/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -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 0.1.25-5644d1e-m [2020-08-18 18:43:10,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:43:10,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:43:10,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:43:10,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:43:10,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:43:10,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:43:10,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:43:10,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:43:10,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:43:10,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:43:10,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:43:10,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:43:10,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:43:10,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:43:10,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:43:10,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:43:10,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:43:10,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:43:10,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:43:10,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:43:10,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:43:10,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:43:10,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:43:10,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:43:10,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:43:10,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:43:10,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:43:10,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:43:10,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:43:10,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:43:10,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:43:10,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:43:10,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:43:10,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:43:10,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:43:10,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:43:10,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:43:10,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:43:10,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:43:10,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:43:10,655 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 [2020-08-18 18:43:10,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:43:10,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:43:10,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:43:10,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:43:10,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:43:10,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:43:10,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:43:10,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:43:10,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:43:10,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:43:10,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:43:10,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:43:10,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:43:10,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:43:10,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:43:10,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:43:10,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:43:10,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:43:10,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:43:10,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:43:10,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:43:10,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:43:10,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:43:10,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:43:10,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:43:10,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:43:10,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:43:10,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:43:10,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:43:10,684 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=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:43:10,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:43:10,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:43:10,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:43:11,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:43:11,002 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:43:11,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 18:43:11,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/443019b44/df713b85743d42f0aec782d767975ab4/FLAG1eb3c583e [2020-08-18 18:43:11,658 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:43:11,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 18:43:11,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/443019b44/df713b85743d42f0aec782d767975ab4/FLAG1eb3c583e [2020-08-18 18:43:11,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/443019b44/df713b85743d42f0aec782d767975ab4 [2020-08-18 18:43:11,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:43:11,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:43:11,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:43:11,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:43:11,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:43:11,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:43:11" (1/1) ... [2020-08-18 18:43:11,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21715d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:11, skipping insertion in model container [2020-08-18 18:43:11,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:43:11" (1/1) ... [2020-08-18 18:43:11,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:43:12,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:43:12,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:43:12,569 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:43:12,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:43:12,677 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:43:12,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12 WrapperNode [2020-08-18 18:43:12,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:43:12,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:43:12,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:43:12,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:43:12,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (1/1) ... [2020-08-18 18:43:12,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:43:12,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:43:12,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:43:12,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:43:12,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (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 [2020-08-18 18:43:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:43:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:43:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:43:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 18:43:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 18:43:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 18:43:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 18:43:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 18:43:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 18:43:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 18:43:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 18:43:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 18:43:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 18:43:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 18:43:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 18:43:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 18:43:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 18:43:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 18:43:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 18:43:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 18:43:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 18:43:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 18:43:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 18:43:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 18:43:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 18:43:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 18:43:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 18:43:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 18:43:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 18:43:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 18:43:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 18:43:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 18:43:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 18:43:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 18:43:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 18:43:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 18:43:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 18:43:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 18:43:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 18:43:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 18:43:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 18:43:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 18:43:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 18:43:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 18:43:12,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 18:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 18:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 18:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 18:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 18:43:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:43:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 18:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 18:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 18:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 18:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 18:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 18:43:12,831 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 18:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 18:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 18:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 18:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 18:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 18:43:12,832 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 18:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 18:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 18:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 18:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 18:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 18:43:12,833 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 18:43:12,834 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 18:43:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 18:43:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:43:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:43:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:43:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:43:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:43:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:43:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:43:13,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:43:13,526 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 18:43:13,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:43:13 BoogieIcfgContainer [2020-08-18 18:43:13,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:43:13,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:43:13,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:43:13,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:43:13,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:43:11" (1/3) ... [2020-08-18 18:43:13,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b009bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:43:13, skipping insertion in model container [2020-08-18 18:43:13,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:43:12" (2/3) ... [2020-08-18 18:43:13,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b009bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:43:13, skipping insertion in model container [2020-08-18 18:43:13,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:43:13" (3/3) ... [2020-08-18 18:43:13,555 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 18:43:13,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:43:13,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 18:43:13,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 18:43:13,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:43:13,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:43:13,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:43:13,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:43:13,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:43:13,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:43:13,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:43:13,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:43:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 18:43:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 18:43:13,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:13,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:43:13,665 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]=== [2020-08-18 18:43:13,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 18:43:13,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:13,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712943581] [2020-08-18 18:43:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:13,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:13,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712943581] [2020-08-18 18:43:13,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:13,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:13,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824749835] [2020-08-18 18:43:13,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:13,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:13,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:13,943 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 18:43:14,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:14,228 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 18:43:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:14,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 18:43:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:14,242 INFO L225 Difference]: With dead ends: 188 [2020-08-18 18:43:14,242 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 18:43:14,247 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 [2020-08-18 18:43:14,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 18:43:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 18:43:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 18:43:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 18:43:14,300 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 18:43:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:14,301 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 18:43:14,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 18:43:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 18:43:14,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:14,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:43:14,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:43:14,303 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]=== [2020-08-18 18:43:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:14,304 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 18:43:14,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:14,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178280215] [2020-08-18 18:43:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:14,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:14,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178280215] [2020-08-18 18:43:14,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:14,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:14,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025861549] [2020-08-18 18:43:14,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:14,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:14,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:14,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:14,435 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 18:43:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:14,619 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 18:43:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:14,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 18:43:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:14,621 INFO L225 Difference]: With dead ends: 85 [2020-08-18 18:43:14,621 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 18:43:14,622 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 [2020-08-18 18:43:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 18:43:14,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 18:43:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 18:43:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 18:43:14,634 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 18:43:14,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:14,634 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 18:43:14,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 18:43:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 18:43:14,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:14,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:43:14,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:43:14,636 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]=== [2020-08-18 18:43:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:14,637 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 18:43:14,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:14,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696832469] [2020-08-18 18:43:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:14,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696832469] [2020-08-18 18:43:14,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:14,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:43:14,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242804230] [2020-08-18 18:43:14,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:43:14,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:14,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:43:14,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:43:14,714 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 18:43:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:14,945 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 18:43:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:43:14,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 18:43:14,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:14,948 INFO L225 Difference]: With dead ends: 140 [2020-08-18 18:43:14,948 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 18:43:14,949 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 [2020-08-18 18:43:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 18:43:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 18:43:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 18:43:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 18:43:14,960 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 18:43:14,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:14,960 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 18:43:14,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:43:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 18:43:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 18:43:14,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:14,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:43:14,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:43:14,962 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]=== [2020-08-18 18:43:14,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:14,963 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 18:43:14,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:14,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166439759] [2020-08-18 18:43:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:15,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166439759] [2020-08-18 18:43:15,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:15,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:43:15,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606624002] [2020-08-18 18:43:15,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:43:15,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:15,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:43:15,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:43:15,066 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 18:43:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:15,268 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 18:43:15,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:43:15,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 18:43:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:15,270 INFO L225 Difference]: With dead ends: 85 [2020-08-18 18:43:15,271 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 18:43:15,271 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 [2020-08-18 18:43:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 18:43:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 18:43:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 18:43:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 18:43:15,289 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 18:43:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:15,292 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 18:43:15,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:43:15,293 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 18:43:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 18:43:15,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:15,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:43:15,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:43:15,295 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]=== [2020-08-18 18:43:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 18:43:15,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:15,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526391161] [2020-08-18 18:43:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:15,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526391161] [2020-08-18 18:43:15,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:15,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:15,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711542402] [2020-08-18 18:43:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:15,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:15,410 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 18:43:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:15,553 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 18:43:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:15,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 18:43:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:15,555 INFO L225 Difference]: With dead ends: 83 [2020-08-18 18:43:15,556 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 18:43:15,557 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 [2020-08-18 18:43:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 18:43:15,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 18:43:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 18:43:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 18:43:15,570 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 18:43:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:15,570 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 18:43:15,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 18:43:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 18:43:15,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:15,571 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] [2020-08-18 18:43:15,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:43:15,572 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]=== [2020-08-18 18:43:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:15,572 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 18:43:15,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:15,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089848601] [2020-08-18 18:43:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:15,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089848601] [2020-08-18 18:43:15,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:15,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:43:15,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778103439] [2020-08-18 18:43:15,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:43:15,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:15,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:43:15,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:43:15,692 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 18:43:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:15,886 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 18:43:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:43:15,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 18:43:15,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:15,889 INFO L225 Difference]: With dead ends: 136 [2020-08-18 18:43:15,889 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 18:43:15,890 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 [2020-08-18 18:43:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 18:43:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 18:43:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 18:43:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 18:43:15,905 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 18:43:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:15,906 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 18:43:15,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:43:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 18:43:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 18:43:15,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:15,908 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] [2020-08-18 18:43:15,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:43:15,908 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]=== [2020-08-18 18:43:15,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:15,909 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 18:43:15,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:15,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181332742] [2020-08-18 18:43:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:15,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181332742] [2020-08-18 18:43:15,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:15,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:15,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946387929] [2020-08-18 18:43:15,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:15,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:15,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:15,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:15,976 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 18:43:16,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:16,099 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 18:43:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:16,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 18:43:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:16,100 INFO L225 Difference]: With dead ends: 141 [2020-08-18 18:43:16,101 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 18:43:16,101 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 [2020-08-18 18:43:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 18:43:16,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 18:43:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 18:43:16,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 18:43:16,108 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 18:43:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:16,109 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 18:43:16,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 18:43:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 18:43:16,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:16,110 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] [2020-08-18 18:43:16,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:43:16,110 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]=== [2020-08-18 18:43:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:16,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 18:43:16,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:16,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102290865] [2020-08-18 18:43:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:16,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102290865] [2020-08-18 18:43:16,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:16,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:16,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720423288] [2020-08-18 18:43:16,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:16,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:16,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:16,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:16,155 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 18:43:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:16,285 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 18:43:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:16,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 18:43:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:16,287 INFO L225 Difference]: With dead ends: 78 [2020-08-18 18:43:16,287 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 18:43:16,287 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 [2020-08-18 18:43:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 18:43:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 18:43:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 18:43:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 18:43:16,293 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 18:43:16,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:16,294 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 18:43:16,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:16,294 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 18:43:16,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 18:43:16,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:16,295 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] [2020-08-18 18:43:16,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:43:16,295 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]=== [2020-08-18 18:43:16,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:16,296 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 18:43:16,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:16,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15363936] [2020-08-18 18:43:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:16,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15363936] [2020-08-18 18:43:16,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:16,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:43:16,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776390436] [2020-08-18 18:43:16,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:43:16,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:43:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:43:16,389 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 18:43:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:16,567 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 18:43:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:43:16,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 18:43:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:16,569 INFO L225 Difference]: With dead ends: 194 [2020-08-18 18:43:16,569 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 18:43:16,570 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 [2020-08-18 18:43:16,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 18:43:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 18:43:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 18:43:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 18:43:16,577 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 18:43:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:16,577 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 18:43:16,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:43:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 18:43:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 18:43:16,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:16,579 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] [2020-08-18 18:43:16,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:43:16,579 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]=== [2020-08-18 18:43:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 18:43:16,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:16,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029255259] [2020-08-18 18:43:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:16,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029255259] [2020-08-18 18:43:16,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:16,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:43:16,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362036917] [2020-08-18 18:43:16,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:43:16,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:16,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:43:16,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:43:16,637 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 18:43:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:16,784 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 18:43:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:43:16,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 18:43:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:16,786 INFO L225 Difference]: With dead ends: 79 [2020-08-18 18:43:16,786 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 18:43:16,786 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 [2020-08-18 18:43:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 18:43:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 18:43:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 18:43:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 18:43:16,791 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 18:43:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:16,791 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 18:43:16,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:43:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 18:43:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 18:43:16,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:16,792 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] [2020-08-18 18:43:16,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:43:16,793 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]=== [2020-08-18 18:43:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:16,793 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 18:43:16,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:16,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727271975] [2020-08-18 18:43:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:16,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727271975] [2020-08-18 18:43:16,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:16,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:43:16,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049447337] [2020-08-18 18:43:16,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:43:16,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:16,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:43:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:43:16,863 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 18:43:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:17,225 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 18:43:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:43:17,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 18:43:17,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:17,227 INFO L225 Difference]: With dead ends: 182 [2020-08-18 18:43:17,227 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 18:43:17,228 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 [2020-08-18 18:43:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 18:43:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 18:43:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 18:43:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 18:43:17,235 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 18:43:17,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:17,235 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 18:43:17,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:43:17,236 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 18:43:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 18:43:17,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:17,237 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] [2020-08-18 18:43:17,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:43:17,238 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]=== [2020-08-18 18:43:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 18:43:17,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:17,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055838313] [2020-08-18 18:43:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:17,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:17,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055838313] [2020-08-18 18:43:17,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:17,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:43:17,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27851560] [2020-08-18 18:43:17,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:43:17,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:43:17,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:43:17,517 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 18:43:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:18,253 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 18:43:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:43:18,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 18:43:18,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:18,258 INFO L225 Difference]: With dead ends: 237 [2020-08-18 18:43:18,258 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 18:43:18,260 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 [2020-08-18 18:43:18,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 18:43:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 18:43:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 18:43:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 18:43:18,277 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 18:43:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:18,280 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 18:43:18,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:43:18,280 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 18:43:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 18:43:18,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:18,284 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] [2020-08-18 18:43:18,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:43:18,284 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]=== [2020-08-18 18:43:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 18:43:18,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:18,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955301197] [2020-08-18 18:43:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:43:18,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955301197] [2020-08-18 18:43:18,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:18,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:43:18,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058972211] [2020-08-18 18:43:18,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:43:18,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:43:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:43:18,369 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 18:43:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:18,600 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 18:43:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:43:18,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 18:43:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:18,603 INFO L225 Difference]: With dead ends: 145 [2020-08-18 18:43:18,603 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 18:43:18,604 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 [2020-08-18 18:43:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 18:43:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 18:43:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 18:43:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 18:43:18,634 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 18:43:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:18,634 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 18:43:18,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:43:18,635 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 18:43:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 18:43:18,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:18,641 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] [2020-08-18 18:43:18,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 18:43:18,641 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]=== [2020-08-18 18:43:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 18:43:18,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:18,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672442668] [2020-08-18 18:43:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:18,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:43:18,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672442668] [2020-08-18 18:43:18,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:18,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:18,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843247544] [2020-08-18 18:43:18,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:18,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:18,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:18,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:18,697 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 18:43:18,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:18,840 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 18:43:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:18,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 18:43:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:18,842 INFO L225 Difference]: With dead ends: 119 [2020-08-18 18:43:18,842 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 18:43:18,842 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 [2020-08-18 18:43:18,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 18:43:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 18:43:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 18:43:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 18:43:18,854 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 18:43:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:18,854 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 18:43:18,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 18:43:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 18:43:18,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:18,856 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] [2020-08-18 18:43:18,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 18:43:18,856 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]=== [2020-08-18 18:43:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:18,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 18:43:18,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:18,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490504528] [2020-08-18 18:43:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:19,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490504528] [2020-08-18 18:43:19,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:19,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:43:19,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899608173] [2020-08-18 18:43:19,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:43:19,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:19,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:43:19,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:43:19,057 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 18:43:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:19,696 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 18:43:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:43:19,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 18:43:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:19,699 INFO L225 Difference]: With dead ends: 240 [2020-08-18 18:43:19,699 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 18:43:19,700 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 [2020-08-18 18:43:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 18:43:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 18:43:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 18:43:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 18:43:19,709 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 18:43:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:19,709 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 18:43:19,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:43:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 18:43:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 18:43:19,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:19,711 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] [2020-08-18 18:43:19,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 18:43:19,711 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]=== [2020-08-18 18:43:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:19,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 18:43:19,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:19,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165928009] [2020-08-18 18:43:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:19,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165928009] [2020-08-18 18:43:19,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:43:19,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 18:43:19,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589641276] [2020-08-18 18:43:19,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:43:19,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:43:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:43:19,814 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 18:43:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:20,097 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 18:43:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:43:20,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 18:43:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:20,099 INFO L225 Difference]: With dead ends: 207 [2020-08-18 18:43:20,099 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 18:43:20,100 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 [2020-08-18 18:43:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 18:43:20,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 18:43:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 18:43:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 18:43:20,112 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 18:43:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:20,112 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 18:43:20,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:43:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 18:43:20,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 18:43:20,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:20,113 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] [2020-08-18 18:43:20,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 18:43:20,114 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]=== [2020-08-18 18:43:20,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:20,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 18:43:20,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:20,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83677350] [2020-08-18 18:43:20,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:20,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83677350] [2020-08-18 18:43:20,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:20,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:43:20,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70321600] [2020-08-18 18:43:20,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:43:20,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:43:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:43:20,194 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 18:43:20,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:20,542 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 18:43:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:43:20,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 18:43:20,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:20,544 INFO L225 Difference]: With dead ends: 198 [2020-08-18 18:43:20,544 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 18:43:20,545 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 [2020-08-18 18:43:20,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 18:43:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 18:43:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 18:43:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 18:43:20,558 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 18:43:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:20,558 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 18:43:20,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:43:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 18:43:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 18:43:20,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:20,560 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] [2020-08-18 18:43:20,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 18:43:20,561 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]=== [2020-08-18 18:43:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 18:43:20,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:20,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213617514] [2020-08-18 18:43:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:43:20,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213617514] [2020-08-18 18:43:20,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:20,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:43:20,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021198513] [2020-08-18 18:43:20,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:43:20,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:43:20,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:43:20,648 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 18:43:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:20,871 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 18:43:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:43:20,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 18:43:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:20,873 INFO L225 Difference]: With dead ends: 182 [2020-08-18 18:43:20,873 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 18:43:20,873 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 [2020-08-18 18:43:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 18:43:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 18:43:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 18:43:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 18:43:20,887 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 18:43:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:20,887 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 18:43:20,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:43:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 18:43:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 18:43:20,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:20,888 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] [2020-08-18 18:43:20,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 18:43:20,889 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]=== [2020-08-18 18:43:20,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:20,889 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 18:43:20,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:20,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540758863] [2020-08-18 18:43:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:20,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:20,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540758863] [2020-08-18 18:43:20,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:43:20,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 18:43:20,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58638317] [2020-08-18 18:43:20,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:43:20,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:43:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:43:20,988 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 18:43:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:21,317 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 18:43:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:43:21,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 18:43:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:21,319 INFO L225 Difference]: With dead ends: 241 [2020-08-18 18:43:21,320 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 18:43:21,320 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 [2020-08-18 18:43:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 18:43:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 18:43:21,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 18:43:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 18:43:21,332 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 18:43:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:21,332 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 18:43:21,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:43:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 18:43:21,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 18:43:21,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:21,333 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] [2020-08-18 18:43:21,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 18:43:21,334 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]=== [2020-08-18 18:43:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:21,334 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 18:43:21,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:21,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143699269] [2020-08-18 18:43:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:21,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143699269] [2020-08-18 18:43:21,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:21,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:43:21,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677057075] [2020-08-18 18:43:21,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:43:21,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:21,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:43:21,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:43:21,368 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 18:43:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:21,599 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 18:43:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:43:21,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 18:43:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:21,602 INFO L225 Difference]: With dead ends: 354 [2020-08-18 18:43:21,602 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 18:43:21,603 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 [2020-08-18 18:43:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 18:43:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 18:43:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 18:43:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 18:43:21,625 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 18:43:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:21,625 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 18:43:21,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:43:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 18:43:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 18:43:21,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:21,626 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] [2020-08-18 18:43:21,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 18:43:21,627 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]=== [2020-08-18 18:43:21,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:21,627 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 18:43:21,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:21,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238833951] [2020-08-18 18:43:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:21,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:21,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238833951] [2020-08-18 18:43:21,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:43:21,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:43:21,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485501381] [2020-08-18 18:43:21,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:43:21,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:21,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:43:21,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:43:21,885 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 18:43:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:22,636 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 18:43:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:43:22,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 18:43:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:22,639 INFO L225 Difference]: With dead ends: 430 [2020-08-18 18:43:22,639 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 18:43:22,640 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 [2020-08-18 18:43:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 18:43:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 18:43:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 18:43:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 18:43:22,655 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 18:43:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:22,655 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 18:43:22,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:43:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 18:43:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 18:43:22,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:22,657 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] [2020-08-18 18:43:22,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 18:43:22,657 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]=== [2020-08-18 18:43:22,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:22,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 18:43:22,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:22,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358232126] [2020-08-18 18:43:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:22,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358232126] [2020-08-18 18:43:22,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:43:22,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:43:22,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386710272] [2020-08-18 18:43:22,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:43:22,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:43:22,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:43:22,706 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 18:43:22,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:22,920 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 18:43:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:43:22,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 18:43:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:22,925 INFO L225 Difference]: With dead ends: 353 [2020-08-18 18:43:22,925 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 18:43:22,926 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 [2020-08-18 18:43:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 18:43:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 18:43:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 18:43:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 18:43:22,944 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 18:43:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:22,944 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 18:43:22,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:43:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 18:43:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 18:43:22,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:22,945 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] [2020-08-18 18:43:22,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 18:43:22,946 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]=== [2020-08-18 18:43:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 18:43:22,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:22,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280284110] [2020-08-18 18:43:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:43:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:43:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:43:23,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280284110] [2020-08-18 18:43:23,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:43:23,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:43:23,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107659467] [2020-08-18 18:43:23,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:43:23,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:43:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:43:23,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:43:23,172 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 18:43:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:43:23,860 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 18:43:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 18:43:23,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 18:43:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:43:23,863 INFO L225 Difference]: With dead ends: 441 [2020-08-18 18:43:23,863 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 18:43:23,864 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 [2020-08-18 18:43:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 18:43:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 18:43:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 18:43:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 18:43:23,886 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 18:43:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:43:23,886 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 18:43:23,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 18:43:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 18:43:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 18:43:23,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:43:23,887 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] [2020-08-18 18:43:23,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 18:43:23,888 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]=== [2020-08-18 18:43:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:43:23,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 18:43:23,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:43:23,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25856698] [2020-08-18 18:43:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:43:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:43:23,924 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:43:23,924 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:43:23,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 18:43:23,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:43:23 BoogieIcfgContainer [2020-08-18 18:43:23,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:43:23,969 INFO L168 Benchmark]: Toolchain (without parser) took 12011.21 ms. Allocated memory was 139.5 MB in the beginning and 321.9 MB in the end (delta: 182.5 MB). Free memory was 101.4 MB in the beginning and 259.1 MB in the end (delta: -157.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:43:23,970 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:43:23,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.22 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.2 MB in the beginning and 171.3 MB in the end (delta: -70.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:43:23,971 INFO L168 Benchmark]: Boogie Preprocessor took 74.88 ms. Allocated memory is still 205.0 MB. Free memory was 171.3 MB in the beginning and 167.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:43:23,971 INFO L168 Benchmark]: RCFGBuilder took 784.19 ms. Allocated memory is still 205.0 MB. Free memory was 167.8 MB in the beginning and 111.9 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:43:23,972 INFO L168 Benchmark]: TraceAbstraction took 10424.51 ms. Allocated memory was 205.0 MB in the beginning and 321.9 MB in the end (delta: 116.9 MB). Free memory was 111.9 MB in the beginning and 259.1 MB in the end (delta: -147.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:43:23,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.22 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.2 MB in the beginning and 171.3 MB in the end (delta: -70.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.88 ms. Allocated memory is still 205.0 MB. Free memory was 171.3 MB in the beginning and 167.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 784.19 ms. Allocated memory is still 205.0 MB. Free memory was 167.8 MB in the beginning and 111.9 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10424.51 ms. Allocated memory was 205.0 MB in the beginning and 321.9 MB in the end (delta: 116.9 MB). Free memory was 111.9 MB in the beginning and 259.1 MB in the end (delta: -147.3 MB). There was no memory consumed. 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: 10.3s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 7.1s, 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, 2.1s 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, 0.3s SatisfiabilityAnalysisTime, 1.9s 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...