/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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 03:23:38,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 03:23:38,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 03:23:38,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 03:23:38,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 03:23:38,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 03:23:38,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 03:23:38,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 03:23:38,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 03:23:38,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 03:23:38,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 03:23:38,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 03:23:38,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 03:23:38,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 03:23:38,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 03:23:38,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 03:23:38,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 03:23:38,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 03:23:38,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 03:23:38,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 03:23:38,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 03:23:38,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 03:23:38,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 03:23:38,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 03:23:38,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 03:23:38,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 03:23:38,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 03:23:38,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 03:23:38,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 03:23:38,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 03:23:38,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 03:23:38,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 03:23:38,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 03:23:38,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 03:23:38,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 03:23:38,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 03:23:38,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 03:23:38,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 03:23:38,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 03:23:38,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 03:23:38,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 03:23:38,872 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 03:23:38,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 03:23:38,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 03:23:38,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 03:23:38,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 03:23:38,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 03:23:38,910 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 03:23:38,910 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 03:23:38,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 03:23:38,910 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 03:23:38,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 03:23:38,911 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 03:23:38,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 03:23:38,911 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 03:23:38,911 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 03:23:38,912 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 03:23:38,912 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 03:23:38,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 03:23:38,912 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 03:23:38,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 03:23:38,912 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 03:23:38,913 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 03:23:38,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 03:23:38,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 03:23:38,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 03:23:38,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:23:38,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 03:23:38,914 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 03:23:38,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 03:23:38,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 03:23:38,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 03:23:38,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 03:23:38,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 03:23:38,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 03:23:38,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 03:23:39,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 03:23:39,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 03:23:39,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 03:23:39,140 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 03:23:39,141 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 03:23:39,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:23:40,334 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 03:23:40,580 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 03:23:40,581 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:23:40,600 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e59788de/b57e4d805c1b4fd6aff01685a64f0b67/FLAG7c74fea23 [2023-04-03 03:23:40,610 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e59788de/b57e4d805c1b4fd6aff01685a64f0b67 [2023-04-03 03:23:40,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 03:23:40,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 03:23:40,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 03:23:40,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 03:23:40,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 03:23:40,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:23:40" (1/1) ... [2023-04-03 03:23:40,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5145c036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:40, skipping insertion in model container [2023-04-03 03:23:40,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 03:23:40" (1/1) ... [2023-04-03 03:23:40,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 03:23:40,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 03:23:40,946 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2023-04-03 03:23:40,957 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2023-04-03 03:23:41,033 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2023-04-03 03:23:41,039 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2023-04-03 03:23:41,051 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2023-04-03 03:23:41,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:23:41,121 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 03:23:41,280 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2023-04-03 03:23:41,296 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2023-04-03 03:23:41,353 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2023-04-03 03:23:41,358 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2023-04-03 03:23:41,366 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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2023-04-03 03:23:41,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 03:23:41,399 INFO L208 MainTranslator]: Completed translation [2023-04-03 03:23:41,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41 WrapperNode [2023-04-03 03:23:41,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 03:23:41,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 03:23:41,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 03:23:41,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 03:23:41,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 03:23:41,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 03:23:41,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 03:23:41,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 03:23:41,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (1/1) ... [2023-04-03 03:23:41,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 03:23:41,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 03:23:41,564 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 03:23:41,585 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 03:23:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 03:23:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 03:23:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 03:23:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 03:23:41,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 03:23:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 03:23:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 03:23:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 03:23:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 03:23:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 03:23:41,804 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 03:23:41,806 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 03:23:42,987 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 03:23:43,380 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 03:23:43,381 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 03:23:43,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:23:43 BoogieIcfgContainer [2023-04-03 03:23:43,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 03:23:43,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 03:23:43,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 03:23:43,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 03:23:43,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 03:23:40" (1/3) ... [2023-04-03 03:23:43,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f394d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:23:43, skipping insertion in model container [2023-04-03 03:23:43,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 03:23:41" (2/3) ... [2023-04-03 03:23:43,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f394d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 03:23:43, skipping insertion in model container [2023-04-03 03:23:43,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 03:23:43" (3/3) ... [2023-04-03 03:23:43,393 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 03:23:43,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 03:23:43,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-04-03 03:23:43,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 03:23:43,486 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;@5f632305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 03:23:43,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-04-03 03:23:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 310 states have (on average 1.8064516129032258) internal successors, (560), 321 states have internal predecessors, (560), 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 03:23:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-04-03 03:23:43,505 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:43,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:43,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:43,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2113033284, now seen corresponding path program 1 times [2023-04-03 03:23:43,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:43,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765565461] [2023-04-03 03:23:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:43,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:23:45,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765565461] [2023-04-03 03:23:45,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765565461] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:45,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:45,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:23:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735476500] [2023-04-03 03:23:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:45,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:23:45,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:23:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:23:45,099 INFO L87 Difference]: Start difference. First operand has 326 states, 310 states have (on average 1.8064516129032258) internal successors, (560), 321 states have internal predecessors, (560), 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 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 03:23:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:45,443 INFO L93 Difference]: Finished difference Result 834 states and 1434 transitions. [2023-04-03 03:23:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 03:23:45,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 123 [2023-04-03 03:23:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:45,463 INFO L225 Difference]: With dead ends: 834 [2023-04-03 03:23:45,463 INFO L226 Difference]: Without dead ends: 558 [2023-04-03 03:23:45,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:23:45,477 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 2306 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:45,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 1055 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 03:23:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-04-03 03:23:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2023-04-03 03:23:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 528 states have (on average 1.3200757575757576) internal successors, (697), 532 states have internal predecessors, (697), 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 03:23:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 700 transitions. [2023-04-03 03:23:45,585 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 700 transitions. Word has length 123 [2023-04-03 03:23:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:45,585 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 700 transitions. [2023-04-03 03:23:45,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 03:23:45,586 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 700 transitions. [2023-04-03 03:23:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-03 03:23:45,593 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:45,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 03:23:45,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:45,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash 621674658, now seen corresponding path program 1 times [2023-04-03 03:23:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:45,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33556853] [2023-04-03 03:23:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:45,747 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 03:23:45,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:45,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33556853] [2023-04-03 03:23:45,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33556853] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:45,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:45,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:23:45,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364048779] [2023-04-03 03:23:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:45,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:23:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:45,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:23:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:23:45,762 INFO L87 Difference]: Start difference. First operand 536 states and 700 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 03:23:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:45,936 INFO L93 Difference]: Finished difference Result 1155 states and 1524 transitions. [2023-04-03 03:23:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:23:45,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 125 [2023-04-03 03:23:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:45,940 INFO L225 Difference]: With dead ends: 1155 [2023-04-03 03:23:45,940 INFO L226 Difference]: Without dead ends: 709 [2023-04-03 03:23:45,942 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 03:23:45,943 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 211 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:45,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 767 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-04-03 03:23:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 645. [2023-04-03 03:23:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 637 states have (on average 1.3547880690737835) internal successors, (863), 641 states have internal predecessors, (863), 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 03:23:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 866 transitions. [2023-04-03 03:23:46,006 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 866 transitions. Word has length 125 [2023-04-03 03:23:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:46,006 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 866 transitions. [2023-04-03 03:23:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 03:23:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 866 transitions. [2023-04-03 03:23:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-03 03:23:46,008 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:46,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 03:23:46,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:46,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -583558294, now seen corresponding path program 1 times [2023-04-03 03:23:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397007385] [2023-04-03 03:23:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:23:46,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397007385] [2023-04-03 03:23:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397007385] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:46,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:23:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296955902] [2023-04-03 03:23:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:23:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:23:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:23:46,113 INFO L87 Difference]: Start difference. First operand 645 states and 866 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 03:23:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:46,294 INFO L93 Difference]: Finished difference Result 1492 states and 2047 transitions. [2023-04-03 03:23:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:23:46,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 125 [2023-04-03 03:23:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:46,299 INFO L225 Difference]: With dead ends: 1492 [2023-04-03 03:23:46,299 INFO L226 Difference]: Without dead ends: 912 [2023-04-03 03:23:46,300 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 03:23:46,301 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 222 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:46,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 779 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-04-03 03:23:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 843. [2023-04-03 03:23:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 835 states have (on average 1.392814371257485) internal successors, (1163), 839 states have internal predecessors, (1163), 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 03:23:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1166 transitions. [2023-04-03 03:23:46,388 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1166 transitions. Word has length 125 [2023-04-03 03:23:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:46,389 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1166 transitions. [2023-04-03 03:23:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 03:23:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1166 transitions. [2023-04-03 03:23:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-03 03:23:46,390 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:46,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 03:23:46,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:46,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1272153261, now seen corresponding path program 1 times [2023-04-03 03:23:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:46,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600961802] [2023-04-03 03:23:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:47,135 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 03:23:47,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600961802] [2023-04-03 03:23:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600961802] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:47,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:47,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:23:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772217649] [2023-04-03 03:23:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:47,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:23:47,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:23:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:23:47,137 INFO L87 Difference]: Start difference. First operand 843 states and 1166 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 03:23:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:47,446 INFO L93 Difference]: Finished difference Result 2248 states and 3111 transitions. [2023-04-03 03:23:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:23:47,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 128 [2023-04-03 03:23:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:47,453 INFO L225 Difference]: With dead ends: 2248 [2023-04-03 03:23:47,453 INFO L226 Difference]: Without dead ends: 1501 [2023-04-03 03:23:47,455 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 03:23:47,455 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1010 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:47,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 947 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2023-04-03 03:23:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1479. [2023-04-03 03:23:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1471 states have (on average 1.3820530251529572) internal successors, (2033), 1475 states have internal predecessors, (2033), 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 03:23:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2036 transitions. [2023-04-03 03:23:47,660 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2036 transitions. Word has length 128 [2023-04-03 03:23:47,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:47,660 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 2036 transitions. [2023-04-03 03:23:47,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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 03:23:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2036 transitions. [2023-04-03 03:23:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-03 03:23:47,662 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:47,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:47,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 03:23:47,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:47,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:47,663 INFO L85 PathProgramCache]: Analyzing trace with hash -664918791, now seen corresponding path program 1 times [2023-04-03 03:23:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:47,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923508978] [2023-04-03 03:23:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:47,770 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 03:23:47,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:47,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923508978] [2023-04-03 03:23:47,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923508978] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:47,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:23:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935657646] [2023-04-03 03:23:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:47,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:23:47,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:47,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:23:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:23:47,774 INFO L87 Difference]: Start difference. First operand 1479 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 03:23:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:48,185 INFO L93 Difference]: Finished difference Result 3693 states and 5189 transitions. [2023-04-03 03:23:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:23:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 130 [2023-04-03 03:23:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:48,194 INFO L225 Difference]: With dead ends: 3693 [2023-04-03 03:23:48,194 INFO L226 Difference]: Without dead ends: 2264 [2023-04-03 03:23:48,196 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 03:23:48,197 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 239 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:48,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 796 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2023-04-03 03:23:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2095. [2023-04-03 03:23:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2087 states have (on average 1.4144705318639195) internal successors, (2952), 2091 states have internal predecessors, (2952), 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 03:23:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 2955 transitions. [2023-04-03 03:23:48,471 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 2955 transitions. Word has length 130 [2023-04-03 03:23:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:48,471 INFO L495 AbstractCegarLoop]: Abstraction has 2095 states and 2955 transitions. [2023-04-03 03:23:48,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 03:23:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 2955 transitions. [2023-04-03 03:23:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-03 03:23:48,473 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:48,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:48,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 03:23:48,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:48,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1155354492, now seen corresponding path program 1 times [2023-04-03 03:23:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:48,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219429692] [2023-04-03 03:23:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:48,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:49,213 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 03:23:49,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219429692] [2023-04-03 03:23:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219429692] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:49,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:49,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:23:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575717029] [2023-04-03 03:23:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:49,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:23:49,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:23:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:23:49,215 INFO L87 Difference]: Start difference. First operand 2095 states and 2955 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 03:23:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:49,930 INFO L93 Difference]: Finished difference Result 5897 states and 8361 transitions. [2023-04-03 03:23:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:23:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 133 [2023-04-03 03:23:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:49,947 INFO L225 Difference]: With dead ends: 5897 [2023-04-03 03:23:49,947 INFO L226 Difference]: Without dead ends: 3990 [2023-04-03 03:23:49,953 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 03:23:49,954 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 685 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:49,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1003 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:49,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2023-04-03 03:23:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 3968. [2023-04-03 03:23:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3960 states have (on average 1.4083333333333334) internal successors, (5577), 3964 states have internal predecessors, (5577), 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 03:23:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5580 transitions. [2023-04-03 03:23:50,566 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5580 transitions. Word has length 133 [2023-04-03 03:23:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:50,567 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5580 transitions. [2023-04-03 03:23:50,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 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 03:23:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5580 transitions. [2023-04-03 03:23:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-03 03:23:50,571 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:50,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:50,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 03:23:50,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:50,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash 780654199, now seen corresponding path program 1 times [2023-04-03 03:23:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095891747] [2023-04-03 03:23:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:50,749 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 03:23:50,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:50,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095891747] [2023-04-03 03:23:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095891747] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:23:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719828191] [2023-04-03 03:23:50,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:50,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:23:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:23:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:23:50,752 INFO L87 Difference]: Start difference. First operand 3968 states and 5580 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 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 03:23:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:51,695 INFO L93 Difference]: Finished difference Result 7890 states and 11109 transitions. [2023-04-03 03:23:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:23:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 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 133 [2023-04-03 03:23:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:51,711 INFO L225 Difference]: With dead ends: 7890 [2023-04-03 03:23:51,711 INFO L226 Difference]: Without dead ends: 3968 [2023-04-03 03:23:51,719 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 03:23:51,720 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1117 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:51,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 315 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:51,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2023-04-03 03:23:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3968. [2023-04-03 03:23:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3960 states have (on average 1.393939393939394) internal successors, (5520), 3964 states have internal predecessors, (5520), 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 03:23:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5523 transitions. [2023-04-03 03:23:52,260 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5523 transitions. Word has length 133 [2023-04-03 03:23:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:52,261 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5523 transitions. [2023-04-03 03:23:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 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 03:23:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5523 transitions. [2023-04-03 03:23:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-03 03:23:52,264 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:52,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:52,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 03:23:52,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:52,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1523776206, now seen corresponding path program 1 times [2023-04-03 03:23:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:52,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311076608] [2023-04-03 03:23:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:53,350 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 03:23:53,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:53,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311076608] [2023-04-03 03:23:53,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311076608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:53,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 03:23:53,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279605417] [2023-04-03 03:23:53,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:53,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 03:23:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:53,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 03:23:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:23:53,353 INFO L87 Difference]: Start difference. First operand 3968 states and 5523 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 03:23:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:23:54,759 INFO L93 Difference]: Finished difference Result 10621 states and 15032 transitions. [2023-04-03 03:23:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 03:23:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 133 [2023-04-03 03:23:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:23:54,786 INFO L225 Difference]: With dead ends: 10621 [2023-04-03 03:23:54,786 INFO L226 Difference]: Without dead ends: 7139 [2023-04-03 03:23:54,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-04-03 03:23:54,794 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1511 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:23:54,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1076 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:23:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2023-04-03 03:23:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 4800. [2023-04-03 03:23:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4792 states have (on average 1.3904424040066778) internal successors, (6663), 4796 states have internal predecessors, (6663), 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 03:23:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 6666 transitions. [2023-04-03 03:23:55,608 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 6666 transitions. Word has length 133 [2023-04-03 03:23:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:23:55,609 INFO L495 AbstractCegarLoop]: Abstraction has 4800 states and 6666 transitions. [2023-04-03 03:23:55,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 03:23:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 6666 transitions. [2023-04-03 03:23:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:23:55,612 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:23:55,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:23:55,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 03:23:55,613 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:23:55,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:23:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -999354007, now seen corresponding path program 1 times [2023-04-03 03:23:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:23:55,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33295608] [2023-04-03 03:23:55,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:23:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:23:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:23:58,075 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 03:23:58,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:23:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33295608] [2023-04-03 03:23:58,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33295608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:23:58,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:23:58,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-04-03 03:23:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352020313] [2023-04-03 03:23:58,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:23:58,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-03 03:23:58,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:23:58,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-03 03:23:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-04-03 03:23:58,078 INFO L87 Difference]: Start difference. First operand 4800 states and 6666 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:01,220 INFO L93 Difference]: Finished difference Result 6802 states and 9376 transitions. [2023-04-03 03:24:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-03 03:24:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:01,241 INFO L225 Difference]: With dead ends: 6802 [2023-04-03 03:24:01,242 INFO L226 Difference]: Without dead ends: 5416 [2023-04-03 03:24:01,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2023-04-03 03:24:01,247 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 949 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:01,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 4324 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:24:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2023-04-03 03:24:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 4970. [2023-04-03 03:24:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 4962 states have (on average 1.3847239016525594) internal successors, (6871), 4966 states have internal predecessors, (6871), 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 03:24:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 6874 transitions. [2023-04-03 03:24:02,071 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 6874 transitions. Word has length 138 [2023-04-03 03:24:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:24:02,071 INFO L495 AbstractCegarLoop]: Abstraction has 4970 states and 6874 transitions. [2023-04-03 03:24:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 6874 transitions. [2023-04-03 03:24:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:24:02,075 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:24:02,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:24:02,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 03:24:02,076 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:24:02,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:24:02,077 INFO L85 PathProgramCache]: Analyzing trace with hash 965472196, now seen corresponding path program 1 times [2023-04-03 03:24:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:24:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359572931] [2023-04-03 03:24:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:24:02,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:24:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:24:02,171 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 03:24:02,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:24:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359572931] [2023-04-03 03:24:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359572931] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:24:02,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:24:02,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:24:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194740332] [2023-04-03 03:24:02,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:24:02,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:24:02,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:24:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:24:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:24:02,173 INFO L87 Difference]: Start difference. First operand 4970 states and 6874 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:03,361 INFO L93 Difference]: Finished difference Result 9650 states and 13512 transitions. [2023-04-03 03:24:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:24:03,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:03,387 INFO L225 Difference]: With dead ends: 9650 [2023-04-03 03:24:03,387 INFO L226 Difference]: Without dead ends: 6728 [2023-04-03 03:24:03,397 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 03:24:03,398 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 146 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:03,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 793 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:24:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6728 states. [2023-04-03 03:24:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6728 to 6336. [2023-04-03 03:24:04,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6328 states have (on average 1.3933312262958282) internal successors, (8817), 6332 states have internal predecessors, (8817), 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 03:24:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 8820 transitions. [2023-04-03 03:24:04,333 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 8820 transitions. Word has length 138 [2023-04-03 03:24:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:24:04,333 INFO L495 AbstractCegarLoop]: Abstraction has 6336 states and 8820 transitions. [2023-04-03 03:24:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 8820 transitions. [2023-04-03 03:24:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:24:04,338 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:24:04,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:24:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 03:24:04,338 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:24:04,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:24:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1798360151, now seen corresponding path program 1 times [2023-04-03 03:24:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:24:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528305475] [2023-04-03 03:24:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:24:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:24:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:24:04,489 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 03:24:04,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:24:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528305475] [2023-04-03 03:24:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528305475] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:24:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:24:04,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 03:24:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765288679] [2023-04-03 03:24:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:24:04,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 03:24:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:24:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 03:24:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 03:24:04,491 INFO L87 Difference]: Start difference. First operand 6336 states and 8820 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:05,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:05,453 INFO L93 Difference]: Finished difference Result 10068 states and 14032 transitions. [2023-04-03 03:24:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 03:24:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:05,465 INFO L225 Difference]: With dead ends: 10068 [2023-04-03 03:24:05,465 INFO L226 Difference]: Without dead ends: 4970 [2023-04-03 03:24:05,472 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 03:24:05,472 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 1078 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:05,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 321 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:24:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2023-04-03 03:24:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4970. [2023-04-03 03:24:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 4962 states have (on average 1.373236598145909) internal successors, (6814), 4966 states have internal predecessors, (6814), 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 03:24:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 6817 transitions. [2023-04-03 03:24:06,087 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 6817 transitions. Word has length 138 [2023-04-03 03:24:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:24:06,087 INFO L495 AbstractCegarLoop]: Abstraction has 4970 states and 6817 transitions. [2023-04-03 03:24:06,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 6817 transitions. [2023-04-03 03:24:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:24:06,092 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:24:06,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:24:06,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 03:24:06,092 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:24:06,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:24:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1111562162, now seen corresponding path program 1 times [2023-04-03 03:24:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:24:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663578767] [2023-04-03 03:24:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:24:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:24:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:24:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 03:24:06,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:24:06,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663578767] [2023-04-03 03:24:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663578767] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:24:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:24:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 03:24:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404846673] [2023-04-03 03:24:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:24:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 03:24:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:24:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 03:24:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 03:24:06,190 INFO L87 Difference]: Start difference. First operand 4970 states and 6817 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:07,216 INFO L93 Difference]: Finished difference Result 9701 states and 13382 transitions. [2023-04-03 03:24:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 03:24:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:07,234 INFO L225 Difference]: With dead ends: 9701 [2023-04-03 03:24:07,235 INFO L226 Difference]: Without dead ends: 7351 [2023-04-03 03:24:07,241 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 03:24:07,242 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 274 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:07,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 823 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 03:24:07,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2023-04-03 03:24:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 7329. [2023-04-03 03:24:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7321 states have (on average 1.362109001502527) internal successors, (9972), 7325 states have internal predecessors, (9972), 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 03:24:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 9975 transitions. [2023-04-03 03:24:08,250 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 9975 transitions. Word has length 138 [2023-04-03 03:24:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:24:08,251 INFO L495 AbstractCegarLoop]: Abstraction has 7329 states and 9975 transitions. [2023-04-03 03:24:08,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 9975 transitions. [2023-04-03 03:24:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:24:08,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:24:08,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:24:08,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 03:24:08,259 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:24:08,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:24:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2051746566, now seen corresponding path program 1 times [2023-04-03 03:24:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:24:08,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978855704] [2023-04-03 03:24:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:24:08,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:24:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:24:12,572 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 03:24:12,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:24:12,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978855704] [2023-04-03 03:24:12,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978855704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:24:12,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:24:12,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2023-04-03 03:24:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967458654] [2023-04-03 03:24:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:24:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 03:24:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:24:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 03:24:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2023-04-03 03:24:12,575 INFO L87 Difference]: Start difference. First operand 7329 states and 9975 transitions. Second operand has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 32 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:21,891 INFO L93 Difference]: Finished difference Result 22271 states and 30820 transitions. [2023-04-03 03:24:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-04-03 03:24:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 32 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:21,931 INFO L225 Difference]: With dead ends: 22271 [2023-04-03 03:24:21,931 INFO L226 Difference]: Without dead ends: 15552 [2023-04-03 03:24:21,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=733, Invalid=4097, Unknown=0, NotChecked=0, Total=4830 [2023-04-03 03:24:21,949 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 3222 mSDsluCounter, 8636 mSDsCounter, 0 mSdLazyCounter, 5308 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 9062 SdHoareTripleChecker+Invalid, 5398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 5308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:21,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3222 Valid, 9062 Invalid, 5398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 5308 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-03 03:24:21,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15552 states. [2023-04-03 03:24:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15552 to 9060. [2023-04-03 03:24:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9060 states, 9052 states have (on average 1.3592576226248343) internal successors, (12304), 9056 states have internal predecessors, (12304), 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 03:24:23,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9060 states to 9060 states and 12307 transitions. [2023-04-03 03:24:23,478 INFO L78 Accepts]: Start accepts. Automaton has 9060 states and 12307 transitions. Word has length 138 [2023-04-03 03:24:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:24:23,478 INFO L495 AbstractCegarLoop]: Abstraction has 9060 states and 12307 transitions. [2023-04-03 03:24:23,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 32 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 9060 states and 12307 transitions. [2023-04-03 03:24:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:24:23,485 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:24:23,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:23,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 03:24:23,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:24:23,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:24:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2021567402, now seen corresponding path program 1 times [2023-04-03 03:24:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:24:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148352472] [2023-04-03 03:24:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:24:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:24:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:24:24,499 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 03:24:24,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:24:24,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148352472] [2023-04-03 03:24:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148352472] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:24:24,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:24:24,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:24:24,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474811335] [2023-04-03 03:24:24,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:24:24,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:24:24,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:24:24,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:24:24,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:24:24,501 INFO L87 Difference]: Start difference. First operand 9060 states and 12307 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:29,142 INFO L93 Difference]: Finished difference Result 27965 states and 38989 transitions. [2023-04-03 03:24:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:24:29,143 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:29,197 INFO L225 Difference]: With dead ends: 27965 [2023-04-03 03:24:29,197 INFO L226 Difference]: Without dead ends: 22910 [2023-04-03 03:24:29,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:24:29,215 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3016 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:29,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3016 Valid, 1960 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:24:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22910 states. [2023-04-03 03:24:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22910 to 21569. [2023-04-03 03:24:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21569 states, 21561 states have (on average 1.3917721812531887) internal successors, (30008), 21565 states have internal predecessors, (30008), 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 03:24:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21569 states to 21569 states and 30011 transitions. [2023-04-03 03:24:33,390 INFO L78 Accepts]: Start accepts. Automaton has 21569 states and 30011 transitions. Word has length 138 [2023-04-03 03:24:33,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:24:33,390 INFO L495 AbstractCegarLoop]: Abstraction has 21569 states and 30011 transitions. [2023-04-03 03:24:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 21569 states and 30011 transitions. [2023-04-03 03:24:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:24:33,398 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:24:33,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:24:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 03:24:33,398 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:24:33,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:24:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1063899018, now seen corresponding path program 1 times [2023-04-03 03:24:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:24:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462367426] [2023-04-03 03:24:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:24:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:24:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:24:34,288 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 03:24:34,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:24:34,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462367426] [2023-04-03 03:24:34,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462367426] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:24:34,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:24:34,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:24:34,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783898000] [2023-04-03 03:24:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:24:34,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:24:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:24:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:24:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:24:34,291 INFO L87 Difference]: Start difference. First operand 21569 states and 30011 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:24:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:24:54,484 INFO L93 Difference]: Finished difference Result 105917 states and 150014 transitions. [2023-04-03 03:24:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-03 03:24:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:24:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:24:54,744 INFO L225 Difference]: With dead ends: 105917 [2023-04-03 03:24:54,744 INFO L226 Difference]: Without dead ends: 83918 [2023-04-03 03:24:54,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2023-04-03 03:24:54,814 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2415 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 03:24:54,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 3053 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 03:24:54,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83918 states. [2023-04-03 03:25:11,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83918 to 74770. [2023-04-03 03:25:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74770 states, 74762 states have (on average 1.3876300794521281) internal successors, (103742), 74766 states have internal predecessors, (103742), 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 03:25:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74770 states to 74770 states and 103745 transitions. [2023-04-03 03:25:11,476 INFO L78 Accepts]: Start accepts. Automaton has 74770 states and 103745 transitions. Word has length 138 [2023-04-03 03:25:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:25:11,476 INFO L495 AbstractCegarLoop]: Abstraction has 74770 states and 103745 transitions. [2023-04-03 03:25:11,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:25:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 74770 states and 103745 transitions. [2023-04-03 03:25:11,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:25:11,486 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:25:11,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 03:25:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 03:25:11,486 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:25:11,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:25:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash 841907066, now seen corresponding path program 1 times [2023-04-03 03:25:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:25:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982837379] [2023-04-03 03:25:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:25:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:25:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:25:12,567 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 03:25:12,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:25:12,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982837379] [2023-04-03 03:25:12,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982837379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:25:12,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:25:12,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 03:25:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356772804] [2023-04-03 03:25:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:25:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 03:25:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:25:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 03:25:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-04-03 03:25:12,569 INFO L87 Difference]: Start difference. First operand 74770 states and 103745 transitions. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:26:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 03:26:00,443 INFO L93 Difference]: Finished difference Result 258331 states and 361371 transitions. [2023-04-03 03:26:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-03 03:26:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-04-03 03:26:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 03:26:01,230 INFO L225 Difference]: With dead ends: 258331 [2023-04-03 03:26:01,230 INFO L226 Difference]: Without dead ends: 207011 [2023-04-03 03:26:01,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2023-04-03 03:26:01,322 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 3169 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 03:26:01,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3169 Valid, 1644 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 03:26:01,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207011 states. [2023-04-03 03:26:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207011 to 146867. [2023-04-03 03:26:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146867 states, 146859 states have (on average 1.3906740478962816) internal successors, (204233), 146863 states have internal predecessors, (204233), 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 03:26:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146867 states to 146867 states and 204236 transitions. [2023-04-03 03:26:36,995 INFO L78 Accepts]: Start accepts. Automaton has 146867 states and 204236 transitions. Word has length 138 [2023-04-03 03:26:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 03:26:36,996 INFO L495 AbstractCegarLoop]: Abstraction has 146867 states and 204236 transitions. [2023-04-03 03:26:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 11 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 03:26:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 146867 states and 204236 transitions. [2023-04-03 03:26:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-03 03:26:37,004 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 03:26:37,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:37,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 03:26:37,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-04-03 03:26:37,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 03:26:37,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1730285427, now seen corresponding path program 1 times [2023-04-03 03:26:37,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 03:26:37,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443212671] [2023-04-03 03:26:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 03:26:37,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 03:26:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 03:26:42,582 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 03:26:42,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 03:26:42,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443212671] [2023-04-03 03:26:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443212671] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 03:26:42,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 03:26:42,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2023-04-03 03:26:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480666306] [2023-04-03 03:26:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 03:26:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-03 03:26:42,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 03:26:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-03 03:26:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2023-04-03 03:26:42,584 INFO L87 Difference]: Start difference. First operand 146867 states and 204236 transitions. Second operand has 34 states, 34 states have (on average 3.9705882352941178) internal successors, (135), 33 states have internal predecessors, (135), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)