/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:28:28,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:28:28,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:28:28,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 00:28:28,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 00:28:28,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 00:28:28,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 00:28:28,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 00:28:28,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 00:28:28,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 00:28:28,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 00:28:28,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 00:28:28,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:28:28,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:28:28,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:28:28,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:28:28,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:28:28,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:28:28,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:28:28,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:28:28,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:28:28,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:28:28,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:28:28,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:28:28,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 00:28:28,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 00:28:28,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 00:28:28,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 00:28:28,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 00:28:28,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 00:28:28,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 00:28:28,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 00:28:28,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 00:28:28,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 00:28:28,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 00:28:28,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 00:28:28,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 00:28:28,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 00:28:28,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:28:28,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:28:28,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:28:28,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:28:28,381 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:28:28,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:28:28,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:28:28,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:28:28,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:28:28,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:28:28,383 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:28:28,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:28:28,384 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:28:28,384 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:28:28,384 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:28:28,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:28:28,385 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:28:28,385 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:28:28,385 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:28:28,385 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:28:28,385 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:28:28,385 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:28:28,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:28:28,386 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:28:28,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:28:28,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:28:28,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:28:28,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:28:28,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:28:28,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:28:28,387 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:28:28,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:28:28,388 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:28:28,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:28:28,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:28:28,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:28:28,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:28:28,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:28:28,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:28:28,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:28:28,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:28:28,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:28:28,603 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:28:28,606 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:28:28,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-01 00:28:29,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:28:30,096 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:28:30,096 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-01 00:28:30,129 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b58989a/a2287e35ad9a4e2c87206c0e654910fa/FLAG97d14c880 [2023-04-01 00:28:30,142 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3b58989a/a2287e35ad9a4e2c87206c0e654910fa [2023-04-01 00:28:30,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:28:30,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:28:30,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:28:30,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:28:30,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:28:30,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:28:30" (1/1) ... [2023-04-01 00:28:30,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6433f3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:30, skipping insertion in model container [2023-04-01 00:28:30,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:28:30" (1/1) ... [2023-04-01 00:28:30,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:28:30,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:28:30,669 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-04-01 00:28:30,718 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-04-01 00:28:30,727 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-04-01 00:28:30,732 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-04-01 00:28:30,745 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-04-01 00:28:30,750 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-04-01 00:28:30,762 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-04-01 00:28:31,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:28:31,228 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:28:31,288 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2023-04-01 00:28:31,302 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2023-04-01 00:28:31,308 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2023-04-01 00:28:31,311 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2023-04-01 00:28:31,319 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2023-04-01 00:28:31,322 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2023-04-01 00:28:31,328 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2023-04-01 00:28:31,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:28:31,585 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:28:31,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31 WrapperNode [2023-04-01 00:28:31,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:28:31,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:28:31,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:28:31,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:28:31,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,760 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:28:31,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:28:31,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:28:31,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:28:31,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (1/1) ... [2023-04-01 00:28:31,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:28:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:28:31,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 00:28:31,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 00:28:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:28:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:28:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:28:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:28:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:28:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:28:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:28:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:28:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:28:32,348 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:28:32,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:28:34,662 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:28:34,910 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:28:34,910 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:28:34,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:28:34 BoogieIcfgContainer [2023-04-01 00:28:34,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:28:34,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:28:34,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:28:34,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:28:34,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:28:30" (1/3) ... [2023-04-01 00:28:34,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bba6aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:28:34, skipping insertion in model container [2023-04-01 00:28:34,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:28:31" (2/3) ... [2023-04-01 00:28:34,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bba6aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:28:34, skipping insertion in model container [2023-04-01 00:28:34,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:28:34" (3/3) ... [2023-04-01 00:28:34,922 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2023-04-01 00:28:34,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:28:34,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-01 00:28:35,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:28:35,025 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;@5fa25c76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:28:35,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-01 00:28:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 1053 states have (on average 1.8907882241215574) internal successors, (1991), 1060 states have internal predecessors, (1991), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 00:28:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-01 00:28:35,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:35,054 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] [2023-04-01 00:28:35,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:35,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -990909763, now seen corresponding path program 1 times [2023-04-01 00:28:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054226834] [2023-04-01 00:28:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:35,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054226834] [2023-04-01 00:28:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054226834] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:35,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:28:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215491623] [2023-04-01 00:28:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:28:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:28:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:28:35,790 INFO L87 Difference]: Start difference. First operand has 1065 states, 1053 states have (on average 1.8907882241215574) internal successors, (1991), 1060 states have internal predecessors, (1991), 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 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:36,753 INFO L93 Difference]: Finished difference Result 1675 states and 3059 transitions. [2023-04-01 00:28:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:28:36,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 67 [2023-04-01 00:28:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:36,769 INFO L225 Difference]: With dead ends: 1675 [2023-04-01 00:28:36,769 INFO L226 Difference]: Without dead ends: 926 [2023-04-01 00:28:36,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:28:36,779 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4638 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4638 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:36,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4638 Valid, 1187 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 00:28:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-04-01 00:28:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 918. [2023-04-01 00:28:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 908 states have (on average 1.303964757709251) internal successors, (1184), 914 states have internal predecessors, (1184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1187 transitions. [2023-04-01 00:28:36,864 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1187 transitions. Word has length 67 [2023-04-01 00:28:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:36,865 INFO L495 AbstractCegarLoop]: Abstraction has 918 states and 1187 transitions. [2023-04-01 00:28:36,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1187 transitions. [2023-04-01 00:28:36,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:28:36,868 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:36,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:28:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:28:36,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:36,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash -385426605, now seen corresponding path program 1 times [2023-04-01 00:28:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:36,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231509355] [2023-04-01 00:28:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:37,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231509355] [2023-04-01 00:28:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231509355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:37,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:28:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709023136] [2023-04-01 00:28:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:28:37,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:37,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:28:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:28:37,178 INFO L87 Difference]: Start difference. First operand 918 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:37,717 INFO L93 Difference]: Finished difference Result 1503 states and 1967 transitions. [2023-04-01 00:28:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:28:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 68 [2023-04-01 00:28:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:37,722 INFO L225 Difference]: With dead ends: 1503 [2023-04-01 00:28:37,722 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 00:28:37,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:28:37,724 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2803 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:37,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2803 Valid, 611 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 00:28:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 00:28:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1004. [2023-04-01 00:28:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 994 states have (on average 1.2857142857142858) internal successors, (1278), 1000 states have internal predecessors, (1278), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1281 transitions. [2023-04-01 00:28:37,771 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1281 transitions. Word has length 68 [2023-04-01 00:28:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:37,771 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1281 transitions. [2023-04-01 00:28:37,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1281 transitions. [2023-04-01 00:28:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:28:37,774 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:37,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:28:37,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:28:37,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:37,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:37,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1878986256, now seen corresponding path program 1 times [2023-04-01 00:28:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:37,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996475952] [2023-04-01 00:28:37,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:37,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:37,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:37,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996475952] [2023-04-01 00:28:37,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996475952] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:37,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:37,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:28:37,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617203466] [2023-04-01 00:28:37,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:37,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:28:37,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:28:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:37,974 INFO L87 Difference]: Start difference. First operand 1004 states and 1281 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:38,200 INFO L93 Difference]: Finished difference Result 1693 states and 2253 transitions. [2023-04-01 00:28:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:28:38,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 00:28:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:38,207 INFO L225 Difference]: With dead ends: 1693 [2023-04-01 00:28:38,207 INFO L226 Difference]: Without dead ends: 1354 [2023-04-01 00:28:38,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:38,212 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 470 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:38,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1414 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:28:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-04-01 00:28:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1346. [2023-04-01 00:28:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1336 states have (on average 1.3173652694610778) internal successors, (1760), 1342 states have internal predecessors, (1760), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1763 transitions. [2023-04-01 00:28:38,295 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1763 transitions. Word has length 68 [2023-04-01 00:28:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:38,296 INFO L495 AbstractCegarLoop]: Abstraction has 1346 states and 1763 transitions. [2023-04-01 00:28:38,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1763 transitions. [2023-04-01 00:28:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:28:38,299 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:38,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:28:38,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:28:38,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:38,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2144479579, now seen corresponding path program 1 times [2023-04-01 00:28:38,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:38,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530704961] [2023-04-01 00:28:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:38,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:38,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:38,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530704961] [2023-04-01 00:28:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530704961] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:38,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:28:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862187097] [2023-04-01 00:28:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:38,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:28:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:28:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:38,449 INFO L87 Difference]: Start difference. First operand 1346 states and 1763 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:38,643 INFO L93 Difference]: Finished difference Result 2688 states and 3628 transitions. [2023-04-01 00:28:38,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:28:38,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 00:28:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:38,651 INFO L225 Difference]: With dead ends: 2688 [2023-04-01 00:28:38,651 INFO L226 Difference]: Without dead ends: 1951 [2023-04-01 00:28:38,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:38,660 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 452 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:38,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1464 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:28:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2023-04-01 00:28:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1943. [2023-04-01 00:28:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1933 states have (on average 1.3331608898085876) internal successors, (2577), 1939 states have internal predecessors, (2577), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2580 transitions. [2023-04-01 00:28:38,837 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2580 transitions. Word has length 68 [2023-04-01 00:28:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:38,837 INFO L495 AbstractCegarLoop]: Abstraction has 1943 states and 2580 transitions. [2023-04-01 00:28:38,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2580 transitions. [2023-04-01 00:28:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:28:38,840 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:38,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:28:38,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:28:38,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:38,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:38,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1717073860, now seen corresponding path program 1 times [2023-04-01 00:28:38,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:38,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264672287] [2023-04-01 00:28:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:38,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:38,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:38,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264672287] [2023-04-01 00:28:38,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264672287] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:38,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:38,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:28:38,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266281333] [2023-04-01 00:28:38,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:38,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:28:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:28:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:38,964 INFO L87 Difference]: Start difference. First operand 1943 states and 2580 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:39,293 INFO L93 Difference]: Finished difference Result 4258 states and 5762 transitions. [2023-04-01 00:28:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:28:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-01 00:28:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:39,304 INFO L225 Difference]: With dead ends: 4258 [2023-04-01 00:28:39,304 INFO L226 Difference]: Without dead ends: 3085 [2023-04-01 00:28:39,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:39,307 INFO L413 NwaCegarLoop]: 1150 mSDtfsCounter, 723 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:39,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1728 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:28:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2023-04-01 00:28:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 3077. [2023-04-01 00:28:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3077 states, 3067 states have (on average 1.3338767525268993) internal successors, (4091), 3073 states have internal predecessors, (4091), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:39,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3077 states to 3077 states and 4094 transitions. [2023-04-01 00:28:39,586 INFO L78 Accepts]: Start accepts. Automaton has 3077 states and 4094 transitions. Word has length 68 [2023-04-01 00:28:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:39,586 INFO L495 AbstractCegarLoop]: Abstraction has 3077 states and 4094 transitions. [2023-04-01 00:28:39,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:39,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3077 states and 4094 transitions. [2023-04-01 00:28:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 00:28:39,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:39,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:28:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:28:39,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:39,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2013950252, now seen corresponding path program 1 times [2023-04-01 00:28:39,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729206333] [2023-04-01 00:28:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:39,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729206333] [2023-04-01 00:28:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729206333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:28:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137232869] [2023-04-01 00:28:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:28:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:28:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:28:39,787 INFO L87 Difference]: Start difference. First operand 3077 states and 4094 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:40,625 INFO L93 Difference]: Finished difference Result 7224 states and 9809 transitions. [2023-04-01 00:28:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:28:40,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 68 [2023-04-01 00:28:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:40,642 INFO L225 Difference]: With dead ends: 7224 [2023-04-01 00:28:40,642 INFO L226 Difference]: Without dead ends: 4586 [2023-04-01 00:28:40,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:28:40,650 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2487 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:40,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 585 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:28:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2023-04-01 00:28:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4578. [2023-04-01 00:28:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4578 states, 4568 states have (on average 1.3526707530647986) internal successors, (6179), 4574 states have internal predecessors, (6179), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4578 states to 4578 states and 6182 transitions. [2023-04-01 00:28:41,163 INFO L78 Accepts]: Start accepts. Automaton has 4578 states and 6182 transitions. Word has length 68 [2023-04-01 00:28:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:41,163 INFO L495 AbstractCegarLoop]: Abstraction has 4578 states and 6182 transitions. [2023-04-01 00:28:41,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4578 states and 6182 transitions. [2023-04-01 00:28:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 00:28:41,168 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:41,168 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] [2023-04-01 00:28:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:28:41,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:41,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash 593424523, now seen corresponding path program 1 times [2023-04-01 00:28:41,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:41,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6409267] [2023-04-01 00:28:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:41,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:41,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6409267] [2023-04-01 00:28:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6409267] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:41,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:41,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:28:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173823269] [2023-04-01 00:28:41,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:41,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:28:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:28:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:28:41,354 INFO L87 Difference]: Start difference. First operand 4578 states and 6182 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:42,496 INFO L93 Difference]: Finished difference Result 12195 states and 16676 transitions. [2023-04-01 00:28:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:28:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 69 [2023-04-01 00:28:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:42,528 INFO L225 Difference]: With dead ends: 12195 [2023-04-01 00:28:42,528 INFO L226 Difference]: Without dead ends: 7843 [2023-04-01 00:28:42,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:28:42,538 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2056 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2056 Valid, 531 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 00:28:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2023-04-01 00:28:43,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 7835. [2023-04-01 00:28:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7835 states, 7825 states have (on average 1.35629392971246) internal successors, (10613), 7831 states have internal predecessors, (10613), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7835 states to 7835 states and 10616 transitions. [2023-04-01 00:28:43,303 INFO L78 Accepts]: Start accepts. Automaton has 7835 states and 10616 transitions. Word has length 69 [2023-04-01 00:28:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:43,303 INFO L495 AbstractCegarLoop]: Abstraction has 7835 states and 10616 transitions. [2023-04-01 00:28:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states and 10616 transitions. [2023-04-01 00:28:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-04-01 00:28:43,309 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:43,309 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] [2023-04-01 00:28:43,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:28:43,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:43,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1498451088, now seen corresponding path program 1 times [2023-04-01 00:28:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:43,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916671095] [2023-04-01 00:28:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:43,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916671095] [2023-04-01 00:28:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916671095] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:43,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:43,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:28:43,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064936482] [2023-04-01 00:28:43,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:28:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:43,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:28:43,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:43,447 INFO L87 Difference]: Start difference. First operand 7835 states and 10616 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:44,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:44,727 INFO L93 Difference]: Finished difference Result 21172 states and 28728 transitions. [2023-04-01 00:28:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:28:44,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 70 [2023-04-01 00:28:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:44,778 INFO L225 Difference]: With dead ends: 21172 [2023-04-01 00:28:44,779 INFO L226 Difference]: Without dead ends: 13791 [2023-04-01 00:28:44,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:28:44,797 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 468 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:44,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:28:44,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2023-04-01 00:28:46,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 13783. [2023-04-01 00:28:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13783 states, 13773 states have (on average 1.3426994844986568) internal successors, (18493), 13779 states have internal predecessors, (18493), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13783 states to 13783 states and 18496 transitions. [2023-04-01 00:28:46,296 INFO L78 Accepts]: Start accepts. Automaton has 13783 states and 18496 transitions. Word has length 70 [2023-04-01 00:28:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:46,296 INFO L495 AbstractCegarLoop]: Abstraction has 13783 states and 18496 transitions. [2023-04-01 00:28:46,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 13783 states and 18496 transitions. [2023-04-01 00:28:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:28:46,306 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:46,306 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] [2023-04-01 00:28:46,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:28:46,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:46,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash 248095378, now seen corresponding path program 1 times [2023-04-01 00:28:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:46,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6316956] [2023-04-01 00:28:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:46,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:46,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:46,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6316956] [2023-04-01 00:28:46,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6316956] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:46,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:46,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 00:28:46,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183304136] [2023-04-01 00:28:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:46,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:28:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:28:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:28:46,567 INFO L87 Difference]: Start difference. First operand 13783 states and 18496 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:28:52,145 INFO L93 Difference]: Finished difference Result 52433 states and 70383 transitions. [2023-04-01 00:28:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 00:28:52,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 71 [2023-04-01 00:28:52,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:28:52,315 INFO L225 Difference]: With dead ends: 52433 [2023-04-01 00:28:52,315 INFO L226 Difference]: Without dead ends: 46632 [2023-04-01 00:28:52,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:28:52,347 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 3772 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:28:52,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3772 Valid, 911 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 00:28:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46632 states. [2023-04-01 00:28:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46632 to 13811. [2023-04-01 00:28:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13811 states, 13801 states have (on average 1.3425838707340048) internal successors, (18529), 13807 states have internal predecessors, (18529), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13811 states to 13811 states and 18532 transitions. [2023-04-01 00:28:54,669 INFO L78 Accepts]: Start accepts. Automaton has 13811 states and 18532 transitions. Word has length 71 [2023-04-01 00:28:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:28:54,669 INFO L495 AbstractCegarLoop]: Abstraction has 13811 states and 18532 transitions. [2023-04-01 00:28:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:28:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 13811 states and 18532 transitions. [2023-04-01 00:28:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:28:54,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:28:54,678 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] [2023-04-01 00:28:54,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 00:28:54,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:28:54,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:28:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 789562272, now seen corresponding path program 1 times [2023-04-01 00:28:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:28:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424170052] [2023-04-01 00:28:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:28:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:28:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:28:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:28:54,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:28:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424170052] [2023-04-01 00:28:54,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424170052] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:28:54,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:28:54,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 00:28:54,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956271633] [2023-04-01 00:28:54,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:28:54,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:28:54,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:28:54,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:28:54,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:28:54,909 INFO L87 Difference]: Start difference. First operand 13811 states and 18532 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:29:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:29:03,629 INFO L93 Difference]: Finished difference Result 57012 states and 77026 transitions. [2023-04-01 00:29:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 00:29:03,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 71 [2023-04-01 00:29:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:29:03,747 INFO L225 Difference]: With dead ends: 57012 [2023-04-01 00:29:03,748 INFO L226 Difference]: Without dead ends: 51654 [2023-04-01 00:29:03,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:29:03,773 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 2889 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 00:29:03,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1033 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 00:29:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51654 states. [2023-04-01 00:29:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51654 to 13882. [2023-04-01 00:29:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13882 states, 13872 states have (on average 1.3428489042675893) internal successors, (18628), 13878 states have internal predecessors, (18628), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:29:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13882 states to 13882 states and 18631 transitions. [2023-04-01 00:29:06,014 INFO L78 Accepts]: Start accepts. Automaton has 13882 states and 18631 transitions. Word has length 71 [2023-04-01 00:29:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:29:06,014 INFO L495 AbstractCegarLoop]: Abstraction has 13882 states and 18631 transitions. [2023-04-01 00:29:06,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:29:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 13882 states and 18631 transitions. [2023-04-01 00:29:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:29:06,023 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:29:06,023 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] [2023-04-01 00:29:06,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 00:29:06,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:29:06,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:29:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash 114666909, now seen corresponding path program 1 times [2023-04-01 00:29:06,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:29:06,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296329076] [2023-04-01 00:29:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:29:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:29:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:29:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:29:06,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:29:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296329076] [2023-04-01 00:29:06,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296329076] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:29:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:29:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 00:29:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231711675] [2023-04-01 00:29:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:29:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:29:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:29:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:29:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:29:06,265 INFO L87 Difference]: Start difference. First operand 13882 states and 18631 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:29:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:29:19,775 INFO L93 Difference]: Finished difference Result 71273 states and 97087 transitions. [2023-04-01 00:29:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 00:29:19,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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 71 [2023-04-01 00:29:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:29:19,931 INFO L225 Difference]: With dead ends: 71273 [2023-04-01 00:29:19,932 INFO L226 Difference]: Without dead ends: 65477 [2023-04-01 00:29:19,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-01 00:29:19,960 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 4164 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4164 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 00:29:19,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4164 Valid, 956 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 00:29:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65477 states. [2023-04-01 00:29:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65477 to 13950. [2023-04-01 00:29:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13950 states, 13940 states have (on average 1.3426111908177905) internal successors, (18716), 13946 states have internal predecessors, (18716), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:29:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13950 states to 13950 states and 18719 transitions. [2023-04-01 00:29:23,044 INFO L78 Accepts]: Start accepts. Automaton has 13950 states and 18719 transitions. Word has length 71 [2023-04-01 00:29:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:29:23,044 INFO L495 AbstractCegarLoop]: Abstraction has 13950 states and 18719 transitions. [2023-04-01 00:29:23,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:29:23,044 INFO L276 IsEmpty]: Start isEmpty. Operand 13950 states and 18719 transitions. [2023-04-01 00:29:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 00:29:23,054 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:29:23,054 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] [2023-04-01 00:29:23,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 00:29:23,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-01 00:29:23,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:29:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash -842134178, now seen corresponding path program 1 times [2023-04-01 00:29:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:29:23,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58168406] [2023-04-01 00:29:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:29:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:29:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:29:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:29:23,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:29:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58168406] [2023-04-01 00:29:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58168406] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:29:23,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:29:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 00:29:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551570040] [2023-04-01 00:29:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:29:23,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 00:29:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:29:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 00:29:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:29:23,274 INFO L87 Difference]: Start difference. First operand 13950 states and 18719 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 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)