/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:32:09,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:32:09,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:32:09,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:32:09,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:32:09,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:32:09,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:32:09,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:32:09,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:32:09,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:32:09,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:32:09,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:32:09,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:32:09,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:32:09,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:32:09,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:32:09,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:32:09,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:32:09,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:32:09,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:32:09,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:32:09,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:32:09,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:32:09,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:32:09,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:32:09,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:32:09,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:32:09,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:32:09,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:32:09,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:32:09,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:32:09,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:32:09,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:32:09,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:32:09,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:32:09,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:32:09,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:32:09,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:32:09,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:32:09,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:32:09,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:32:09,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 02:32:09,861 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:32:09,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:32:09,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:32:09,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:32:09,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:32:09,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:32:09,863 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:32:09,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:32:09,863 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:32:09,863 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:32:09,864 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:32:09,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:32:09,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:32:09,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:32:09,864 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:32:09,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:32:09,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:32:09,865 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:32:09,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:32:09,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:32:09,867 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:32:09,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:32:09,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:32:09,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:32:09,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:32:09,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:32:09,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:32:10,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:32:10,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:32:10,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:32:10,097 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:32:10,097 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:32:10,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:32:11,314 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:32:11,693 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:32:11,694 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:32:11,722 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475a2c7be/b8b163b3b1e54e21869a62152cffdcc6/FLAG8da447462 [2023-04-03 02:32:11,741 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475a2c7be/b8b163b3b1e54e21869a62152cffdcc6 [2023-04-03 02:32:11,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:32:11,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:32:11,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:32:11,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:32:11,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:32:11,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:32:11" (1/1) ... [2023-04-03 02:32:11,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3839425d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:11, skipping insertion in model container [2023-04-03 02:32:11,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:32:11" (1/1) ... [2023-04-03 02:32:11,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:32:11,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:32:12,152 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7186,7199] [2023-04-03 02:32:12,175 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11327,11340] [2023-04-03 02:32:12,217 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18377,18390] [2023-04-03 02:32:12,259 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24849,24862] [2023-04-03 02:32:12,317 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43924,43937] [2023-04-03 02:32:12,375 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71846,71859] [2023-04-03 02:32:12,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:32:12,589 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:32:12,636 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7186,7199] [2023-04-03 02:32:12,661 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11327,11340] [2023-04-03 02:32:12,682 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18377,18390] [2023-04-03 02:32:12,702 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24849,24862] [2023-04-03 02:32:12,761 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43924,43937] [2023-04-03 02:32:12,819 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71846,71859] [2023-04-03 02:32:12,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:32:12,919 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:32:12,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12 WrapperNode [2023-04-03 02:32:12,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:32:12,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:32:12,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:32:12,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:32:12,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:12,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:12,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:12,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:13,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:13,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:13,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:13,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:13,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:32:13,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:32:13,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:32:13,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:32:13,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (1/1) ... [2023-04-03 02:32:13,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:32:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:32:13,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 02:32:13,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 02:32:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:32:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:32:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:32:13,196 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:32:13,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:32:13,478 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:32:13,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:32:15,721 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:32:16,047 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:32:16,048 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:32:16,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:32:16 BoogieIcfgContainer [2023-04-03 02:32:16,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:32:16,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:32:16,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:32:16,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:32:16,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:32:11" (1/3) ... [2023-04-03 02:32:16,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73420361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:32:16, skipping insertion in model container [2023-04-03 02:32:16,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:32:12" (2/3) ... [2023-04-03 02:32:16,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73420361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:32:16, skipping insertion in model container [2023-04-03 02:32:16,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:32:16" (3/3) ... [2023-04-03 02:32:16,061 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2023-04-03 02:32:16,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:32:16,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-03 02:32:16,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:32:16,143 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;@5b9be888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:32:16,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-03 02:32:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 1182 states, 1171 states have (on average 1.8078565328778822) internal successors, (2117), 1177 states have internal predecessors, (2117), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:32:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-03 02:32:16,174 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:16,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:16,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:16,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:16,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1761931692, now seen corresponding path program 1 times [2023-04-03 02:32:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:16,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99420588] [2023-04-03 02:32:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:16,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:16,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99420588] [2023-04-03 02:32:16,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99420588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:16,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:32:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137230479] [2023-04-03 02:32:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:16,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:32:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:32:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:32:16,845 INFO L87 Difference]: Start difference. First operand has 1182 states, 1171 states have (on average 1.8078565328778822) internal successors, (2117), 1177 states have internal predecessors, (2117), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:18,314 INFO L93 Difference]: Finished difference Result 2278 states and 3982 transitions. [2023-04-03 02:32:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:32:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-04-03 02:32:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:18,332 INFO L225 Difference]: With dead ends: 2278 [2023-04-03 02:32:18,332 INFO L226 Difference]: Without dead ends: 1426 [2023-04-03 02:32:18,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:32:18,340 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 6478 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6478 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:18,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6478 Valid, 1349 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 02:32:18,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2023-04-03 02:32:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1420. [2023-04-03 02:32:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1411 states have (on average 1.3175053153791638) internal successors, (1859), 1416 states have internal predecessors, (1859), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1862 transitions. [2023-04-03 02:32:18,455 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1862 transitions. Word has length 54 [2023-04-03 02:32:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:18,455 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1862 transitions. [2023-04-03 02:32:18,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1862 transitions. [2023-04-03 02:32:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-03 02:32:18,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:18,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:18,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:32:18,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:18,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash 94503601, now seen corresponding path program 1 times [2023-04-03 02:32:18,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:18,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274493181] [2023-04-03 02:32:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:18,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:18,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:18,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274493181] [2023-04-03 02:32:18,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274493181] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:18,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:18,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:32:18,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939556641] [2023-04-03 02:32:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:18,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:32:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:32:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:32:18,670 INFO L87 Difference]: Start difference. First operand 1420 states and 1862 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:19,710 INFO L93 Difference]: Finished difference Result 2838 states and 3751 transitions. [2023-04-03 02:32:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:32:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-04-03 02:32:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:19,718 INFO L225 Difference]: With dead ends: 2838 [2023-04-03 02:32:19,718 INFO L226 Difference]: Without dead ends: 1958 [2023-04-03 02:32:19,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:32:19,721 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 4436 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:19,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 846 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 02:32:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2023-04-03 02:32:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1946. [2023-04-03 02:32:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1937 states have (on average 1.3278265358802273) internal successors, (2572), 1942 states have internal predecessors, (2572), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2575 transitions. [2023-04-03 02:32:19,819 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2575 transitions. Word has length 55 [2023-04-03 02:32:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:19,820 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2575 transitions. [2023-04-03 02:32:19,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2575 transitions. [2023-04-03 02:32:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-03 02:32:19,823 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:19,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:32:19,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:19,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:19,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1203569634, now seen corresponding path program 1 times [2023-04-03 02:32:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:19,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443320750] [2023-04-03 02:32:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:20,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443320750] [2023-04-03 02:32:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443320750] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:32:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492291969] [2023-04-03 02:32:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:32:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:32:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:32:20,003 INFO L87 Difference]: Start difference. First operand 1946 states and 2575 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:20,839 INFO L93 Difference]: Finished difference Result 3921 states and 5231 transitions. [2023-04-03 02:32:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:32:20,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-04-03 02:32:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:20,850 INFO L225 Difference]: With dead ends: 3921 [2023-04-03 02:32:20,850 INFO L226 Difference]: Without dead ends: 2630 [2023-04-03 02:32:20,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:32:20,855 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 3827 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:20,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 738 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:32:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2023-04-03 02:32:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2620. [2023-04-03 02:32:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2611 states have (on average 1.3190348525469169) internal successors, (3444), 2616 states have internal predecessors, (3444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3447 transitions. [2023-04-03 02:32:21,010 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3447 transitions. Word has length 55 [2023-04-03 02:32:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:21,011 INFO L495 AbstractCegarLoop]: Abstraction has 2620 states and 3447 transitions. [2023-04-03 02:32:21,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3447 transitions. [2023-04-03 02:32:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-03 02:32:21,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:21,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:21,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:32:21,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:21,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1700731340, now seen corresponding path program 1 times [2023-04-03 02:32:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:21,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145634343] [2023-04-03 02:32:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:21,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:21,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145634343] [2023-04-03 02:32:21,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145634343] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:21,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:21,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:32:21,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15273666] [2023-04-03 02:32:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:32:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:32:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:32:21,600 INFO L87 Difference]: Start difference. First operand 2620 states and 3447 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:24,139 INFO L93 Difference]: Finished difference Result 4836 states and 6461 transitions. [2023-04-03 02:32:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:32:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-03 02:32:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:24,155 INFO L225 Difference]: With dead ends: 4836 [2023-04-03 02:32:24,155 INFO L226 Difference]: Without dead ends: 4463 [2023-04-03 02:32:24,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:32:24,159 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 5244 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 3773 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5244 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:24,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5244 Valid, 3047 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 3773 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 02:32:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2023-04-03 02:32:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 2620. [2023-04-03 02:32:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2611 states have (on average 1.3186518575258521) internal successors, (3443), 2616 states have internal predecessors, (3443), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3446 transitions. [2023-04-03 02:32:24,392 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3446 transitions. Word has length 56 [2023-04-03 02:32:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:24,392 INFO L495 AbstractCegarLoop]: Abstraction has 2620 states and 3446 transitions. [2023-04-03 02:32:24,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3446 transitions. [2023-04-03 02:32:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-03 02:32:24,396 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:24,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:24,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:32:24,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:24,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash 767132385, now seen corresponding path program 1 times [2023-04-03 02:32:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:24,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218600052] [2023-04-03 02:32:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:24,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:24,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218600052] [2023-04-03 02:32:24,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218600052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:24,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:24,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:32:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702220126] [2023-04-03 02:32:24,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:24,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:32:24,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:32:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:32:24,798 INFO L87 Difference]: Start difference. First operand 2620 states and 3446 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:26,803 INFO L93 Difference]: Finished difference Result 3580 states and 4711 transitions. [2023-04-03 02:32:26,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:32:26,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-03 02:32:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:26,817 INFO L225 Difference]: With dead ends: 3580 [2023-04-03 02:32:26,818 INFO L226 Difference]: Without dead ends: 3575 [2023-04-03 02:32:26,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:32:26,822 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 5446 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5446 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:26,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5446 Valid, 2382 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:32:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2023-04-03 02:32:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2620. [2023-04-03 02:32:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2611 states have (on average 1.3182688625047874) internal successors, (3442), 2616 states have internal predecessors, (3442), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3445 transitions. [2023-04-03 02:32:27,068 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3445 transitions. Word has length 56 [2023-04-03 02:32:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:27,069 INFO L495 AbstractCegarLoop]: Abstraction has 2620 states and 3445 transitions. [2023-04-03 02:32:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3445 transitions. [2023-04-03 02:32:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-03 02:32:27,072 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:27,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:27,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:32:27,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:27,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 309495063, now seen corresponding path program 1 times [2023-04-03 02:32:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:27,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567703125] [2023-04-03 02:32:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:27,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:27,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:27,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567703125] [2023-04-03 02:32:27,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567703125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:27,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:32:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193566667] [2023-04-03 02:32:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:32:27,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:32:27,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:32:27,402 INFO L87 Difference]: Start difference. First operand 2620 states and 3445 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:28,784 INFO L93 Difference]: Finished difference Result 4102 states and 5500 transitions. [2023-04-03 02:32:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-03 02:32:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-04-03 02:32:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:28,798 INFO L225 Difference]: With dead ends: 4102 [2023-04-03 02:32:28,798 INFO L226 Difference]: Without dead ends: 3631 [2023-04-03 02:32:28,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:32:28,803 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 5827 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5827 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5827 Valid, 1791 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 02:32:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2023-04-03 02:32:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 2620. [2023-04-03 02:32:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2620 states, 2611 states have (on average 1.3178858674837226) internal successors, (3441), 2616 states have internal predecessors, (3441), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3444 transitions. [2023-04-03 02:32:29,095 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3444 transitions. Word has length 56 [2023-04-03 02:32:29,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:29,095 INFO L495 AbstractCegarLoop]: Abstraction has 2620 states and 3444 transitions. [2023-04-03 02:32:29,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:29,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3444 transitions. [2023-04-03 02:32:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-03 02:32:29,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:29,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:29,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:32:29,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:29,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1089640708, now seen corresponding path program 1 times [2023-04-03 02:32:29,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:29,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095605007] [2023-04-03 02:32:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:29,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:29,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:29,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095605007] [2023-04-03 02:32:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095605007] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:29,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:29,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057283013] [2023-04-03 02:32:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:29,188 INFO L87 Difference]: Start difference. First operand 2620 states and 3444 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:29,611 INFO L93 Difference]: Finished difference Result 3213 states and 4306 transitions. [2023-04-03 02:32:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:29,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-04-03 02:32:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:29,622 INFO L225 Difference]: With dead ends: 3213 [2023-04-03 02:32:29,622 INFO L226 Difference]: Without dead ends: 2558 [2023-04-03 02:32:29,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:29,626 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 496 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:29,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1554 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2023-04-03 02:32:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2556. [2023-04-03 02:32:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2547 states have (on average 1.3278366705928544) internal successors, (3382), 2552 states have internal predecessors, (3382), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3385 transitions. [2023-04-03 02:32:29,999 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3385 transitions. Word has length 57 [2023-04-03 02:32:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:30,001 INFO L495 AbstractCegarLoop]: Abstraction has 2556 states and 3385 transitions. [2023-04-03 02:32:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3385 transitions. [2023-04-03 02:32:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-03 02:32:30,004 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:30,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:30,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:32:30,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:30,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1888815628, now seen corresponding path program 1 times [2023-04-03 02:32:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798148249] [2023-04-03 02:32:30,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:30,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:30,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798148249] [2023-04-03 02:32:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798148249] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:30,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424952289] [2023-04-03 02:32:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:30,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:30,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:30,091 INFO L87 Difference]: Start difference. First operand 2556 states and 3385 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:30,584 INFO L93 Difference]: Finished difference Result 3612 states and 4902 transitions. [2023-04-03 02:32:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-04-03 02:32:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:30,594 INFO L225 Difference]: With dead ends: 3612 [2023-04-03 02:32:30,594 INFO L226 Difference]: Without dead ends: 2723 [2023-04-03 02:32:30,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:30,597 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 469 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:30,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1538 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2023-04-03 02:32:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2721. [2023-04-03 02:32:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2712 states have (on average 1.3325958702064897) internal successors, (3614), 2717 states have internal predecessors, (3614), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3617 transitions. [2023-04-03 02:32:31,046 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3617 transitions. Word has length 57 [2023-04-03 02:32:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:31,046 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3617 transitions. [2023-04-03 02:32:31,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3617 transitions. [2023-04-03 02:32:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-03 02:32:31,052 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:31,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:32:31,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:31,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash 978401362, now seen corresponding path program 1 times [2023-04-03 02:32:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267233487] [2023-04-03 02:32:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:31,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267233487] [2023-04-03 02:32:31,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267233487] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:31,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:31,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530416861] [2023-04-03 02:32:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:31,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:31,130 INFO L87 Difference]: Start difference. First operand 2721 states and 3617 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:31,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:31,872 INFO L93 Difference]: Finished difference Result 5673 states and 7692 transitions. [2023-04-03 02:32:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-04-03 02:32:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:31,902 INFO L225 Difference]: With dead ends: 5673 [2023-04-03 02:32:31,903 INFO L226 Difference]: Without dead ends: 3936 [2023-04-03 02:32:31,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:31,910 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 542 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:31,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1702 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2023-04-03 02:32:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3930. [2023-04-03 02:32:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3921 states have (on average 1.3226217801581228) internal successors, (5186), 3926 states have internal predecessors, (5186), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5189 transitions. [2023-04-03 02:32:32,653 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5189 transitions. Word has length 57 [2023-04-03 02:32:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:32,653 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5189 transitions. [2023-04-03 02:32:32,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5189 transitions. [2023-04-03 02:32:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-03 02:32:32,658 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:32,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:32,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:32:32,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:32,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1360688730, now seen corresponding path program 1 times [2023-04-03 02:32:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619165051] [2023-04-03 02:32:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:32,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619165051] [2023-04-03 02:32:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619165051] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:32,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081364062] [2023-04-03 02:32:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:32,725 INFO L87 Difference]: Start difference. First operand 3930 states and 5189 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:33,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:33,549 INFO L93 Difference]: Finished difference Result 7208 states and 9606 transitions. [2023-04-03 02:32:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:33,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-03 02:32:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:33,558 INFO L225 Difference]: With dead ends: 7208 [2023-04-03 02:32:33,558 INFO L226 Difference]: Without dead ends: 3771 [2023-04-03 02:32:33,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:33,564 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 683 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:33,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1259 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2023-04-03 02:32:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3107. [2023-04-03 02:32:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3098 states have (on average 1.3227888960619754) internal successors, (4098), 3103 states have internal predecessors, (4098), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:34,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4101 transitions. [2023-04-03 02:32:34,122 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4101 transitions. Word has length 58 [2023-04-03 02:32:34,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:34,122 INFO L495 AbstractCegarLoop]: Abstraction has 3107 states and 4101 transitions. [2023-04-03 02:32:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4101 transitions. [2023-04-03 02:32:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-03 02:32:34,125 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:34,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:34,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:32:34,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:34,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash -414637218, now seen corresponding path program 1 times [2023-04-03 02:32:34,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:34,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168685570] [2023-04-03 02:32:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:34,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:34,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:34,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168685570] [2023-04-03 02:32:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168685570] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:34,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948930926] [2023-04-03 02:32:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:34,193 INFO L87 Difference]: Start difference. First operand 3107 states and 4101 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:34,993 INFO L93 Difference]: Finished difference Result 5613 states and 7512 transitions. [2023-04-03 02:32:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:34,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-03 02:32:34,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:34,999 INFO L225 Difference]: With dead ends: 5613 [2023-04-03 02:32:34,999 INFO L226 Difference]: Without dead ends: 3163 [2023-04-03 02:32:35,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:35,005 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 648 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:35,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 931 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:35,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2023-04-03 02:32:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 2534. [2023-04-03 02:32:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2526 states have (on average 1.3341250989707047) internal successors, (3370), 2530 states have internal predecessors, (3370), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3373 transitions. [2023-04-03 02:32:35,393 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3373 transitions. Word has length 58 [2023-04-03 02:32:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:35,393 INFO L495 AbstractCegarLoop]: Abstraction has 2534 states and 3373 transitions. [2023-04-03 02:32:35,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3373 transitions. [2023-04-03 02:32:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-03 02:32:35,395 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:35,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:35,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:32:35,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:35,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -221824163, now seen corresponding path program 1 times [2023-04-03 02:32:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:35,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548472422] [2023-04-03 02:32:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:35,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548472422] [2023-04-03 02:32:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548472422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:35,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871179578] [2023-04-03 02:32:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:35,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:35,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:35,460 INFO L87 Difference]: Start difference. First operand 2534 states and 3373 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:35,973 INFO L93 Difference]: Finished difference Result 4557 states and 6159 transitions. [2023-04-03 02:32:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:35,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-03 02:32:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:35,979 INFO L225 Difference]: With dead ends: 4557 [2023-04-03 02:32:35,979 INFO L226 Difference]: Without dead ends: 2501 [2023-04-03 02:32:35,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:35,985 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 492 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:35,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 728 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2023-04-03 02:32:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 2195. [2023-04-03 02:32:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 2188 states have (on average 1.3372943327239488) internal successors, (2926), 2191 states have internal predecessors, (2926), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2929 transitions. [2023-04-03 02:32:36,466 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2929 transitions. Word has length 58 [2023-04-03 02:32:36,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:36,466 INFO L495 AbstractCegarLoop]: Abstraction has 2195 states and 2929 transitions. [2023-04-03 02:32:36,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2929 transitions. [2023-04-03 02:32:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 02:32:36,468 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:36,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:36,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:32:36,468 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:36,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1519309459, now seen corresponding path program 1 times [2023-04-03 02:32:36,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:36,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453775798] [2023-04-03 02:32:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:36,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:37,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453775798] [2023-04-03 02:32:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453775798] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:37,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:37,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:32:37,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675106994] [2023-04-03 02:32:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:32:37,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:32:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:32:37,165 INFO L87 Difference]: Start difference. First operand 2195 states and 2929 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:39,013 INFO L93 Difference]: Finished difference Result 4676 states and 6262 transitions. [2023-04-03 02:32:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 02:32:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-03 02:32:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:39,023 INFO L225 Difference]: With dead ends: 4676 [2023-04-03 02:32:39,023 INFO L226 Difference]: Without dead ends: 4428 [2023-04-03 02:32:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-04-03 02:32:39,026 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 3047 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:39,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 2864 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:32:39,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2023-04-03 02:32:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 2157. [2023-04-03 02:32:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 2151 states have (on average 1.3370525337052535) internal successors, (2876), 2153 states have internal predecessors, (2876), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2879 transitions. [2023-04-03 02:32:39,545 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2879 transitions. Word has length 59 [2023-04-03 02:32:39,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:39,545 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 2879 transitions. [2023-04-03 02:32:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2879 transitions. [2023-04-03 02:32:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 02:32:39,547 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:39,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:39,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:32:39,547 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:39,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash -962400079, now seen corresponding path program 1 times [2023-04-03 02:32:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:39,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977276206] [2023-04-03 02:32:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:39,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:40,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:40,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977276206] [2023-04-03 02:32:40,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977276206] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:40,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:40,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-03 02:32:40,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102600170] [2023-04-03 02:32:40,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:40,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-03 02:32:40,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:40,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-03 02:32:40,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:32:40,589 INFO L87 Difference]: Start difference. First operand 2157 states and 2879 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:43,859 INFO L93 Difference]: Finished difference Result 4036 states and 5372 transitions. [2023-04-03 02:32:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-03 02:32:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-03 02:32:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:43,867 INFO L225 Difference]: With dead ends: 4036 [2023-04-03 02:32:43,867 INFO L226 Difference]: Without dead ends: 4032 [2023-04-03 02:32:43,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2023-04-03 02:32:43,870 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 3456 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3456 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:43,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3456 Valid, 6210 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:32:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2023-04-03 02:32:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 2164. [2023-04-03 02:32:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2158 states have (on average 1.3368860055607044) internal successors, (2885), 2160 states have internal predecessors, (2885), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2888 transitions. [2023-04-03 02:32:44,470 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2888 transitions. Word has length 59 [2023-04-03 02:32:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:44,470 INFO L495 AbstractCegarLoop]: Abstraction has 2164 states and 2888 transitions. [2023-04-03 02:32:44,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2888 transitions. [2023-04-03 02:32:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 02:32:44,472 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:44,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:44,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 02:32:44,473 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:44,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash -97841705, now seen corresponding path program 1 times [2023-04-03 02:32:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:44,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969162056] [2023-04-03 02:32:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:44,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:45,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:45,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969162056] [2023-04-03 02:32:45,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969162056] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:45,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:45,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 02:32:45,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559332124] [2023-04-03 02:32:45,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:45,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 02:32:45,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:45,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 02:32:45,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-04-03 02:32:45,015 INFO L87 Difference]: Start difference. First operand 2164 states and 2888 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:47,460 INFO L93 Difference]: Finished difference Result 4607 states and 6171 transitions. [2023-04-03 02:32:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-03 02:32:47,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-04-03 02:32:47,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:47,469 INFO L225 Difference]: With dead ends: 4607 [2023-04-03 02:32:47,469 INFO L226 Difference]: Without dead ends: 4385 [2023-04-03 02:32:47,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-04-03 02:32:47,471 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 2465 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:47,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 3782 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:32:47,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2023-04-03 02:32:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 2152. [2023-04-03 02:32:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2147 states have (on average 1.3372147182114578) internal successors, (2871), 2148 states have internal predecessors, (2871), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2874 transitions. [2023-04-03 02:32:48,117 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2874 transitions. Word has length 59 [2023-04-03 02:32:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:48,117 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 2874 transitions. [2023-04-03 02:32:48,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2874 transitions. [2023-04-03 02:32:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-03 02:32:48,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:48,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:48,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 02:32:48,119 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:48,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:48,120 INFO L85 PathProgramCache]: Analyzing trace with hash 612934603, now seen corresponding path program 1 times [2023-04-03 02:32:48,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:48,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801334792] [2023-04-03 02:32:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:48,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:48,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801334792] [2023-04-03 02:32:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801334792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:48,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-03 02:32:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656654732] [2023-04-03 02:32:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-03 02:32:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-03 02:32:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:32:48,811 INFO L87 Difference]: Start difference. First operand 2152 states and 2874 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:52,126 INFO L93 Difference]: Finished difference Result 4923 states and 6590 transitions. [2023-04-03 02:32:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-03 02:32:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-04-03 02:32:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:52,132 INFO L225 Difference]: With dead ends: 4923 [2023-04-03 02:32:52,132 INFO L226 Difference]: Without dead ends: 4919 [2023-04-03 02:32:52,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2023-04-03 02:32:52,133 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 2675 mSDsluCounter, 5001 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 5694 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:52,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2675 Valid, 5694 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-03 02:32:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2023-04-03 02:32:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 2141. [2023-04-03 02:32:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2137 states have (on average 1.3373888628919046) internal successors, (2858), 2137 states have internal predecessors, (2858), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 2861 transitions. [2023-04-03 02:32:52,834 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 2861 transitions. Word has length 60 [2023-04-03 02:32:52,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:52,834 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 2861 transitions. [2023-04-03 02:32:52,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 2861 transitions. [2023-04-03 02:32:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 02:32:52,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:52,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:52,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 02:32:52,836 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:52,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1959666218, now seen corresponding path program 1 times [2023-04-03 02:32:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:52,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106698011] [2023-04-03 02:32:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:52,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:52,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:52,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106698011] [2023-04-03 02:32:52,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106698011] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:52,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:52,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:32:52,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698695128] [2023-04-03 02:32:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:52,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:32:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:32:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:32:52,952 INFO L87 Difference]: Start difference. First operand 2141 states and 2861 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:53,620 INFO L93 Difference]: Finished difference Result 3531 states and 4796 transitions. [2023-04-03 02:32:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:32:53,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-04-03 02:32:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:53,623 INFO L225 Difference]: With dead ends: 3531 [2023-04-03 02:32:53,623 INFO L226 Difference]: Without dead ends: 1937 [2023-04-03 02:32:53,625 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 [2023-04-03 02:32:53,628 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 814 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:53,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 670 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2023-04-03 02:32:54,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1933. [2023-04-03 02:32:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1929 states have (on average 1.3255572835666147) internal successors, (2557), 1929 states have internal predecessors, (2557), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2560 transitions. [2023-04-03 02:32:54,218 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2560 transitions. Word has length 62 [2023-04-03 02:32:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:54,218 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 2560 transitions. [2023-04-03 02:32:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2560 transitions. [2023-04-03 02:32:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 02:32:54,220 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:54,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:54,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 02:32:54,221 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:54,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 215916890, now seen corresponding path program 1 times [2023-04-03 02:32:54,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:54,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323159997] [2023-04-03 02:32:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:54,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:54,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323159997] [2023-04-03 02:32:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323159997] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:54,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361657906] [2023-04-03 02:32:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:54,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:54,348 INFO L87 Difference]: Start difference. First operand 1933 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:55,357 INFO L93 Difference]: Finished difference Result 4009 states and 5458 transitions. [2023-04-03 02:32:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-04-03 02:32:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:55,361 INFO L225 Difference]: With dead ends: 4009 [2023-04-03 02:32:55,361 INFO L226 Difference]: Without dead ends: 2719 [2023-04-03 02:32:55,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:55,364 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 284 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:55,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 697 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:32:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2023-04-03 02:32:56,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2485. [2023-04-03 02:32:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2481 states have (on average 1.3293027005239824) internal successors, (3298), 2481 states have internal predecessors, (3298), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3301 transitions. [2023-04-03 02:32:56,156 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3301 transitions. Word has length 62 [2023-04-03 02:32:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:56,157 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 3301 transitions. [2023-04-03 02:32:56,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:56,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3301 transitions. [2023-04-03 02:32:56,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-04-03 02:32:56,158 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:56,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:56,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 02:32:56,159 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:56,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash 943093061, now seen corresponding path program 1 times [2023-04-03 02:32:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:56,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917270582] [2023-04-03 02:32:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:56,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:56,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917270582] [2023-04-03 02:32:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917270582] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:56,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:56,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:32:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580547305] [2023-04-03 02:32:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:56,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:32:56,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:32:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:56,276 INFO L87 Difference]: Start difference. First operand 2485 states and 3301 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:32:57,596 INFO L93 Difference]: Finished difference Result 5469 states and 7432 transitions. [2023-04-03 02:32:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:32:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-04-03 02:32:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:32:57,606 INFO L225 Difference]: With dead ends: 5469 [2023-04-03 02:32:57,606 INFO L226 Difference]: Without dead ends: 3681 [2023-04-03 02:32:57,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:32:57,610 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 234 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:32:57,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 726 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:32:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2023-04-03 02:32:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3309. [2023-04-03 02:32:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3305 states have (on average 1.3276853252647505) internal successors, (4388), 3305 states have internal predecessors, (4388), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4391 transitions. [2023-04-03 02:32:58,703 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4391 transitions. Word has length 64 [2023-04-03 02:32:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:32:58,704 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 4391 transitions. [2023-04-03 02:32:58,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:32:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4391 transitions. [2023-04-03 02:32:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:32:58,709 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:32:58,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:32:58,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 02:32:58,709 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:32:58,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:32:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1692239857, now seen corresponding path program 1 times [2023-04-03 02:32:58,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:32:58,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970383414] [2023-04-03 02:32:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:32:58,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:32:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:32:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:32:59,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:32:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970383414] [2023-04-03 02:32:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970383414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:32:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:32:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:32:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024352890] [2023-04-03 02:32:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:32:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:32:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:32:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:32:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:32:59,054 INFO L87 Difference]: Start difference. First operand 3309 states and 4391 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:33:02,338 INFO L93 Difference]: Finished difference Result 7615 states and 10103 transitions. [2023-04-03 02:33:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-03 02:33:02,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:33:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:33:02,347 INFO L225 Difference]: With dead ends: 7615 [2023-04-03 02:33:02,347 INFO L226 Difference]: Without dead ends: 7613 [2023-04-03 02:33:02,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2023-04-03 02:33:02,348 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1988 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:33:02,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 2307 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:33:02,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2023-04-03 02:33:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 3896. [2023-04-03 02:33:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3892 states have (on average 1.3214285714285714) internal successors, (5143), 3892 states have internal predecessors, (5143), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 5146 transitions. [2023-04-03 02:33:03,884 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 5146 transitions. Word has length 68 [2023-04-03 02:33:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:33:03,884 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 5146 transitions. [2023-04-03 02:33:03,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 5146 transitions. [2023-04-03 02:33:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:33:03,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:33:03,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:33:03,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 02:33:03,887 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:33:03,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:33:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2026695785, now seen corresponding path program 1 times [2023-04-03 02:33:03,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:33:03,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399491047] [2023-04-03 02:33:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:03,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:33:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:04,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:33:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399491047] [2023-04-03 02:33:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399491047] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:33:04,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:33:04,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:33:04,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857265667] [2023-04-03 02:33:04,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:33:04,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:33:04,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:33:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:33:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:33:04,252 INFO L87 Difference]: Start difference. First operand 3896 states and 5146 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:33:07,599 INFO L93 Difference]: Finished difference Result 7479 states and 9928 transitions. [2023-04-03 02:33:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:33:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-03 02:33:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:33:07,607 INFO L225 Difference]: With dead ends: 7479 [2023-04-03 02:33:07,607 INFO L226 Difference]: Without dead ends: 7477 [2023-04-03 02:33:07,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:33:07,608 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1432 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1432 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:33:07,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1432 Valid, 2474 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:33:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2023-04-03 02:33:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 4198. [2023-04-03 02:33:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4198 states, 4194 states have (on average 1.3178350023843586) internal successors, (5527), 4194 states have internal predecessors, (5527), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 5530 transitions. [2023-04-03 02:33:09,298 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 5530 transitions. Word has length 74 [2023-04-03 02:33:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:33:09,298 INFO L495 AbstractCegarLoop]: Abstraction has 4198 states and 5530 transitions. [2023-04-03 02:33:09,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 5530 transitions. [2023-04-03 02:33:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:33:09,301 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:33:09,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:33:09,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 02:33:09,301 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:33:09,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:33:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1758342263, now seen corresponding path program 1 times [2023-04-03 02:33:09,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:33:09,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441144364] [2023-04-03 02:33:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:09,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:33:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:09,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:33:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441144364] [2023-04-03 02:33:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441144364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:33:09,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:33:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:33:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563977947] [2023-04-03 02:33:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:33:09,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:33:09,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:33:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:33:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:33:09,686 INFO L87 Difference]: Start difference. First operand 4198 states and 5530 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:33:13,065 INFO L93 Difference]: Finished difference Result 7441 states and 9862 transitions. [2023-04-03 02:33:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 02:33:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-03 02:33:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:33:13,076 INFO L225 Difference]: With dead ends: 7441 [2023-04-03 02:33:13,076 INFO L226 Difference]: Without dead ends: 7439 [2023-04-03 02:33:13,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-04-03 02:33:13,078 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1394 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:33:13,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2728 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:33:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7439 states. [2023-04-03 02:33:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7439 to 4488. [2023-04-03 02:33:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4484 states have (on average 1.315343443354148) internal successors, (5898), 4484 states have internal predecessors, (5898), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 5901 transitions. [2023-04-03 02:33:15,070 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 5901 transitions. Word has length 75 [2023-04-03 02:33:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:33:15,071 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 5901 transitions. [2023-04-03 02:33:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 5901 transitions. [2023-04-03 02:33:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-03 02:33:15,073 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:33:15,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:33:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-03 02:33:15,073 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:33:15,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:33:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1369657647, now seen corresponding path program 1 times [2023-04-03 02:33:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:33:15,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843453465] [2023-04-03 02:33:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:33:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:15,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:33:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843453465] [2023-04-03 02:33:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843453465] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:33:15,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:33:15,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 02:33:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310931245] [2023-04-03 02:33:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:33:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:33:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:33:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:33:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-04-03 02:33:15,409 INFO L87 Difference]: Start difference. First operand 4488 states and 5901 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:33:18,766 INFO L93 Difference]: Finished difference Result 7010 states and 9276 transitions. [2023-04-03 02:33:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-03 02:33:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-04-03 02:33:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:33:18,774 INFO L225 Difference]: With dead ends: 7010 [2023-04-03 02:33:18,774 INFO L226 Difference]: Without dead ends: 7008 [2023-04-03 02:33:18,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2023-04-03 02:33:18,776 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1545 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:33:18,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 2515 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:33:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2023-04-03 02:33:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 4453. [2023-04-03 02:33:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 4449 states have (on average 1.3160260732748932) internal successors, (5855), 4449 states have internal predecessors, (5855), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5858 transitions. [2023-04-03 02:33:20,701 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5858 transitions. Word has length 75 [2023-04-03 02:33:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:33:20,702 INFO L495 AbstractCegarLoop]: Abstraction has 4453 states and 5858 transitions. [2023-04-03 02:33:20,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5858 transitions. [2023-04-03 02:33:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:33:20,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:33:20,704 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] [2023-04-03 02:33:20,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-03 02:33:20,704 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:33:20,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:33:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1393591391, now seen corresponding path program 1 times [2023-04-03 02:33:20,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:33:20,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469256204] [2023-04-03 02:33:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:20,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:33:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:20,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:33:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469256204] [2023-04-03 02:33:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469256204] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:33:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:33:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:33:20,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118210408] [2023-04-03 02:33:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:33:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:33:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:33:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:33:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:33:20,826 INFO L87 Difference]: Start difference. First operand 4453 states and 5858 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:33:23,224 INFO L93 Difference]: Finished difference Result 8321 states and 11194 transitions. [2023-04-03 02:33:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:33:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 76 [2023-04-03 02:33:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:33:23,230 INFO L225 Difference]: With dead ends: 8321 [2023-04-03 02:33:23,231 INFO L226 Difference]: Without dead ends: 5849 [2023-04-03 02:33:23,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:33:23,235 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 270 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:33:23,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 716 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:33:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2023-04-03 02:33:25,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5415. [2023-04-03 02:33:25,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5411 states have (on average 1.3162077250046202) internal successors, (7122), 5411 states have internal predecessors, (7122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 7125 transitions. [2023-04-03 02:33:25,492 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 7125 transitions. Word has length 76 [2023-04-03 02:33:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:33:25,492 INFO L495 AbstractCegarLoop]: Abstraction has 5415 states and 7125 transitions. [2023-04-03 02:33:25,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 7125 transitions. [2023-04-03 02:33:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 02:33:25,495 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:33:25,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:33:25,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-03 02:33:25,495 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:33:25,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:33:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1992248072, now seen corresponding path program 1 times [2023-04-03 02:33:25,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:33:25,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207735977] [2023-04-03 02:33:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:25,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:33:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:26,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:33:26,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207735977] [2023-04-03 02:33:26,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207735977] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 02:33:26,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688723047] [2023-04-03 02:33:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:26,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 02:33:26,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:33:26,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 02:33:26,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 02:33:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:27,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-03 02:33:27,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 02:33:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-03 02:33:27,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 02:33:27,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688723047] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:33:27,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 02:33:27,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2023-04-03 02:33:27,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111703604] [2023-04-03 02:33:27,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:33:27,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:33:27,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:33:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:33:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-04-03 02:33:27,545 INFO L87 Difference]: Start difference. First operand 5415 states and 7125 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:33:32,050 INFO L93 Difference]: Finished difference Result 9407 states and 12374 transitions. [2023-04-03 02:33:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:33:32,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 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 76 [2023-04-03 02:33:32,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:33:32,059 INFO L225 Difference]: With dead ends: 9407 [2023-04-03 02:33:32,059 INFO L226 Difference]: Without dead ends: 7200 [2023-04-03 02:33:32,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 02:33:32,062 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1208 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:33:32,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1041 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:33:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2023-04-03 02:33:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 5395. [2023-04-03 02:33:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5395 states, 5391 states have (on average 1.316824336857726) internal successors, (7099), 5391 states have internal predecessors, (7099), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 7102 transitions. [2023-04-03 02:33:34,449 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 7102 transitions. Word has length 76 [2023-04-03 02:33:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:33:34,449 INFO L495 AbstractCegarLoop]: Abstraction has 5395 states and 7102 transitions. [2023-04-03 02:33:34,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:33:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 7102 transitions. [2023-04-03 02:33:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:33:34,451 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:33:34,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:33:34,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 02:33:34,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-04-03 02:33:34,653 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:33:34,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:33:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2036063376, now seen corresponding path program 1 times [2023-04-03 02:33:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:33:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480571587] [2023-04-03 02:33:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:33:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:35,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:33:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480571587] [2023-04-03 02:33:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480571587] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 02:33:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964463061] [2023-04-03 02:33:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:33:35,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 02:33:35,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:33:35,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 02:33:35,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 02:33:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:33:36,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 47 conjunts are in the unsatisfiable core [2023-04-03 02:33:36,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 02:33:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:37,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 02:33:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:33:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964463061] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 02:33:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [617049952] [2023-04-03 02:33:42,168 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-04-03 02:33:42,168 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 02:33:42,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 02:33:42,175 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 02:33:42,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 02:33:44,866 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 404 for LOIs [2023-04-03 02:33:56,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 316 for LOIs [2023-04-03 02:33:56,656 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 02:35:08,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [617049952] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:35:08,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 02:35:08,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [16, 16, 17] total 73 [2023-04-03 02:35:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504493979] [2023-04-03 02:35:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:35:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 02:35:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:35:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 02:35:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=4347, Unknown=0, NotChecked=0, Total=5256 [2023-04-03 02:35:08,764 INFO L87 Difference]: Start difference. First operand 5395 states and 7102 transitions. Second operand has 33 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:35:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:35:28,957 INFO L93 Difference]: Finished difference Result 7585 states and 10035 transitions. [2023-04-03 02:35:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-04-03 02:35:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 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 77 [2023-04-03 02:35:28,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:35:28,964 INFO L225 Difference]: With dead ends: 7585 [2023-04-03 02:35:28,964 INFO L226 Difference]: Without dead ends: 5383 [2023-04-03 02:35:28,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2355 ImplicationChecksByTransitivity, 76.9s TimeCoverageRelationStatistics Valid=932, Invalid=4470, Unknown=0, NotChecked=0, Total=5402 [2023-04-03 02:35:28,971 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 5 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 6298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 6299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:35:28,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 705 Invalid, 6299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6298 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-04-03 02:35:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2023-04-03 02:35:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 5383. [2023-04-03 02:35:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5383 states, 5379 states have (on average 1.3173452314556608) internal successors, (7086), 5379 states have internal predecessors, (7086), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:35:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5383 states to 5383 states and 7089 transitions. [2023-04-03 02:35:31,304 INFO L78 Accepts]: Start accepts. Automaton has 5383 states and 7089 transitions. Word has length 77 [2023-04-03 02:35:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:35:31,304 INFO L495 AbstractCegarLoop]: Abstraction has 5383 states and 7089 transitions. [2023-04-03 02:35:31,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:35:31,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5383 states and 7089 transitions. [2023-04-03 02:35:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:35:31,306 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:35:31,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:35:31,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-03 02:35:31,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-04-03 02:35:31,507 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:35:31,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:35:31,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1878864772, now seen corresponding path program 1 times [2023-04-03 02:35:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:35:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937506770] [2023-04-03 02:35:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:35:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:35:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:35:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:35:32,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:35:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937506770] [2023-04-03 02:35:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937506770] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 02:35:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437822037] [2023-04-03 02:35:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:35:32,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 02:35:32,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:35:32,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 02:35:32,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 02:35:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:35:32,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-03 02:35:32,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 02:35:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-03 02:35:33,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 02:35:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437822037] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:35:33,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 02:35:33,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-04-03 02:35:33,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160917245] [2023-04-03 02:35:33,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:35:33,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 02:35:33,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:35:33,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 02:35:33,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2023-04-03 02:35:33,212 INFO L87 Difference]: Start difference. First operand 5383 states and 7089 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:35:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:35:38,806 INFO L93 Difference]: Finished difference Result 12562 states and 16671 transitions. [2023-04-03 02:35:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 02:35:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 77 [2023-04-03 02:35:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:35:38,820 INFO L225 Difference]: With dead ends: 12562 [2023-04-03 02:35:38,820 INFO L226 Difference]: Without dead ends: 10362 [2023-04-03 02:35:38,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2023-04-03 02:35:38,825 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1195 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:35:38,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1161 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:35:38,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2023-04-03 02:35:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 5365. [2023-04-03 02:35:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5361 states have (on average 1.3180376795373998) internal successors, (7066), 5361 states have internal predecessors, (7066), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:35:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7069 transitions. [2023-04-03 02:35:41,326 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7069 transitions. Word has length 77 [2023-04-03 02:35:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:35:41,327 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 7069 transitions. [2023-04-03 02:35:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:35:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7069 transitions. [2023-04-03 02:35:41,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:35:41,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:35:41,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:35:41,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-03 02:35:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 02:35:41,530 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 02:35:41,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:35:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1753052629, now seen corresponding path program 1 times [2023-04-03 02:35:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:35:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924680929] [2023-04-03 02:35:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:35:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:35:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:35:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:35:42,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:35:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924680929] [2023-04-03 02:35:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924680929] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 02:35:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838178261] [2023-04-03 02:35:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:35:42,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 02:35:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:35:42,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 02:35:42,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-03 02:35:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:35:42,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 47 conjunts are in the unsatisfiable core [2023-04-03 02:35:42,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 02:35:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:35:43,769 INFO L327 TraceCheckSpWp]: Computing backward predicates...