 06:35:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565360799] [2023-04-01 06:35:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:05,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:06,026 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 06:35:06,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565360799] [2023-04-01 06:35:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565360799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:06,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:35:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939259371] [2023-04-01 06:35:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:35:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:35:06,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:35:06,030 INFO L87 Difference]: Start difference. First operand 1426 states and 1911 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 06:35:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:06,828 INFO L93 Difference]: Finished difference Result 2481 states and 3403 transitions. [2023-04-01 06:35:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:35:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 79 [2023-04-01 06:35:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:06,853 INFO L225 Difference]: With dead ends: 2481 [2023-04-01 06:35:06,853 INFO L226 Difference]: Without dead ends: 1436 [2023-04-01 06:35:06,855 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 06:35:06,856 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 4183 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4183 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:06,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4183 Valid, 891 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 06:35:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-04-01 06:35:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1426. [2023-04-01 06:35:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1417 states have (on average 1.3796753705010585) internal successors, (1955), 1422 states have internal predecessors, (1955), 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 06:35:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1958 transitions. [2023-04-01 06:35:06,921 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1958 transitions. Word has length 79 [2023-04-01 06:35:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:06,922 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 1958 transitions. [2023-04-01 06:35:06,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 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 06:35:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1958 transitions. [2023-04-01 06:35:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:35:06,925 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:06,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:06,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:35:06,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:06,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash 349666696, now seen corresponding path program 1 times [2023-04-01 06:35:06,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:06,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766565017] [2023-04-01 06:35:06,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:06,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:07,111 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 06:35:07,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:07,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766565017] [2023-04-01 06:35:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766565017] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:07,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:07,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:35:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339086603] [2023-04-01 06:35:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:07,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:35:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:35:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:35:07,113 INFO L87 Difference]: Start difference. First operand 1426 states and 1958 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:07,330 INFO L93 Difference]: Finished difference Result 2697 states and 3770 transitions. [2023-04-01 06:35:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:35:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-01 06:35:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:07,339 INFO L225 Difference]: With dead ends: 2697 [2023-04-01 06:35:07,339 INFO L226 Difference]: Without dead ends: 2149 [2023-04-01 06:35:07,341 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 06:35:07,342 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 1037 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:07,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 2494 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:35:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2023-04-01 06:35:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2139. [2023-04-01 06:35:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2130 states have (on average 1.3826291079812207) internal successors, (2945), 2135 states have internal predecessors, (2945), 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 06:35:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2948 transitions. [2023-04-01 06:35:07,455 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2948 transitions. Word has length 80 [2023-04-01 06:35:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:07,456 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2948 transitions. [2023-04-01 06:35:07,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2948 transitions. [2023-04-01 06:35:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:35:07,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:07,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:07,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:35:07,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:07,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1896033491, now seen corresponding path program 1 times [2023-04-01 06:35:07,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:07,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162091698] [2023-04-01 06:35:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:07,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:07,587 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 06:35:07,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:07,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162091698] [2023-04-01 06:35:07,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162091698] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:07,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:07,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:35:07,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666659640] [2023-04-01 06:35:07,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:07,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:35:07,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:07,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:35:07,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:35:07,589 INFO L87 Difference]: Start difference. First operand 2139 states and 2948 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:07,877 INFO L93 Difference]: Finished difference Result 3991 states and 5647 transitions. [2023-04-01 06:35:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:35:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-01 06:35:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:07,890 INFO L225 Difference]: With dead ends: 3991 [2023-04-01 06:35:07,890 INFO L226 Difference]: Without dead ends: 3011 [2023-04-01 06:35:07,893 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 06:35:07,898 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 662 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:07,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2214 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:35:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2023-04-01 06:35:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 3001. [2023-04-01 06:35:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2992 states have (on average 1.3950534759358288) internal successors, (4174), 2997 states have internal predecessors, (4174), 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 06:35:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4177 transitions. [2023-04-01 06:35:08,089 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4177 transitions. Word has length 80 [2023-04-01 06:35:08,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:08,089 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 4177 transitions. [2023-04-01 06:35:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4177 transitions. [2023-04-01 06:35:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:35:08,094 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:08,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:08,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:35:08,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:08,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1546798832, now seen corresponding path program 1 times [2023-04-01 06:35:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121550035] [2023-04-01 06:35:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:08,286 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 06:35:08,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:08,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121550035] [2023-04-01 06:35:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121550035] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:08,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:35:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879545576] [2023-04-01 06:35:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:08,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:35:08,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:35:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:35:08,296 INFO L87 Difference]: Start difference. First operand 3001 states and 4177 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:08,826 INFO L93 Difference]: Finished difference Result 6161 states and 8610 transitions. [2023-04-01 06:35:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:35:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-01 06:35:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:08,848 INFO L225 Difference]: With dead ends: 6161 [2023-04-01 06:35:08,848 INFO L226 Difference]: Without dead ends: 4830 [2023-04-01 06:35:08,855 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 06:35:08,856 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 741 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:08,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 2250 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:35:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4830 states. [2023-04-01 06:35:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4830 to 4820. [2023-04-01 06:35:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4811 states have (on average 1.3768447308251923) internal successors, (6624), 4816 states have internal predecessors, (6624), 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 06:35:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 6627 transitions. [2023-04-01 06:35:09,291 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 6627 transitions. Word has length 80 [2023-04-01 06:35:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:09,292 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 6627 transitions. [2023-04-01 06:35:09,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 6627 transitions. [2023-04-01 06:35:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:35:09,304 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:09,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:09,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:35:09,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:09,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1938530418, now seen corresponding path program 1 times [2023-04-01 06:35:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:09,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185056999] [2023-04-01 06:35:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:09,437 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 06:35:09,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:09,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185056999] [2023-04-01 06:35:09,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185056999] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:09,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:09,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:35:09,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329588771] [2023-04-01 06:35:09,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:09,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:35:09,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:09,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:35:09,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:35:09,440 INFO L87 Difference]: Start difference. First operand 4820 states and 6627 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:10,104 INFO L93 Difference]: Finished difference Result 10339 states and 14410 transitions. [2023-04-01 06:35:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:35:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-01 06:35:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:10,132 INFO L225 Difference]: With dead ends: 10339 [2023-04-01 06:35:10,132 INFO L226 Difference]: Without dead ends: 7478 [2023-04-01 06:35:10,139 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 06:35:10,140 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1056 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:10,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 2508 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:35:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2023-04-01 06:35:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 7468. [2023-04-01 06:35:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7468 states, 7459 states have (on average 1.3764579702372972) internal successors, (10267), 7464 states have internal predecessors, (10267), 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 06:35:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7468 states to 7468 states and 10270 transitions. [2023-04-01 06:35:10,925 INFO L78 Accepts]: Start accepts. Automaton has 7468 states and 10270 transitions. Word has length 80 [2023-04-01 06:35:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:10,926 INFO L495 AbstractCegarLoop]: Abstraction has 7468 states and 10270 transitions. [2023-04-01 06:35:10,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7468 states and 10270 transitions. [2023-04-01 06:35:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:35:10,938 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:10,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:35:10,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:10,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1306175054, now seen corresponding path program 1 times [2023-04-01 06:35:10,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:10,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605926280] [2023-04-01 06:35:10,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:11,072 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 06:35:11,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:11,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605926280] [2023-04-01 06:35:11,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605926280] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:11,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:11,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 06:35:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939410973] [2023-04-01 06:35:11,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:11,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 06:35:11,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:11,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 06:35:11,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 06:35:11,075 INFO L87 Difference]: Start difference. First operand 7468 states and 10270 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:12,131 INFO L93 Difference]: Finished difference Result 17351 states and 24299 transitions. [2023-04-01 06:35:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 06:35:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 80 [2023-04-01 06:35:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:12,184 INFO L225 Difference]: With dead ends: 17351 [2023-04-01 06:35:12,184 INFO L226 Difference]: Without dead ends: 11670 [2023-04-01 06:35:12,198 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 06:35:12,199 INFO L413 NwaCegarLoop]: 1278 mSDtfsCounter, 661 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:12,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 2128 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 06:35:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11670 states. [2023-04-01 06:35:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11670 to 11660. [2023-04-01 06:35:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11660 states, 11651 states have (on average 1.3851171573255514) internal successors, (16138), 11656 states have internal predecessors, (16138), 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 06:35:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 16141 transitions. [2023-04-01 06:35:13,503 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 16141 transitions. Word has length 80 [2023-04-01 06:35:13,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:13,503 INFO L495 AbstractCegarLoop]: Abstraction has 11660 states and 16141 transitions. [2023-04-01 06:35:13,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 06:35:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 16141 transitions. [2023-04-01 06:35:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 06:35:13,516 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:13,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:13,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:35:13,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:13,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:13,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1626591846, now seen corresponding path program 1 times [2023-04-01 06:35:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:13,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579405711] [2023-04-01 06:35:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:13,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:35:13,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579405711] [2023-04-01 06:35:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579405711] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:13,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:13,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:35:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163033721] [2023-04-01 06:35:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:13,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:35:13,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:35:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:35:13,728 INFO L87 Difference]: Start difference. First operand 11660 states and 16141 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 06:35:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:15,931 INFO L93 Difference]: Finished difference Result 28445 states and 39759 transitions. [2023-04-01 06:35:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:35:15,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 80 [2023-04-01 06:35:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:15,982 INFO L225 Difference]: With dead ends: 28445 [2023-04-01 06:35:15,982 INFO L226 Difference]: Without dead ends: 17754 [2023-04-01 06:35:16,006 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 06:35:16,006 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 3593 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:16,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3593 Valid, 755 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 06:35:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17754 states. [2023-04-01 06:35:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17754 to 17744. [2023-04-01 06:35:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17744 states, 17735 states have (on average 1.3898505779532) internal successors, (24649), 17740 states have internal predecessors, (24649), 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 06:35:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17744 states to 17744 states and 24652 transitions. [2023-04-01 06:35:17,997 INFO L78 Accepts]: Start accepts. Automaton has 17744 states and 24652 transitions. Word has length 80 [2023-04-01 06:35:17,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:17,997 INFO L495 AbstractCegarLoop]: Abstraction has 17744 states and 24652 transitions. [2023-04-01 06:35:17,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 06:35:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17744 states and 24652 transitions. [2023-04-01 06:35:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:35:18,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:18,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:35:18,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:18,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1126007339, now seen corresponding path program 1 times [2023-04-01 06:35:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:18,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056356437] [2023-04-01 06:35:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:18,287 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 06:35:18,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:18,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056356437] [2023-04-01 06:35:18,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056356437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:18,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:18,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:35:18,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258985956] [2023-04-01 06:35:18,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:18,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:35:18,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:35:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:35:18,290 INFO L87 Difference]: Start difference. First operand 17744 states and 24652 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:35:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:25,994 INFO L93 Difference]: Finished difference Result 74956 states and 105538 transitions. [2023-04-01 06:35:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:35:25,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 06:35:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:26,215 INFO L225 Difference]: With dead ends: 74956 [2023-04-01 06:35:26,215 INFO L226 Difference]: Without dead ends: 68855 [2023-04-01 06:35:26,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:35:26,260 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 6390 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6390 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:26,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6390 Valid, 1574 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 06:35:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68855 states. [2023-04-01 06:35:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68855 to 17792. [2023-04-01 06:35:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17792 states, 17783 states have (on average 1.3896980262048024) internal successors, (24713), 17788 states have internal predecessors, (24713), 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 06:35:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17792 states to 17792 states and 24716 transitions. [2023-04-01 06:35:29,043 INFO L78 Accepts]: Start accepts. Automaton has 17792 states and 24716 transitions. Word has length 81 [2023-04-01 06:35:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:29,044 INFO L495 AbstractCegarLoop]: Abstraction has 17792 states and 24716 transitions. [2023-04-01 06:35:29,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:35:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 17792 states and 24716 transitions. [2023-04-01 06:35:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:35:29,057 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:29,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:35:29,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:29,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -76355239, now seen corresponding path program 1 times [2023-04-01 06:35:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045975863] [2023-04-01 06:35:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:29,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:29,319 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 06:35:29,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:29,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045975863] [2023-04-01 06:35:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045975863] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:29,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:35:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652102295] [2023-04-01 06:35:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:29,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:35:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:35:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:35:29,321 INFO L87 Difference]: Start difference. First operand 17792 states and 24716 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:35:40,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:40,426 INFO L93 Difference]: Finished difference Result 77459 states and 108950 transitions. [2023-04-01 06:35:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 06:35:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-01 06:35:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:40,617 INFO L225 Difference]: With dead ends: 77459 [2023-04-01 06:35:40,617 INFO L226 Difference]: Without dead ends: 71095 [2023-04-01 06:35:40,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 06:35:40,656 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 5922 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5922 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:40,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5922 Valid, 1556 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 06:35:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71095 states. [2023-04-01 06:35:43,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71095 to 17972. [2023-04-01 06:35:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17972 states, 17963 states have (on average 1.3891332182820242) internal successors, (24953), 17968 states have internal predecessors, (24953), 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 06:35:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17972 states to 17972 states and 24956 transitions. [2023-04-01 06:35:43,944 INFO L78 Accepts]: Start accepts. Automaton has 17972 states and 24956 transitions. Word has length 81 [2023-04-01 06:35:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:43,944 INFO L495 AbstractCegarLoop]: Abstraction has 17972 states and 24956 transitions. [2023-04-01 06:35:43,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 06:35:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 17972 states and 24956 transitions. [2023-04-01 06:35:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 06:35:43,957 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:43,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 06:35:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:35:43,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-01 06:35:43,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash 162280654, now seen corresponding path program 1 times [2023-04-01 06:35:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223552545] [2023-04-01 06:35:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:44,187 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 06:35:44,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223552545] [2023-04-01 06:35:44,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223552545] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:44,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:44,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:35:44,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838519326] [2023-04-01 06:35:44,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:44,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:35:44,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:35:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:35:44,189 INFO L87 Difference]: Start difference. First operand 17972 states and 24956 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)