/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:41:13,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:41:13,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:41:13,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:41:13,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:41:13,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:41:13,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:41:13,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:41:13,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:41:13,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:41:13,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:41:13,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:41:13,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:41:13,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:41:13,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:41:13,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:41:13,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:41:13,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:41:13,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:41:13,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:41:13,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:41:13,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:41:13,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:41:13,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:41:13,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:41:13,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:41:13,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:41:13,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:41:13,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:41:13,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:41:13,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:41:13,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:41:13,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:41:13,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:41:13,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:41:13,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:41:13,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:41:13,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:41:13,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:41:13,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:41:13,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:41:13,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:41:13,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:41:13,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:41:13,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:41:13,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:41:13,383 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:41:13,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:41:13,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:41:13,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:41:13,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:41:13,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:41:13,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:41:13,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:41:13,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:41:13,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:41:13,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:41:13,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:41:13,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:41:13,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:41:13,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:41:13,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:41:13,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:41:13,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:41:13,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:41:13,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:41:13,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:41:13,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:41:13,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:41:13,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:41:13,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:41:13,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:41:13,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:41:13,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:41:13,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:41:13,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:41:13,723 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:41:13,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 04:41:13,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b14201155/8475fa931e8b46b78e424f4ca1d525bc/FLAG45127c312 [2020-08-22 04:41:14,325 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:41:14,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 04:41:14,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b14201155/8475fa931e8b46b78e424f4ca1d525bc/FLAG45127c312 [2020-08-22 04:41:14,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b14201155/8475fa931e8b46b78e424f4ca1d525bc [2020-08-22 04:41:14,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:41:14,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:41:14,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:41:14,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:41:14,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:41:14,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:41:14" (1/1) ... [2020-08-22 04:41:14,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fdeca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:14, skipping insertion in model container [2020-08-22 04:41:14,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:41:14" (1/1) ... [2020-08-22 04:41:14,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:41:14,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:41:15,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:41:15,187 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:41:15,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:41:15,301 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:41:15,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15 WrapperNode [2020-08-22 04:41:15,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:41:15,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:41:15,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:41:15,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:41:15,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... [2020-08-22 04:41:15,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:41:15,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:41:15,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:41:15,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:41:15,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:41:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:41:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:41:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:41:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 04:41:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 04:41:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 04:41:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 04:41:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 04:41:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 04:41:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 04:41:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 04:41:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 04:41:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 04:41:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 04:41:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 04:41:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 04:41:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 04:41:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 04:41:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 04:41:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 04:41:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 04:41:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 04:41:15,452 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 04:41:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 04:41:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 04:41:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 04:41:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 04:41:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 04:41:15,453 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 04:41:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 04:41:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 04:41:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 04:41:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 04:41:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 04:41:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 04:41:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 04:41:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 04:41:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 04:41:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 04:41:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 04:41:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 04:41:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:41:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 04:41:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 04:41:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:41:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 04:41:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 04:41:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 04:41:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 04:41:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 04:41:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 04:41:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 04:41:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 04:41:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 04:41:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 04:41:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 04:41:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 04:41:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 04:41:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 04:41:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 04:41:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 04:41:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 04:41:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 04:41:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:41:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:41:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:41:16,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:41:16,153 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 04:41:16,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:41:16 BoogieIcfgContainer [2020-08-22 04:41:16,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:41:16,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:41:16,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:41:16,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:41:16,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:41:14" (1/3) ... [2020-08-22 04:41:16,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c68876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:41:16, skipping insertion in model container [2020-08-22 04:41:16,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:41:15" (2/3) ... [2020-08-22 04:41:16,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c68876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:41:16, skipping insertion in model container [2020-08-22 04:41:16,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:41:16" (3/3) ... [2020-08-22 04:41:16,166 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-22 04:41:16,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:41:16,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 04:41:16,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 04:41:16,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:41:16,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:41:16,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:41:16,220 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:41:16,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:41:16,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:41:16,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:41:16,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:41:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-22 04:41:16,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-22 04:41:16,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:16,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:16,250 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-22 04:41:16,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:16,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462906905] [2020-08-22 04:41:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:16,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462906905] [2020-08-22 04:41:16,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:16,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:16,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021040773] [2020-08-22 04:41:16,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:16,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:16,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:16,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:16,482 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-22 04:41:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:16,793 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-22 04:41:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:16,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-22 04:41:16,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:16,811 INFO L225 Difference]: With dead ends: 188 [2020-08-22 04:41:16,811 INFO L226 Difference]: Without dead ends: 100 [2020-08-22 04:41:16,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-22 04:41:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-22 04:41:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 04:41:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-22 04:41:16,900 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-22 04:41:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:16,901 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-22 04:41:16,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-22 04:41:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 04:41:16,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:16,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:16,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:41:16,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:16,904 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-22 04:41:16,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:16,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520247088] [2020-08-22 04:41:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:17,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520247088] [2020-08-22 04:41:17,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:17,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:17,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897542723] [2020-08-22 04:41:17,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:17,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:17,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:17,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:17,010 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-22 04:41:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:17,174 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-22 04:41:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:17,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-22 04:41:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:17,176 INFO L225 Difference]: With dead ends: 85 [2020-08-22 04:41:17,176 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 04:41:17,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 04:41:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-22 04:41:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 04:41:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-22 04:41:17,187 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-22 04:41:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:17,188 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-22 04:41:17,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-22 04:41:17,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 04:41:17,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:17,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:17,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:41:17,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:17,190 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-22 04:41:17,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:17,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310429396] [2020-08-22 04:41:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:17,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310429396] [2020-08-22 04:41:17,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:17,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:41:17,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207607134] [2020-08-22 04:41:17,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:41:17,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:41:17,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:17,265 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-22 04:41:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:17,529 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-22 04:41:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 04:41:17,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 04:41:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:17,532 INFO L225 Difference]: With dead ends: 140 [2020-08-22 04:41:17,532 INFO L226 Difference]: Without dead ends: 138 [2020-08-22 04:41:17,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-22 04:41:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-22 04:41:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 04:41:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-22 04:41:17,543 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-22 04:41:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:17,544 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-22 04:41:17,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:41:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-22 04:41:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 04:41:17,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:17,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:17,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:41:17,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:17,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:17,546 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-22 04:41:17,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:17,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722075108] [2020-08-22 04:41:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:17,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722075108] [2020-08-22 04:41:17,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:17,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:41:17,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752826599] [2020-08-22 04:41:17,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:41:17,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:17,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:41:17,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:17,623 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-22 04:41:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:17,798 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-22 04:41:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:41:17,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 04:41:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:17,800 INFO L225 Difference]: With dead ends: 85 [2020-08-22 04:41:17,800 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 04:41:17,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 04:41:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-22 04:41:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 04:41:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-22 04:41:17,809 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-22 04:41:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:17,809 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-22 04:41:17,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:41:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-22 04:41:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 04:41:17,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:17,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:17,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:41:17,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:17,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:17,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-22 04:41:17,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:17,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769026290] [2020-08-22 04:41:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:17,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769026290] [2020-08-22 04:41:17,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:17,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:17,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213541796] [2020-08-22 04:41:17,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:17,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:17,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:17,887 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-22 04:41:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:18,051 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-22 04:41:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:18,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 04:41:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:18,053 INFO L225 Difference]: With dead ends: 83 [2020-08-22 04:41:18,053 INFO L226 Difference]: Without dead ends: 79 [2020-08-22 04:41:18,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-22 04:41:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-22 04:41:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 04:41:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-22 04:41:18,061 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-22 04:41:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:18,061 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-22 04:41:18,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-22 04:41:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 04:41:18,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:18,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:18,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:41:18,063 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:18,063 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-22 04:41:18,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:18,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068179146] [2020-08-22 04:41:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:18,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068179146] [2020-08-22 04:41:18,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:18,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:41:18,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40671754] [2020-08-22 04:41:18,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:41:18,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:18,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:41:18,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:18,122 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-22 04:41:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:18,292 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-22 04:41:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:41:18,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-22 04:41:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:18,295 INFO L225 Difference]: With dead ends: 136 [2020-08-22 04:41:18,295 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 04:41:18,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:41:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 04:41:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-22 04:41:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 04:41:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-22 04:41:18,312 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-22 04:41:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:18,312 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-22 04:41:18,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:41:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-22 04:41:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 04:41:18,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:18,314 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:18,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:41:18,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-22 04:41:18,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:18,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683701084] [2020-08-22 04:41:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:18,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683701084] [2020-08-22 04:41:18,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:18,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:18,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226586601] [2020-08-22 04:41:18,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:18,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:18,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:18,396 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-22 04:41:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:18,529 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-22 04:41:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:18,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 04:41:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:18,530 INFO L225 Difference]: With dead ends: 141 [2020-08-22 04:41:18,531 INFO L226 Difference]: Without dead ends: 99 [2020-08-22 04:41:18,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-22 04:41:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-22 04:41:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 04:41:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-22 04:41:18,538 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-22 04:41:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:18,539 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-22 04:41:18,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:18,539 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-22 04:41:18,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 04:41:18,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:18,540 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:18,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:41:18,540 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:18,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-22 04:41:18,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:18,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177917655] [2020-08-22 04:41:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:18,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177917655] [2020-08-22 04:41:18,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:18,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:18,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561118629] [2020-08-22 04:41:18,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:18,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:18,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:18,600 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-22 04:41:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:18,731 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-22 04:41:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:18,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 04:41:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:18,732 INFO L225 Difference]: With dead ends: 78 [2020-08-22 04:41:18,732 INFO L226 Difference]: Without dead ends: 76 [2020-08-22 04:41:18,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-22 04:41:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-22 04:41:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 04:41:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-22 04:41:18,748 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-22 04:41:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:18,749 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-22 04:41:18,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-22 04:41:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 04:41:18,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:18,750 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:18,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:41:18,750 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:18,751 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-22 04:41:18,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:18,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285356253] [2020-08-22 04:41:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:18,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285356253] [2020-08-22 04:41:18,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:18,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:41:18,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517371350] [2020-08-22 04:41:18,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:41:18,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:18,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:41:18,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:18,829 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-22 04:41:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:19,021 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-22 04:41:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:41:19,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 04:41:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:19,022 INFO L225 Difference]: With dead ends: 194 [2020-08-22 04:41:19,022 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 04:41:19,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 04:41:19,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-22 04:41:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 04:41:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-22 04:41:19,038 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-22 04:41:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:19,038 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-22 04:41:19,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:41:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-22 04:41:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 04:41:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:19,040 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:19,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:41:19,040 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-22 04:41:19,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:19,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913619617] [2020-08-22 04:41:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:19,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913619617] [2020-08-22 04:41:19,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:19,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:41:19,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819871213] [2020-08-22 04:41:19,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:41:19,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:19,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:41:19,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:19,093 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-22 04:41:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:19,230 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-22 04:41:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:41:19,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 04:41:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:19,231 INFO L225 Difference]: With dead ends: 79 [2020-08-22 04:41:19,231 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 04:41:19,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 04:41:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-22 04:41:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 04:41:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-22 04:41:19,237 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-22 04:41:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:19,237 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-22 04:41:19,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:41:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-22 04:41:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 04:41:19,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:19,238 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:19,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:41:19,239 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:19,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-22 04:41:19,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:19,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298656372] [2020-08-22 04:41:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:19,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:19,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298656372] [2020-08-22 04:41:19,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:19,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:41:19,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771806566] [2020-08-22 04:41:19,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:41:19,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:41:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:19,311 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-22 04:41:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:19,681 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-22 04:41:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:41:19,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 04:41:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:19,683 INFO L225 Difference]: With dead ends: 182 [2020-08-22 04:41:19,683 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 04:41:19,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:41:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 04:41:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-22 04:41:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 04:41:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-22 04:41:19,690 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-22 04:41:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:19,690 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-22 04:41:19,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:41:19,690 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-22 04:41:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 04:41:19,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:19,692 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:19,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:41:19,692 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-22 04:41:19,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:19,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445425125] [2020-08-22 04:41:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:19,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445425125] [2020-08-22 04:41:19,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:19,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:41:19,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373998400] [2020-08-22 04:41:19,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:41:19,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:19,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:41:19,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:41:19,912 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-22 04:41:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:20,630 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-22 04:41:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:41:20,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-22 04:41:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:20,635 INFO L225 Difference]: With dead ends: 237 [2020-08-22 04:41:20,635 INFO L226 Difference]: Without dead ends: 235 [2020-08-22 04:41:20,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:41:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-22 04:41:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-22 04:41:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 04:41:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-22 04:41:20,650 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-22 04:41:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:20,652 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-22 04:41:20,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:41:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-22 04:41:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 04:41:20,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:20,656 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:20,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:41:20,657 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-22 04:41:20,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:20,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334629920] [2020-08-22 04:41:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:20,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:41:20,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334629920] [2020-08-22 04:41:20,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:20,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:41:20,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573829588] [2020-08-22 04:41:20,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:41:20,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:41:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:41:20,749 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-22 04:41:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:20,940 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-22 04:41:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 04:41:20,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 04:41:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:20,942 INFO L225 Difference]: With dead ends: 145 [2020-08-22 04:41:20,942 INFO L226 Difference]: Without dead ends: 127 [2020-08-22 04:41:20,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-22 04:41:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-22 04:41:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 04:41:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-22 04:41:20,951 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-22 04:41:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:20,951 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-22 04:41:20,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:41:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-22 04:41:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 04:41:20,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:20,953 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:20,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 04:41:20,953 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-22 04:41:20,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:20,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384408030] [2020-08-22 04:41:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:20,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:41:20,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384408030] [2020-08-22 04:41:20,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:20,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:20,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420020596] [2020-08-22 04:41:20,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:20,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:20,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:20,998 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-22 04:41:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:21,153 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-22 04:41:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:21,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-22 04:41:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:21,155 INFO L225 Difference]: With dead ends: 119 [2020-08-22 04:41:21,155 INFO L226 Difference]: Without dead ends: 117 [2020-08-22 04:41:21,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-22 04:41:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-22 04:41:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 04:41:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-22 04:41:21,163 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-22 04:41:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:21,163 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-22 04:41:21,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-22 04:41:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 04:41:21,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:21,165 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:21,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 04:41:21,165 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-22 04:41:21,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:21,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843497086] [2020-08-22 04:41:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:21,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:21,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843497086] [2020-08-22 04:41:21,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:21,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:41:21,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547554116] [2020-08-22 04:41:21,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:41:21,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:21,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:41:21,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:41:21,337 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-22 04:41:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:21,941 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-22 04:41:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:41:21,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-22 04:41:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:21,943 INFO L225 Difference]: With dead ends: 240 [2020-08-22 04:41:21,943 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 04:41:21,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:41:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 04:41:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-22 04:41:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 04:41:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-22 04:41:21,956 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-22 04:41:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:21,957 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-22 04:41:21,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:41:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-22 04:41:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 04:41:21,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:21,958 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:21,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 04:41:21,958 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:21,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:21,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-22 04:41:21,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:21,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092613949] [2020-08-22 04:41:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:22,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:22,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092613949] [2020-08-22 04:41:22,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:41:22,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 04:41:22,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416975335] [2020-08-22 04:41:22,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:41:22,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:22,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:41:22,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:22,027 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-22 04:41:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:22,285 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-22 04:41:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:41:22,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 04:41:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:22,286 INFO L225 Difference]: With dead ends: 207 [2020-08-22 04:41:22,286 INFO L226 Difference]: Without dead ends: 145 [2020-08-22 04:41:22,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:41:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-22 04:41:22,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-22 04:41:22,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 04:41:22,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-22 04:41:22,295 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-22 04:41:22,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:22,295 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-22 04:41:22,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:41:22,296 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-22 04:41:22,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 04:41:22,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:22,296 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:22,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 04:41:22,297 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-22 04:41:22,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:22,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383486704] [2020-08-22 04:41:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:22,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:22,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383486704] [2020-08-22 04:41:22,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:22,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:41:22,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325346371] [2020-08-22 04:41:22,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:41:22,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:22,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:41:22,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:41:22,373 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-22 04:41:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:22,712 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-22 04:41:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:41:22,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-22 04:41:22,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:22,714 INFO L225 Difference]: With dead ends: 198 [2020-08-22 04:41:22,714 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 04:41:22,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:41:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 04:41:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-22 04:41:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 04:41:22,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-22 04:41:22,724 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-22 04:41:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:22,725 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-22 04:41:22,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:41:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-22 04:41:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 04:41:22,726 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:22,726 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:22,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 04:41:22,726 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:22,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:22,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-22 04:41:22,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:22,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718755054] [2020-08-22 04:41:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:41:22,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718755054] [2020-08-22 04:41:22,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:22,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:41:22,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441283177] [2020-08-22 04:41:22,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:41:22,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:22,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:41:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:22,790 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-22 04:41:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:22,995 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-22 04:41:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:41:22,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 04:41:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:22,997 INFO L225 Difference]: With dead ends: 182 [2020-08-22 04:41:22,997 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 04:41:22,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:41:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 04:41:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-22 04:41:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-22 04:41:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-22 04:41:23,008 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-22 04:41:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:23,008 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-22 04:41:23,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:41:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-22 04:41:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 04:41:23,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:23,009 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:23,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 04:41:23,009 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-22 04:41:23,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:23,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032690810] [2020-08-22 04:41:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:23,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032690810] [2020-08-22 04:41:23,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:41:23,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 04:41:23,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249976163] [2020-08-22 04:41:23,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:41:23,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:41:23,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:41:23,093 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-22 04:41:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:23,420 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-22 04:41:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:41:23,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 04:41:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:23,423 INFO L225 Difference]: With dead ends: 241 [2020-08-22 04:41:23,423 INFO L226 Difference]: Without dead ends: 210 [2020-08-22 04:41:23,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:41:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-22 04:41:23,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-22 04:41:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 04:41:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-22 04:41:23,450 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-22 04:41:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:23,450 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-22 04:41:23,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:41:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-22 04:41:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 04:41:23,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:23,451 INFO L422 BasicCegarLoop]: 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] [2020-08-22 04:41:23,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 04:41:23,455 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:23,456 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-22 04:41:23,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:23,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303106644] [2020-08-22 04:41:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:23,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303106644] [2020-08-22 04:41:23,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:23,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:41:23,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4935037] [2020-08-22 04:41:23,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:41:23,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:23,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:41:23,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:23,510 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-22 04:41:23,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:23,652 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-22 04:41:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:41:23,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-22 04:41:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:23,654 INFO L225 Difference]: With dead ends: 354 [2020-08-22 04:41:23,654 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 04:41:23,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:41:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 04:41:23,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-22 04:41:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 04:41:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-22 04:41:23,668 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-22 04:41:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:23,669 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-22 04:41:23,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:41:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-22 04:41:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 04:41:23,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:23,670 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:23,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 04:41:23,670 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:23,670 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-22 04:41:23,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:23,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153266445] [2020-08-22 04:41:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:23,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153266445] [2020-08-22 04:41:23,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:41:23,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:41:23,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097995158] [2020-08-22 04:41:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:41:23,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:23,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:41:23,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:41:23,897 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-22 04:41:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:24,697 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-22 04:41:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:41:24,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-22 04:41:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:24,700 INFO L225 Difference]: With dead ends: 430 [2020-08-22 04:41:24,700 INFO L226 Difference]: Without dead ends: 338 [2020-08-22 04:41:24,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:41:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-22 04:41:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-22 04:41:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-22 04:41:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-22 04:41:24,716 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-22 04:41:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:24,716 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-22 04:41:24,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:41:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-22 04:41:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 04:41:24,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:24,718 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:24,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-22 04:41:24,718 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:24,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-22 04:41:24,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:24,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546694527] [2020-08-22 04:41:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:24,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546694527] [2020-08-22 04:41:24,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:41:24,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:41:24,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718052582] [2020-08-22 04:41:24,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:41:24,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:24,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:41:24,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:41:24,815 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-22 04:41:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:25,040 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-22 04:41:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:41:25,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-22 04:41:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:25,044 INFO L225 Difference]: With dead ends: 353 [2020-08-22 04:41:25,044 INFO L226 Difference]: Without dead ends: 244 [2020-08-22 04:41:25,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:41:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-22 04:41:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-22 04:41:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 04:41:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-22 04:41:25,061 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-22 04:41:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:25,062 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-22 04:41:25,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:41:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-22 04:41:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 04:41:25,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:25,063 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:25,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 04:41:25,063 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:25,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:25,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-22 04:41:25,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:25,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745409936] [2020-08-22 04:41:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:25,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:41:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:41:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:41:25,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745409936] [2020-08-22 04:41:25,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:41:25,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:41:25,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12317996] [2020-08-22 04:41:25,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:41:25,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:41:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:41:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:41:25,333 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-22 04:41:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:41:25,984 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-22 04:41:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 04:41:25,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-22 04:41:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:41:25,987 INFO L225 Difference]: With dead ends: 441 [2020-08-22 04:41:25,987 INFO L226 Difference]: Without dead ends: 349 [2020-08-22 04:41:25,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:41:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-22 04:41:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-22 04:41:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 04:41:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-22 04:41:26,003 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-22 04:41:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:41:26,004 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-22 04:41:26,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:41:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-22 04:41:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 04:41:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:41:26,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:41:26,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-22 04:41:26,005 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:41:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:41:26,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-22 04:41:26,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:41:26,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339882163] [2020-08-22 04:41:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:41:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:41:26,031 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:41:26,031 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:41:26,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-22 04:41:26,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:41:26 BoogieIcfgContainer [2020-08-22 04:41:26,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:41:26,086 INFO L168 Benchmark]: Toolchain (without parser) took 11459.92 ms. Allocated memory was 140.0 MB in the beginning and 334.5 MB in the end (delta: 194.5 MB). Free memory was 101.5 MB in the beginning and 120.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 175.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:41:26,086 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 04:41:26,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.23 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 168.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:41:26,088 INFO L168 Benchmark]: Boogie Preprocessor took 74.13 ms. Allocated memory is still 202.9 MB. Free memory was 168.8 MB in the beginning and 165.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:41:26,088 INFO L168 Benchmark]: RCFGBuilder took 779.77 ms. Allocated memory is still 202.9 MB. Free memory was 165.5 MB in the beginning and 109.5 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:41:26,094 INFO L168 Benchmark]: TraceAbstraction took 9923.66 ms. Allocated memory was 202.9 MB in the beginning and 334.5 MB in the end (delta: 131.6 MB). Free memory was 109.5 MB in the beginning and 120.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:41:26,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.23 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 168.8 MB in the end (delta: -67.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.13 ms. Allocated memory is still 202.9 MB. Free memory was 168.8 MB in the beginning and 165.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 779.77 ms. Allocated memory is still 202.9 MB. Free memory was 165.5 MB in the beginning and 109.5 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9923.66 ms. Allocated memory was 202.9 MB in the beginning and 334.5 MB in the end (delta: 131.6 MB). Free memory was 109.5 MB in the beginning and 120.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 120.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.8s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1788 SDtfs, 2214 SDslu, 3432 SDs, 0 SdLazy, 4020 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...