/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=WIDEST -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 22:44:59,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:44:59,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:44:59,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:44:59,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:44:59,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:44:59,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:44:59,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:44:59,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:44:59,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:44:59,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:44:59,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:44:59,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:44:59,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:44:59,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:44:59,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:44:59,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:44:59,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:44:59,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:44:59,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:44:59,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:44:59,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:44:59,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:44:59,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:44:59,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:44:59,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:44:59,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:44:59,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:44:59,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:44:59,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:44:59,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:44:59,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:44:59,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:44:59,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:44:59,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:44:59,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:44:59,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:44:59,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:44:59,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:44:59,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:44:59,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:44:59,559 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 22:44:59,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:44:59,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:44:59,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:44:59,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:44:59,609 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:44:59,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:44:59,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:44:59,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:44:59,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:44:59,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:44:59,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:44:59,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:44:59,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:44:59,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:44:59,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:44:59,612 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:44:59,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:44:59,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:44:59,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:44:59,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:44:59,613 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:44:59,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:44:59,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:44:59,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:44:59,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:44:59,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:44:59,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:44:59,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:44:59,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:44:59,615 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:44:59,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:44:59,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:44:59,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:44:59,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:44:59,925 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:44:59,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 22:45:00,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d545c5fb2/cc49cd92e3654b3e96d33d4fadef6295/FLAG98f7aae86 [2020-08-18 22:45:00,507 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:45:00,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 22:45:00,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d545c5fb2/cc49cd92e3654b3e96d33d4fadef6295/FLAG98f7aae86 [2020-08-18 22:45:00,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d545c5fb2/cc49cd92e3654b3e96d33d4fadef6295 [2020-08-18 22:45:00,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:45:00,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:45:00,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:45:00,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:45:00,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:45:00,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:45:00" (1/1) ... [2020-08-18 22:45:00,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:00, skipping insertion in model container [2020-08-18 22:45:00,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:45:00" (1/1) ... [2020-08-18 22:45:00,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:45:00,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:45:01,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:45:01,399 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:45:01,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:45:01,522 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:45:01,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01 WrapperNode [2020-08-18 22:45:01,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:45:01,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:45:01,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:45:01,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:45:01,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (1/1) ... [2020-08-18 22:45:01,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:45:01,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:45:01,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:45:01,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:45:01,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (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 22:45:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:45:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:45:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:45:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 22:45:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 22:45:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 22:45:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 22:45:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 22:45:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 22:45:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 22:45:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 22:45:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 22:45:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 22:45:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 22:45:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 22:45:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 22:45:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 22:45:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 22:45:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 22:45:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 22:45:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 22:45:01,665 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 22:45:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 22:45:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 22:45:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 22:45:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 22:45:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 22:45:01,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 22:45:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 22:45:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 22:45:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 22:45:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 22:45:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 22:45:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 22:45:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 22:45:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 22:45:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 22:45:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 22:45:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 22:45:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 22:45:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 22:45:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 22:45:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 22:45:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 22:45:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 22:45:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 22:45:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 22:45:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:45:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 22:45:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 22:45:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:45:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 22:45:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 22:45:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 22:45:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 22:45:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 22:45:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 22:45:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 22:45:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 22:45:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 22:45:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 22:45:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 22:45:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 22:45:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 22:45:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 22:45:01,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 22:45:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 22:45:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 22:45:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 22:45:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 22:45:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 22:45:01,675 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 22:45:01,676 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 22:45:01,677 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 22:45:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 22:45:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 22:45:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 22:45:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 22:45:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 22:45:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:45:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:45:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:45:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:45:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:45:01,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:45:02,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:45:02,369 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 22:45:02,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:45:02 BoogieIcfgContainer [2020-08-18 22:45:02,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:45:02,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:45:02,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:45:02,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:45:02,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:45:00" (1/3) ... [2020-08-18 22:45:02,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a90f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:45:02, skipping insertion in model container [2020-08-18 22:45:02,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:45:01" (2/3) ... [2020-08-18 22:45:02,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a90f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:45:02, skipping insertion in model container [2020-08-18 22:45:02,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:45:02" (3/3) ... [2020-08-18 22:45:02,384 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 22:45:02,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:45:02,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 22:45:02,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 22:45:02,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:45:02,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:45:02,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:45:02,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:45:02,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:45:02,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:45:02,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:45:02,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:45:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 22:45:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 22:45:02,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:02,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:45:02,484 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 22:45:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 22:45:02,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:02,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026238581] [2020-08-18 22:45:02,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:02,733 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 22:45:02,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026238581] [2020-08-18 22:45:02,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:02,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:02,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029229212] [2020-08-18 22:45:02,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:02,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:02,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:02,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:02,761 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 22:45:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:03,093 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 22:45:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:03,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 22:45:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:03,107 INFO L225 Difference]: With dead ends: 188 [2020-08-18 22:45:03,107 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 22:45:03,112 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 22:45:03,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 22:45:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 22:45:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 22:45:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 22:45:03,166 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 22:45:03,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:03,166 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 22:45:03,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 22:45:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 22:45:03,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:03,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:45:03,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:45:03,168 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 22:45:03,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:03,169 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 22:45:03,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:03,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327740017] [2020-08-18 22:45:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:03,230 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 22:45:03,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327740017] [2020-08-18 22:45:03,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:03,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:03,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991972577] [2020-08-18 22:45:03,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:03,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:03,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:03,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:03,235 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 22:45:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:03,453 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 22:45:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:03,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 22:45:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:03,456 INFO L225 Difference]: With dead ends: 85 [2020-08-18 22:45:03,456 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 22:45:03,459 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 22:45:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 22:45:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 22:45:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 22:45:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 22:45:03,485 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 22:45:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:03,486 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 22:45:03,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 22:45:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 22:45:03,487 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:03,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:45:03,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:45:03,488 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 22:45:03,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:03,488 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 22:45:03,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:03,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756708978] [2020-08-18 22:45:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:03,610 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 22:45:03,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756708978] [2020-08-18 22:45:03,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:03,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:45:03,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088173826] [2020-08-18 22:45:03,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:45:03,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:03,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:45:03,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:45:03,613 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 22:45:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:03,893 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 22:45:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:45:03,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 22:45:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:03,896 INFO L225 Difference]: With dead ends: 140 [2020-08-18 22:45:03,896 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 22:45:03,897 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 22:45:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 22:45:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 22:45:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 22:45:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 22:45:03,916 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 22:45:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:03,918 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 22:45:03,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:45:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 22:45:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 22:45:03,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:03,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:45:03,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:45:03,923 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 22:45:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 22:45:03,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:03,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068140186] [2020-08-18 22:45:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,050 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 22:45:04,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068140186] [2020-08-18 22:45:04,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:04,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:45:04,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925551005] [2020-08-18 22:45:04,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:45:04,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:04,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:45:04,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:45:04,053 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 22:45:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:04,248 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 22:45:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:45:04,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 22:45:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:04,250 INFO L225 Difference]: With dead ends: 85 [2020-08-18 22:45:04,250 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 22:45:04,251 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 22:45:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 22:45:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 22:45:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 22:45:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 22:45:04,277 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 22:45:04,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:04,277 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 22:45:04,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:45:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 22:45:04,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 22:45:04,278 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:04,279 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 22:45:04,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:45:04,280 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 22:45:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:04,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 22:45:04,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:04,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716616665] [2020-08-18 22:45:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,331 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 22:45:04,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716616665] [2020-08-18 22:45:04,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:04,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:04,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797226674] [2020-08-18 22:45:04,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:04,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:04,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:04,334 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 22:45:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:04,556 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 22:45:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:04,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 22:45:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:04,558 INFO L225 Difference]: With dead ends: 83 [2020-08-18 22:45:04,558 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 22:45:04,558 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 22:45:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 22:45:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 22:45:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 22:45:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 22:45:04,572 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 22:45:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:04,572 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 22:45:04,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 22:45:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 22:45:04,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:04,573 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 22:45:04,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:45:04,574 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 22:45:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 22:45:04,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:04,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959953066] [2020-08-18 22:45:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,643 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 22:45:04,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959953066] [2020-08-18 22:45:04,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:04,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:45:04,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933733001] [2020-08-18 22:45:04,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:45:04,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:45:04,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:45:04,646 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 22:45:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:04,837 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 22:45:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:45:04,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 22:45:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:04,839 INFO L225 Difference]: With dead ends: 136 [2020-08-18 22:45:04,839 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 22:45:04,840 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 22:45:04,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 22:45:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 22:45:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 22:45:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 22:45:04,847 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 22:45:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:04,848 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 22:45:04,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:45:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 22:45:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:45:04,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:04,849 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 22:45:04,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:45:04,850 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 22:45:04,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:04,850 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 22:45:04,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:04,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002023470] [2020-08-18 22:45:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:04,896 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 22:45:04,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002023470] [2020-08-18 22:45:04,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:04,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:04,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066415709] [2020-08-18 22:45:04,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:04,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:04,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:04,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:04,898 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 22:45:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:05,037 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 22:45:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:05,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 22:45:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:05,039 INFO L225 Difference]: With dead ends: 141 [2020-08-18 22:45:05,039 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 22:45:05,039 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 22:45:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 22:45:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 22:45:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 22:45:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 22:45:05,046 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 22:45:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:05,046 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 22:45:05,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 22:45:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:45:05,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:05,048 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 22:45:05,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:45:05,048 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 22:45:05,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:05,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 22:45:05,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:05,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253502741] [2020-08-18 22:45:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,093 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 22:45:05,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253502741] [2020-08-18 22:45:05,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:05,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:05,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393856061] [2020-08-18 22:45:05,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:05,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:05,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:05,095 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 22:45:05,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:05,221 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 22:45:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:05,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 22:45:05,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:05,223 INFO L225 Difference]: With dead ends: 78 [2020-08-18 22:45:05,223 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 22:45:05,224 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 22:45:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 22:45:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 22:45:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 22:45:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 22:45:05,230 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 22:45:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:05,230 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 22:45:05,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 22:45:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 22:45:05,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:05,232 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 22:45:05,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:45:05,232 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 22:45:05,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:05,233 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 22:45:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:05,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145454219] [2020-08-18 22:45:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,302 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 22:45:05,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145454219] [2020-08-18 22:45:05,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:05,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:45:05,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650689915] [2020-08-18 22:45:05,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:45:05,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:45:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:45:05,304 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 22:45:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:05,580 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 22:45:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:45:05,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 22:45:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:05,582 INFO L225 Difference]: With dead ends: 194 [2020-08-18 22:45:05,582 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 22:45:05,583 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 22:45:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 22:45:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 22:45:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 22:45:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 22:45:05,589 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 22:45:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:05,589 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 22:45:05,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:45:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 22:45:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 22:45:05,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:05,590 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 22:45:05,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:45:05,591 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 22:45:05,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 22:45:05,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:05,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922246029] [2020-08-18 22:45:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,650 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 22:45:05,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922246029] [2020-08-18 22:45:05,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:05,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:45:05,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423021350] [2020-08-18 22:45:05,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:45:05,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:45:05,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:45:05,653 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 22:45:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:05,802 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 22:45:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:45:05,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 22:45:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:05,804 INFO L225 Difference]: With dead ends: 79 [2020-08-18 22:45:05,805 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 22:45:05,805 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 22:45:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 22:45:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 22:45:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 22:45:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 22:45:05,810 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 22:45:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:05,811 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 22:45:05,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:45:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 22:45:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 22:45:05,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:05,812 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 22:45:05,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:45:05,813 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 22:45:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 22:45:05,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:05,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073625448] [2020-08-18 22:45:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:05,886 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 22:45:05,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073625448] [2020-08-18 22:45:05,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:05,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:45:05,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42182965] [2020-08-18 22:45:05,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:45:05,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:45:05,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:45:05,889 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 22:45:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:06,174 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 22:45:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:45:06,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 22:45:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:06,177 INFO L225 Difference]: With dead ends: 182 [2020-08-18 22:45:06,177 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 22:45:06,178 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 22:45:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 22:45:06,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 22:45:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 22:45:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 22:45:06,184 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 22:45:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:06,184 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 22:45:06,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:45:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 22:45:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 22:45:06,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:06,186 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 22:45:06,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:45:06,186 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 22:45:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:06,187 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 22:45:06,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:06,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445130895] [2020-08-18 22:45:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:06,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:06,440 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 22:45:06,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445130895] [2020-08-18 22:45:06,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:06,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:45:06,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073983453] [2020-08-18 22:45:06,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:45:06,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:45:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:45:06,442 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 22:45:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:07,174 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 22:45:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:45:07,174 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 22:45:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:07,178 INFO L225 Difference]: With dead ends: 237 [2020-08-18 22:45:07,178 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 22:45:07,179 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 22:45:07,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 22:45:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 22:45:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 22:45:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 22:45:07,188 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 22:45:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:07,189 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 22:45:07,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:45:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 22:45:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 22:45:07,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:07,190 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 22:45:07,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 22:45:07,191 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 22:45:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 22:45:07,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:07,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307438342] [2020-08-18 22:45:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:07,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:07,249 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 22:45:07,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307438342] [2020-08-18 22:45:07,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:07,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:45:07,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769159414] [2020-08-18 22:45:07,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:45:07,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:07,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:45:07,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:45:07,252 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 22:45:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:07,464 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 22:45:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:45:07,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 22:45:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:07,467 INFO L225 Difference]: With dead ends: 145 [2020-08-18 22:45:07,468 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 22:45:07,468 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 22:45:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 22:45:07,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 22:45:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 22:45:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 22:45:07,477 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 22:45:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:07,478 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 22:45:07,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:45:07,478 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 22:45:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 22:45:07,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:07,493 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 22:45:07,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 22:45:07,494 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 22:45:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:07,494 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 22:45:07,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:07,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839728012] [2020-08-18 22:45:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:07,551 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 22:45:07,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839728012] [2020-08-18 22:45:07,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:07,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:07,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966081473] [2020-08-18 22:45:07,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:07,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:07,553 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 22:45:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:07,684 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 22:45:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:07,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 22:45:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:07,685 INFO L225 Difference]: With dead ends: 119 [2020-08-18 22:45:07,686 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 22:45:07,686 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 22:45:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 22:45:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 22:45:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 22:45:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 22:45:07,694 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 22:45:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:07,694 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 22:45:07,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 22:45:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 22:45:07,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:07,696 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 22:45:07,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 22:45:07,696 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 22:45:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:07,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 22:45:07,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:07,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10884397] [2020-08-18 22:45:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:07,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:07,877 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 22:45:07,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10884397] [2020-08-18 22:45:07,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:07,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:45:07,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631264321] [2020-08-18 22:45:07,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:45:07,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:45:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:45:07,880 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 22:45:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:08,494 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 22:45:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:45:08,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 22:45:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:08,497 INFO L225 Difference]: With dead ends: 240 [2020-08-18 22:45:08,497 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 22:45:08,498 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 22:45:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 22:45:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 22:45:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 22:45:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 22:45:08,512 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 22:45:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:08,514 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 22:45:08,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:45:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 22:45:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 22:45:08,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:08,515 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 22:45:08,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 22:45:08,515 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 22:45:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:08,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 22:45:08,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:08,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648347676] [2020-08-18 22:45:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:08,606 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 22:45:08,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648347676] [2020-08-18 22:45:08,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:45:08,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 22:45:08,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451528746] [2020-08-18 22:45:08,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:45:08,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:45:08,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:45:08,611 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 22:45:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:08,878 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 22:45:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:45:08,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 22:45:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:08,880 INFO L225 Difference]: With dead ends: 207 [2020-08-18 22:45:08,880 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 22:45:08,881 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 22:45:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 22:45:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 22:45:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 22:45:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 22:45:08,893 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 22:45:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:08,893 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 22:45:08,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:45:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 22:45:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 22:45:08,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:08,896 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 22:45:08,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 22:45:08,896 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 22:45:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:08,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 22:45:08,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:08,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289408788] [2020-08-18 22:45:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:08,987 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 22:45:08,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289408788] [2020-08-18 22:45:08,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:08,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:45:08,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250576392] [2020-08-18 22:45:08,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:45:08,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:08,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:45:08,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:45:08,991 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 22:45:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:09,291 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 22:45:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:45:09,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 22:45:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:09,294 INFO L225 Difference]: With dead ends: 198 [2020-08-18 22:45:09,294 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 22:45:09,297 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 22:45:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 22:45:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 22:45:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 22:45:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 22:45:09,307 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 22:45:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:09,307 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 22:45:09,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:45:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 22:45:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 22:45:09,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:09,308 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 22:45:09,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 22:45:09,309 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 22:45:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 22:45:09,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:09,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860998882] [2020-08-18 22:45:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:09,374 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 22:45:09,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860998882] [2020-08-18 22:45:09,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:09,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:45:09,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946208454] [2020-08-18 22:45:09,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:45:09,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:09,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:45:09,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:45:09,376 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 22:45:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:09,651 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 22:45:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:45:09,652 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 22:45:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:09,653 INFO L225 Difference]: With dead ends: 182 [2020-08-18 22:45:09,653 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 22:45:09,654 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 22:45:09,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 22:45:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 22:45:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 22:45:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 22:45:09,668 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 22:45:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:09,668 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 22:45:09,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:45:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 22:45:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 22:45:09,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:09,669 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 22:45:09,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 22:45:09,669 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 22:45:09,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:09,670 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 22:45:09,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381507467] [2020-08-18 22:45:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:09,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:09,749 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 22:45:09,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381507467] [2020-08-18 22:45:09,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:45:09,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 22:45:09,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720808661] [2020-08-18 22:45:09,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:45:09,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:09,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:45:09,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:45:09,755 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 22:45:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:10,109 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 22:45:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:45:10,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 22:45:10,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:10,113 INFO L225 Difference]: With dead ends: 241 [2020-08-18 22:45:10,113 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 22:45:10,114 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 22:45:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 22:45:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 22:45:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 22:45:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 22:45:10,125 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 22:45:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:10,125 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 22:45:10,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:45:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 22:45:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 22:45:10,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:10,126 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 22:45:10,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 22:45:10,127 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 22:45:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:10,127 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 22:45:10,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:10,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870160028] [2020-08-18 22:45:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:10,159 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 22:45:10,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870160028] [2020-08-18 22:45:10,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:10,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:45:10,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918361807] [2020-08-18 22:45:10,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:45:10,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:10,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:45:10,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:45:10,161 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 22:45:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:10,296 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 22:45:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:45:10,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 22:45:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:10,298 INFO L225 Difference]: With dead ends: 354 [2020-08-18 22:45:10,299 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 22:45:10,299 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 22:45:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 22:45:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 22:45:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 22:45:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 22:45:10,315 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 22:45:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:10,315 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 22:45:10,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:45:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 22:45:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 22:45:10,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:10,317 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 22:45:10,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 22:45:10,317 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 22:45:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:10,317 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 22:45:10,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:10,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691947014] [2020-08-18 22:45:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:10,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:10,630 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 22:45:10,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691947014] [2020-08-18 22:45:10,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:45:10,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:45:10,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519492803] [2020-08-18 22:45:10,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:45:10,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:10,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:45:10,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:45:10,634 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 22:45:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:11,368 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 22:45:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:45:11,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 22:45:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:11,371 INFO L225 Difference]: With dead ends: 430 [2020-08-18 22:45:11,371 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 22:45:11,372 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 22:45:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 22:45:11,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 22:45:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 22:45:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 22:45:11,387 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 22:45:11,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:11,387 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 22:45:11,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:45:11,387 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 22:45:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 22:45:11,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:11,388 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 22:45:11,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 22:45:11,389 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 22:45:11,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:11,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 22:45:11,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:11,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299866729] [2020-08-18 22:45:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:11,450 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 22:45:11,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299866729] [2020-08-18 22:45:11,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:45:11,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:45:11,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402735885] [2020-08-18 22:45:11,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:45:11,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:11,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:45:11,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:45:11,453 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 22:45:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:11,652 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 22:45:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:45:11,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 22:45:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:11,657 INFO L225 Difference]: With dead ends: 353 [2020-08-18 22:45:11,657 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 22:45:11,658 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 22:45:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 22:45:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 22:45:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 22:45:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 22:45:11,674 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 22:45:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:11,674 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 22:45:11,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:45:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 22:45:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 22:45:11,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:11,675 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 22:45:11,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 22:45:11,676 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 22:45:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 22:45:11,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:11,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787438613] [2020-08-18 22:45:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:45:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:45:11,931 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 22:45:11,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787438613] [2020-08-18 22:45:11,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:45:11,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:45:11,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985172395] [2020-08-18 22:45:11,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:45:11,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:45:11,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:45:11,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:45:11,942 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 22:45:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:45:12,622 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 22:45:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 22:45:12,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 22:45:12,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:45:12,624 INFO L225 Difference]: With dead ends: 441 [2020-08-18 22:45:12,624 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 22:45:12,625 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 22:45:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 22:45:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 22:45:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 22:45:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 22:45:12,642 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 22:45:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:45:12,642 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 22:45:12,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:45:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 22:45:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 22:45:12,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:45:12,644 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 22:45:12,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 22:45:12,644 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 22:45:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:45:12,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 22:45:12,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:45:12,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117354896] [2020-08-18 22:45:12,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:45:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:45:12,670 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:45:12,670 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:45:12,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 22:45:12,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:45:12 BoogieIcfgContainer [2020-08-18 22:45:12,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:45:12,717 INFO L168 Benchmark]: Toolchain (without parser) took 11892.48 ms. Allocated memory was 140.5 MB in the beginning and 334.5 MB in the end (delta: 194.0 MB). Free memory was 102.3 MB in the beginning and 90.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 205.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:45:12,718 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:45:12,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.17 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 171.0 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:45:12,719 INFO L168 Benchmark]: Boogie Preprocessor took 74.40 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:45:12,719 INFO L168 Benchmark]: RCFGBuilder took 774.82 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 111.6 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:45:12,720 INFO L168 Benchmark]: TraceAbstraction took 10338.85 ms. Allocated memory was 204.5 MB in the beginning and 334.5 MB in the end (delta: 130.0 MB). Free memory was 111.6 MB in the beginning and 90.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 150.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:45:12,736 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 699.17 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 171.0 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.40 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 774.82 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 111.6 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10338.85 ms. Allocated memory was 204.5 MB in the beginning and 334.5 MB in the end (delta: 130.0 MB). Free memory was 111.6 MB in the beginning and 90.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 150.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.2s, 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, 4.4s 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: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s 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...