/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 IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:23:33,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:23:33,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:23:33,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:23:33,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:23:33,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:23:33,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:23:33,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:23:33,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:23:33,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:23:33,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:23:33,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:23:33,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:23:33,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:23:33,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:23:33,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:23:33,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:23:33,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:23:33,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:23:33,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:23:33,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:23:33,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:23:33,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:23:33,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:23:34,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 00:23:34,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:23:34,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:23:34,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:23:34,011 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 00:23:34,031 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:23:34,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:23:34,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:23:34,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:23:34,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:23:34,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:23:34,037 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:23:34,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:23:34,037 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:23:34,037 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:23:34,037 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:23:34,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:23:34,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:23:34,038 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:23:34,038 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:23:34,038 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:23:34,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:23:34,038 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:23:34,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:23:34,039 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:23:34,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:23:34,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:23:34,040 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:23:34,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:23:34,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:23:34,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:23:34,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:23:34,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:23:34,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:23:34,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:23:34,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:23:34,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:23:34,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:23:34,291 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:23:34,291 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:23:34,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:23:35,431 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:23:35,705 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:23:35,706 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:23:35,732 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745503a6a/f4505c57e0c84adb8744b34705393ce7/FLAG9127d2471 [2023-04-01 00:23:35,752 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/745503a6a/f4505c57e0c84adb8744b34705393ce7 [2023-04-01 00:23:35,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:23:35,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:23:35,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:23:35,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:23:35,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:23:35,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:23:35" (1/1) ... [2023-04-01 00:23:35,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101b9345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:35, skipping insertion in model container [2023-04-01 00:23:35,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:23:35" (1/1) ... [2023-04-01 00:23:35,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:23:35,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:23:36,103 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2023-04-01 00:23:36,127 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2023-04-01 00:23:36,140 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2023-04-01 00:23:36,163 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2023-04-01 00:23:36,209 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2023-04-01 00:23:36,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:23:36,273 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:23:36,345 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2023-04-01 00:23:36,350 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2023-04-01 00:23:36,358 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2023-04-01 00:23:36,365 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2023-04-01 00:23:36,418 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2023-04-01 00:23:36,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:23:36,463 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:23:36,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36 WrapperNode [2023-04-01 00:23:36,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:23:36,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:23:36,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:23:36,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:23:36,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:23:36,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:23:36,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:23:36,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:23:36,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (1/1) ... [2023-04-01 00:23:36,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:23:36,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:23:36,653 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 00:23:36,677 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 00:23:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:23:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:23:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:23:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:23:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:23:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:23:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:23:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:23:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:23:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:23:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:23:36,700 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:23:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:23:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:23:36,873 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:23:36,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:23:38,007 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:23:38,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:23:38,386 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:23:38,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:23:38 BoogieIcfgContainer [2023-04-01 00:23:38,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:23:38,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:23:38,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:23:38,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:23:38,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:23:35" (1/3) ... [2023-04-01 00:23:38,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27876b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:23:38, skipping insertion in model container [2023-04-01 00:23:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:23:36" (2/3) ... [2023-04-01 00:23:38,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27876b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:23:38, skipping insertion in model container [2023-04-01 00:23:38,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:23:38" (3/3) ... [2023-04-01 00:23:38,401 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-01 00:23:38,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:23:38,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-04-01 00:23:38,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:23:38,492 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;@77565977, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:23:38,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-04-01 00:23:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 287 states have (on average 1.7979094076655053) internal successors, (516), 298 states have internal predecessors, (516), 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 00:23:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-01 00:23:38,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:38,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:38,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:38,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash -737281490, now seen corresponding path program 1 times [2023-04-01 00:23:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:38,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214775415] [2023-04-01 00:23:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:38,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:39,924 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 00:23:39,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214775415] [2023-04-01 00:23:39,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214775415] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:39,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:39,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502367327] [2023-04-01 00:23:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:39,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:39,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:39,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:39,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:39,985 INFO L87 Difference]: Start difference. First operand has 303 states, 287 states have (on average 1.7979094076655053) internal successors, (516), 298 states have internal predecessors, (516), 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 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 00:23:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:40,404 INFO L93 Difference]: Finished difference Result 823 states and 1364 transitions. [2023-04-01 00:23:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:40,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 120 [2023-04-01 00:23:40,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:40,426 INFO L225 Difference]: With dead ends: 823 [2023-04-01 00:23:40,426 INFO L226 Difference]: Without dead ends: 599 [2023-04-01 00:23:40,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:40,437 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 664 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:40,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1646 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:23:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-04-01 00:23:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 554. [2023-04-01 00:23:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 546 states have (on average 1.335164835164835) internal successors, (729), 550 states have internal predecessors, (729), 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 00:23:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 732 transitions. [2023-04-01 00:23:40,521 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 732 transitions. Word has length 120 [2023-04-01 00:23:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:40,522 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 732 transitions. [2023-04-01 00:23:40,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 00:23:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 732 transitions. [2023-04-01 00:23:40,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-01 00:23:40,524 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:40,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:40,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:23:40,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:40,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -301814317, now seen corresponding path program 1 times [2023-04-01 00:23:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193610914] [2023-04-01 00:23:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:40,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:41,222 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 00:23:41,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193610914] [2023-04-01 00:23:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193610914] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:41,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582932237] [2023-04-01 00:23:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:41,227 INFO L87 Difference]: Start difference. First operand 554 states and 732 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 00:23:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:41,521 INFO L93 Difference]: Finished difference Result 1379 states and 1838 transitions. [2023-04-01 00:23:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:41,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 120 [2023-04-01 00:23:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:41,528 INFO L225 Difference]: With dead ends: 1379 [2023-04-01 00:23:41,528 INFO L226 Difference]: Without dead ends: 980 [2023-04-01 00:23:41,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:41,534 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 627 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:41,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1053 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:23:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-04-01 00:23:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 912. [2023-04-01 00:23:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 904 states have (on average 1.336283185840708) internal successors, (1208), 908 states have internal predecessors, (1208), 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 00:23:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1211 transitions. [2023-04-01 00:23:41,613 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1211 transitions. Word has length 120 [2023-04-01 00:23:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:41,615 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1211 transitions. [2023-04-01 00:23:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 00:23:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1211 transitions. [2023-04-01 00:23:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-01 00:23:41,625 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:41,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:41,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:23:41,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:41,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1935687146, now seen corresponding path program 1 times [2023-04-01 00:23:41,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:41,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260710422] [2023-04-01 00:23:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:41,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:42,322 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 00:23:42,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260710422] [2023-04-01 00:23:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260710422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:42,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:42,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:42,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50710899] [2023-04-01 00:23:42,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:42,328 INFO L87 Difference]: Start difference. First operand 912 states and 1211 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 00:23:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:42,550 INFO L93 Difference]: Finished difference Result 1848 states and 2496 transitions. [2023-04-01 00:23:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 120 [2023-04-01 00:23:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:42,557 INFO L225 Difference]: With dead ends: 1848 [2023-04-01 00:23:42,558 INFO L226 Difference]: Without dead ends: 1190 [2023-04-01 00:23:42,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:42,563 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1200 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:42,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 704 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2023-04-01 00:23:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1168. [2023-04-01 00:23:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1160 states have (on average 1.3629310344827585) internal successors, (1581), 1164 states have internal predecessors, (1581), 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 00:23:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1584 transitions. [2023-04-01 00:23:42,696 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1584 transitions. Word has length 120 [2023-04-01 00:23:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:42,696 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1584 transitions. [2023-04-01 00:23:42,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 00:23:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1584 transitions. [2023-04-01 00:23:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:23:42,698 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:42,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:23:42,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:23:42,699 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:42,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash 38816374, now seen corresponding path program 1 times [2023-04-01 00:23:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436439052] [2023-04-01 00:23:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:42,812 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 00:23:42,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:42,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436439052] [2023-04-01 00:23:42,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436439052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:42,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:42,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:23:42,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084415195] [2023-04-01 00:23:42,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:42,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:23:42,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:23:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:23:42,815 INFO L87 Difference]: Start difference. First operand 1168 states and 1584 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 00:23:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:43,116 INFO L93 Difference]: Finished difference Result 2161 states and 2936 transitions. [2023-04-01 00:23:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:23:43,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 126 [2023-04-01 00:23:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:43,123 INFO L225 Difference]: With dead ends: 2161 [2023-04-01 00:23:43,123 INFO L226 Difference]: Without dead ends: 1666 [2023-04-01 00:23:43,124 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 00:23:43,125 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 280 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:43,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 767 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-04-01 00:23:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1540. [2023-04-01 00:23:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1532 states have (on average 1.3387728459530026) internal successors, (2051), 1536 states have internal predecessors, (2051), 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 00:23:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2054 transitions. [2023-04-01 00:23:43,312 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2054 transitions. Word has length 126 [2023-04-01 00:23:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:43,313 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2054 transitions. [2023-04-01 00:23:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 00:23:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2054 transitions. [2023-04-01 00:23:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:23:43,315 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:43,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:43,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:23:43,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:43,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash -133130325, now seen corresponding path program 1 times [2023-04-01 00:23:43,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:43,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363083856] [2023-04-01 00:23:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:43,479 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 00:23:43,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:43,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363083856] [2023-04-01 00:23:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363083856] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:43,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:43,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:43,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111946112] [2023-04-01 00:23:43,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:43,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:43,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:43,482 INFO L87 Difference]: Start difference. First operand 1540 states and 2054 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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 00:23:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:43,852 INFO L93 Difference]: Finished difference Result 3039 states and 4061 transitions. [2023-04-01 00:23:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:43,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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 126 [2023-04-01 00:23:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:43,858 INFO L225 Difference]: With dead ends: 3039 [2023-04-01 00:23:43,858 INFO L226 Difference]: Without dead ends: 1540 [2023-04-01 00:23:43,860 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 00:23:43,861 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1016 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:43,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 280 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2023-04-01 00:23:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1540. [2023-04-01 00:23:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1532 states have (on average 1.316579634464752) internal successors, (2017), 1536 states have internal predecessors, (2017), 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 00:23:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2020 transitions. [2023-04-01 00:23:44,048 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2020 transitions. Word has length 126 [2023-04-01 00:23:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2020 transitions. [2023-04-01 00:23:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 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 00:23:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2020 transitions. [2023-04-01 00:23:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:23:44,051 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:44,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:44,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:23:44,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:44,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 316326635, now seen corresponding path program 1 times [2023-04-01 00:23:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:44,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62108411] [2023-04-01 00:23:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:45,038 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 00:23:45,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62108411] [2023-04-01 00:23:45,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62108411] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 00:23:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326353086] [2023-04-01 00:23:45,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:45,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 00:23:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 00:23:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-01 00:23:45,041 INFO L87 Difference]: Start difference. First operand 1540 states and 2020 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 00:23:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:45,747 INFO L93 Difference]: Finished difference Result 4766 states and 6268 transitions. [2023-04-01 00:23:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 00:23:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 126 [2023-04-01 00:23:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:45,760 INFO L225 Difference]: With dead ends: 4766 [2023-04-01 00:23:45,760 INFO L226 Difference]: Without dead ends: 3436 [2023-04-01 00:23:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-04-01 00:23:45,766 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 1410 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:45,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1204 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:23:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2023-04-01 00:23:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3392. [2023-04-01 00:23:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3392 states, 3384 states have (on average 1.3132387706855793) internal successors, (4444), 3388 states have internal predecessors, (4444), 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 00:23:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 4447 transitions. [2023-04-01 00:23:46,304 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 4447 transitions. Word has length 126 [2023-04-01 00:23:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:46,305 INFO L495 AbstractCegarLoop]: Abstraction has 3392 states and 4447 transitions. [2023-04-01 00:23:46,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 00:23:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 4447 transitions. [2023-04-01 00:23:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-04-01 00:23:46,308 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:46,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:46,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:23:46,309 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:46,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1492694613, now seen corresponding path program 1 times [2023-04-01 00:23:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297504450] [2023-04-01 00:23:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:47,041 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 00:23:47,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297504450] [2023-04-01 00:23:47,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297504450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:47,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:47,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748381984] [2023-04-01 00:23:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:47,044 INFO L87 Difference]: Start difference. First operand 3392 states and 4447 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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 00:23:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:47,663 INFO L93 Difference]: Finished difference Result 6315 states and 8323 transitions. [2023-04-01 00:23:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:47,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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 126 [2023-04-01 00:23:47,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:47,680 INFO L225 Difference]: With dead ends: 6315 [2023-04-01 00:23:47,681 INFO L226 Difference]: Without dead ends: 3776 [2023-04-01 00:23:47,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:47,688 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 901 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:47,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 685 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2023-04-01 00:23:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3754. [2023-04-01 00:23:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3746 states have (on average 1.293379604911906) internal successors, (4845), 3750 states have internal predecessors, (4845), 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 00:23:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 4848 transitions. [2023-04-01 00:23:48,287 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 4848 transitions. Word has length 126 [2023-04-01 00:23:48,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:48,288 INFO L495 AbstractCegarLoop]: Abstraction has 3754 states and 4848 transitions. [2023-04-01 00:23:48,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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 00:23:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 4848 transitions. [2023-04-01 00:23:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-01 00:23:48,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:48,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:48,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:23:48,293 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:48,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash 379596335, now seen corresponding path program 1 times [2023-04-01 00:23:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640520083] [2023-04-01 00:23:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:48,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:48,974 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 00:23:48,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640520083] [2023-04-01 00:23:48,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640520083] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:48,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:48,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:48,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286217053] [2023-04-01 00:23:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:48,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:48,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:48,982 INFO L87 Difference]: Start difference. First operand 3754 states and 4848 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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 00:23:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:49,703 INFO L93 Difference]: Finished difference Result 7767 states and 10191 transitions. [2023-04-01 00:23:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:49,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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 132 [2023-04-01 00:23:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:49,721 INFO L225 Difference]: With dead ends: 7767 [2023-04-01 00:23:49,721 INFO L226 Difference]: Without dead ends: 4694 [2023-04-01 00:23:49,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:49,729 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 876 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:49,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 657 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2023-04-01 00:23:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4672. [2023-04-01 00:23:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 4664 states have (on average 1.3083190394511148) internal successors, (6102), 4668 states have internal predecessors, (6102), 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 00:23:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 6105 transitions. [2023-04-01 00:23:50,396 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 6105 transitions. Word has length 132 [2023-04-01 00:23:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:50,397 INFO L495 AbstractCegarLoop]: Abstraction has 4672 states and 6105 transitions. [2023-04-01 00:23:50,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 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 00:23:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 6105 transitions. [2023-04-01 00:23:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 00:23:50,402 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:50,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:50,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:23:50,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:50,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 50169670, now seen corresponding path program 1 times [2023-04-01 00:23:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:50,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815518849] [2023-04-01 00:23:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:50,601 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 00:23:50,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:50,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815518849] [2023-04-01 00:23:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815518849] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:50,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474653795] [2023-04-01 00:23:50,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:50,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:50,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:50,604 INFO L87 Difference]: Start difference. First operand 4672 states and 6105 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 00:23:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:51,532 INFO L93 Difference]: Finished difference Result 8509 states and 11131 transitions. [2023-04-01 00:23:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 138 [2023-04-01 00:23:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:51,549 INFO L225 Difference]: With dead ends: 8509 [2023-04-01 00:23:51,549 INFO L226 Difference]: Without dead ends: 4672 [2023-04-01 00:23:51,558 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 00:23:51,559 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 975 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:51,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 286 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2023-04-01 00:23:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4672. [2023-04-01 00:23:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 4664 states have (on average 1.288164665523156) internal successors, (6008), 4668 states have internal predecessors, (6008), 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 00:23:52,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 6011 transitions. [2023-04-01 00:23:52,277 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 6011 transitions. Word has length 138 [2023-04-01 00:23:52,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:52,277 INFO L495 AbstractCegarLoop]: Abstraction has 4672 states and 6011 transitions. [2023-04-01 00:23:52,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 00:23:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 6011 transitions. [2023-04-01 00:23:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 00:23:52,283 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:52,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:52,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 00:23:52,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:52,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash 271370950, now seen corresponding path program 1 times [2023-04-01 00:23:52,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:52,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948633779] [2023-04-01 00:23:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:52,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:53,057 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 00:23:53,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948633779] [2023-04-01 00:23:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948633779] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:53,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:53,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:53,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631966432] [2023-04-01 00:23:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:53,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:53,060 INFO L87 Difference]: Start difference. First operand 4672 states and 6011 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 00:23:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:53,819 INFO L93 Difference]: Finished difference Result 6354 states and 8187 transitions. [2023-04-01 00:23:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:53,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 138 [2023-04-01 00:23:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:53,853 INFO L225 Difference]: With dead ends: 6354 [2023-04-01 00:23:53,853 INFO L226 Difference]: Without dead ends: 4567 [2023-04-01 00:23:53,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:53,860 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 914 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:53,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 865 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2023-04-01 00:23:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4534. [2023-04-01 00:23:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4526 states have (on average 1.2852408307556342) internal successors, (5817), 4530 states have internal predecessors, (5817), 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 00:23:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 5820 transitions. [2023-04-01 00:23:54,569 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 5820 transitions. Word has length 138 [2023-04-01 00:23:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:54,570 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 5820 transitions. [2023-04-01 00:23:54,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 00:23:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 5820 transitions. [2023-04-01 00:23:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 00:23:54,575 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:54,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:54,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 00:23:54,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:54,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1679950820, now seen corresponding path program 1 times [2023-04-01 00:23:54,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:54,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345373218] [2023-04-01 00:23:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:54,730 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 00:23:54,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:54,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345373218] [2023-04-01 00:23:54,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345373218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:54,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:54,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:54,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890395128] [2023-04-01 00:23:54,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:54,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:54,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:54,733 INFO L87 Difference]: Start difference. First operand 4534 states and 5820 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 00:23:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:55,780 INFO L93 Difference]: Finished difference Result 8991 states and 11543 transitions. [2023-04-01 00:23:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:55,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 138 [2023-04-01 00:23:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:55,792 INFO L225 Difference]: With dead ends: 8991 [2023-04-01 00:23:55,792 INFO L226 Difference]: Without dead ends: 4534 [2023-04-01 00:23:55,805 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 00:23:55,805 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 966 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:55,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 280 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:55,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2023-04-01 00:23:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 4534. [2023-04-01 00:23:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4526 states have (on average 1.2622624834290765) internal successors, (5713), 4530 states have internal predecessors, (5713), 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 00:23:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 5716 transitions. [2023-04-01 00:23:56,560 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 5716 transitions. Word has length 138 [2023-04-01 00:23:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:56,561 INFO L495 AbstractCegarLoop]: Abstraction has 4534 states and 5716 transitions. [2023-04-01 00:23:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 00:23:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 5716 transitions. [2023-04-01 00:23:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 00:23:56,566 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:56,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 00:23:56,566 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:56,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash -660843420, now seen corresponding path program 1 times [2023-04-01 00:23:56,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:56,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348654893] [2023-04-01 00:23:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:23:57,219 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 00:23:57,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:23:57,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348654893] [2023-04-01 00:23:57,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348654893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:23:57,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:23:57,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:23:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115718462] [2023-04-01 00:23:57,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:23:57,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:23:57,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:23:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:23:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:57,222 INFO L87 Difference]: Start difference. First operand 4534 states and 5716 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 00:23:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:23:57,916 INFO L93 Difference]: Finished difference Result 6379 states and 8085 transitions. [2023-04-01 00:23:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:23:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 138 [2023-04-01 00:23:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:23:57,926 INFO L225 Difference]: With dead ends: 6379 [2023-04-01 00:23:57,926 INFO L226 Difference]: Without dead ends: 3890 [2023-04-01 00:23:57,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:23:57,932 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 814 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:23:57,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 856 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:23:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2023-04-01 00:23:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3868. [2023-04-01 00:23:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3860 states have (on average 1.2624352331606217) internal successors, (4873), 3864 states have internal predecessors, (4873), 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 00:23:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 4876 transitions. [2023-04-01 00:23:58,488 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 4876 transitions. Word has length 138 [2023-04-01 00:23:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:23:58,488 INFO L495 AbstractCegarLoop]: Abstraction has 3868 states and 4876 transitions. [2023-04-01 00:23:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 00:23:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 4876 transitions. [2023-04-01 00:23:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 00:23:58,492 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:23:58,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:23:58,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 00:23:58,494 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:23:58,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:23:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1964355816, now seen corresponding path program 1 times [2023-04-01 00:23:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:23:58,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824978793] [2023-04-01 00:23:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:23:58,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:23:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:24:05,440 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 00:24:05,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:24:05,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824978793] [2023-04-01 00:24:05,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824978793] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:24:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:24:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2023-04-01 00:24:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951512722] [2023-04-01 00:24:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:24:05,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-04-01 00:24:05,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:24:05,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-04-01 00:24:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-04-01 00:24:05,443 INFO L87 Difference]: Start difference. First operand 3868 states and 4876 transitions. Second operand has 29 states, 29 states have (on average 4.655172413793103) internal successors, (135), 29 states have internal predecessors, (135), 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 00:24:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:24:12,048 INFO L93 Difference]: Finished difference Result 7467 states and 9730 transitions. [2023-04-01 00:24:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-04-01 00:24:12,049 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.655172413793103) internal successors, (135), 29 states have internal predecessors, (135), 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 138 [2023-04-01 00:24:12,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:24:12,068 INFO L225 Difference]: With dead ends: 7467 [2023-04-01 00:24:12,068 INFO L226 Difference]: Without dead ends: 6733 [2023-04-01 00:24:12,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=542, Invalid=2650, Unknown=0, NotChecked=0, Total=3192 [2023-04-01 00:24:12,074 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1662 mSDsluCounter, 6457 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1662 SdHoareTripleChecker+Valid, 6900 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:24:12,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1662 Valid, 6900 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 00:24:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2023-04-01 00:24:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 3995. [2023-04-01 00:24:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3987 states have (on average 1.2575871582643592) internal successors, (5014), 3991 states have internal predecessors, (5014), 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 00:24:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5017 transitions. [2023-04-01 00:24:12,874 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5017 transitions. Word has length 138 [2023-04-01 00:24:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:24:12,875 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 5017 transitions. [2023-04-01 00:24:12,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.655172413793103) internal successors, (135), 29 states have internal predecessors, (135), 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 00:24:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5017 transitions. [2023-04-01 00:24:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-01 00:24:12,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:24:12,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:24:12,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 00:24:12,882 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-01 00:24:12,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:24:12,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1895144307, now seen corresponding path program 1 times [2023-04-01 00:24:12,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:24:12,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12531779] [2023-04-01 00:24:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:24:12,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:24:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:24:20,056 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 00:24:20,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:24:20,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12531779] [2023-04-01 00:24:20,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12531779] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:24:20,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:24:20,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2023-04-01 00:24:20,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699429764] [2023-04-01 00:24:20,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:24:20,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-04-01 00:24:20,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:24:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-04-01 00:24:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2023-04-01 00:24:20,059 INFO L87 Difference]: Start difference. First operand 3995 states and 5017 transitions. Second operand has 30 states, 30 states have (on average 4.5) internal successors, (135), 30 states have internal predecessors, (135), 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)