/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=NARROWEST -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 21:56:36,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:56:36,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:56:36,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:56:36,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:56:36,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:56:36,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:56:36,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:56:36,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:56:36,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:56:36,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:56:36,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:56:36,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:56:36,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:56:36,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:56:36,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:56:36,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:56:36,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:56:36,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:56:36,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:56:36,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:56:36,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:56:36,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:56:36,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:56:36,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:56:36,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:56:36,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:56:36,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:56:36,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:56:36,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:56:36,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:56:36,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:56:36,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:56:36,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:56:36,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:56:36,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:56:36,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:56:36,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:56:36,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:56:36,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:56:36,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:56:36,490 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 21:56:36,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:56:36,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:56:36,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:56:36,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:56:36,516 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:56:36,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:56:36,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:56:36,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:56:36,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:56:36,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:56:36,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:56:36,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:56:36,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:56:36,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:56:36,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:56:36,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:56:36,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:56:36,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:56:36,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:56:36,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:56:36,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:56:36,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:56:36,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:56:36,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:56:36,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:56:36,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:56:36,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:56:36,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:56:36,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:56:36,521 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:56:36,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:56:36,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:56:36,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:56:36,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:56:36,853 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:56:36,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 21:56:36,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ba561ef/4675b898182a4b59aab619121d1d7ae2/FLAG9854c890f [2020-08-18 21:56:37,374 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:56:37,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 21:56:37,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ba561ef/4675b898182a4b59aab619121d1d7ae2/FLAG9854c890f [2020-08-18 21:56:37,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0ba561ef/4675b898182a4b59aab619121d1d7ae2 [2020-08-18 21:56:37,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:56:37,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:56:37,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:56:37,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:56:37,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:56:37,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:56:37" (1/1) ... [2020-08-18 21:56:37,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281ec5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:37, skipping insertion in model container [2020-08-18 21:56:37,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:56:37" (1/1) ... [2020-08-18 21:56:37,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:56:37,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:56:38,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:56:38,270 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:56:38,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:56:38,385 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:56:38,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38 WrapperNode [2020-08-18 21:56:38,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:56:38,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:56:38,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:56:38,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:56:38,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (1/1) ... [2020-08-18 21:56:38,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:56:38,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:56:38,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:56:38,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:56:38,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (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 21:56:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:56:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:56:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:56:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 21:56:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 21:56:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 21:56:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 21:56:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 21:56:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 21:56:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 21:56:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 21:56:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 21:56:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 21:56:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 21:56:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 21:56:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 21:56:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 21:56:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 21:56:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 21:56:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 21:56:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 21:56:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 21:56:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 21:56:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 21:56:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 21:56:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 21:56:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 21:56:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 21:56:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 21:56:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 21:56:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 21:56:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 21:56:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 21:56:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 21:56:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 21:56:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 21:56:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 21:56:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 21:56:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 21:56:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 21:56:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 21:56:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 21:56:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 21:56:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 21:56:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 21:56:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 21:56:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 21:56:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:56:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 21:56:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 21:56:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:56:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 21:56:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 21:56:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 21:56:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 21:56:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 21:56:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 21:56:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 21:56:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 21:56:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 21:56:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 21:56:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 21:56:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 21:56:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 21:56:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 21:56:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 21:56:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 21:56:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 21:56:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 21:56:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 21:56:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 21:56:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 21:56:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 21:56:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 21:56:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 21:56:38,540 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 21:56:38,541 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 21:56:38,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 21:56:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 21:56:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 21:56:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 21:56:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 21:56:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:56:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:56:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:56:39,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:56:39,304 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 21:56:39,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:56:39 BoogieIcfgContainer [2020-08-18 21:56:39,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:56:39,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:56:39,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:56:39,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:56:39,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:56:37" (1/3) ... [2020-08-18 21:56:39,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233b2d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:56:39, skipping insertion in model container [2020-08-18 21:56:39,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:56:38" (2/3) ... [2020-08-18 21:56:39,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233b2d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:56:39, skipping insertion in model container [2020-08-18 21:56:39,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:56:39" (3/3) ... [2020-08-18 21:56:39,318 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 21:56:39,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:56:39,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 21:56:39,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 21:56:39,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:56:39,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:56:39,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:56:39,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:56:39,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:56:39,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:56:39,380 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:56:39,380 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:56:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 21:56:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 21:56:39,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:39,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:56:39,414 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 21:56:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 21:56:39,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:39,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170127833] [2020-08-18 21:56:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:39,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:39,641 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 21:56:39,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170127833] [2020-08-18 21:56:39,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:39,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:39,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238880689] [2020-08-18 21:56:39,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:39,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:39,671 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 21:56:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:40,018 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 21:56:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:40,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 21:56:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:40,038 INFO L225 Difference]: With dead ends: 188 [2020-08-18 21:56:40,038 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 21:56:40,044 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 21:56:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 21:56:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 21:56:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 21:56:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 21:56:40,095 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 21:56:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:40,095 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 21:56:40,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 21:56:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:56:40,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:40,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:56:40,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:56:40,097 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 21:56:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:40,097 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 21:56:40,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:40,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68873687] [2020-08-18 21:56:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:40,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:40,172 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 21:56:40,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68873687] [2020-08-18 21:56:40,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:40,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:40,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72731157] [2020-08-18 21:56:40,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:40,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:40,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:40,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:40,176 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 21:56:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:40,346 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 21:56:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:40,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 21:56:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:40,348 INFO L225 Difference]: With dead ends: 85 [2020-08-18 21:56:40,348 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 21:56:40,349 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 21:56:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 21:56:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 21:56:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 21:56:40,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 21:56:40,360 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 21:56:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:40,360 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 21:56:40,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 21:56:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:56:40,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:40,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:56:40,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:56:40,362 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 21:56:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:40,362 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 21:56:40,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:40,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845336968] [2020-08-18 21:56:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:40,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:40,434 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 21:56:40,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845336968] [2020-08-18 21:56:40,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:40,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:56:40,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622386580] [2020-08-18 21:56:40,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:56:40,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:40,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:56:40,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:56:40,437 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 21:56:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:40,648 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 21:56:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:56:40,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 21:56:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:40,651 INFO L225 Difference]: With dead ends: 140 [2020-08-18 21:56:40,651 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 21:56:40,651 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 21:56:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 21:56:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 21:56:40,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 21:56:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 21:56:40,662 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 21:56:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:40,663 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 21:56:40,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:56:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 21:56:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:56:40,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:40,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:56:40,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:56:40,664 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 21:56:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:40,665 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 21:56:40,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:40,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140548006] [2020-08-18 21:56:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:40,747 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 21:56:40,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140548006] [2020-08-18 21:56:40,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:40,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:56:40,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132263808] [2020-08-18 21:56:40,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:56:40,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:40,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:56:40,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:56:40,750 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 21:56:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:40,936 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 21:56:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:56:40,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 21:56:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:40,939 INFO L225 Difference]: With dead ends: 85 [2020-08-18 21:56:40,940 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 21:56:40,940 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 21:56:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 21:56:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 21:56:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 21:56:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 21:56:40,960 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 21:56:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:40,960 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 21:56:40,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:56:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 21:56:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 21:56:40,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:40,965 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 21:56:40,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:56:40,965 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 21:56:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 21:56:40,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:40,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959953066] [2020-08-18 21:56:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,049 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 21:56:41,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959953066] [2020-08-18 21:56:41,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:41,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:41,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563700179] [2020-08-18 21:56:41,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:41,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:41,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:41,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:41,052 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 21:56:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:41,216 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 21:56:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:41,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 21:56:41,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:41,217 INFO L225 Difference]: With dead ends: 83 [2020-08-18 21:56:41,218 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 21:56:41,219 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 21:56:41,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 21:56:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 21:56:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 21:56:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 21:56:41,231 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 21:56:41,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:41,232 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 21:56:41,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 21:56:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 21:56:41,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:41,233 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 21:56:41,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:56:41,233 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 21:56:41,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:41,234 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 21:56:41,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:41,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560872333] [2020-08-18 21:56:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,316 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 21:56:41,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560872333] [2020-08-18 21:56:41,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:41,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:56:41,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380684333] [2020-08-18 21:56:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:56:41,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:56:41,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:56:41,320 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 21:56:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:41,501 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 21:56:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:56:41,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 21:56:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:41,504 INFO L225 Difference]: With dead ends: 136 [2020-08-18 21:56:41,504 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 21:56:41,508 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 21:56:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 21:56:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 21:56:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 21:56:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 21:56:41,526 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 21:56:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:41,526 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 21:56:41,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:56:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 21:56:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 21:56:41,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:41,529 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 21:56:41,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:56:41,530 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 21:56:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:41,531 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 21:56:41,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:41,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179155672] [2020-08-18 21:56:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,622 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 21:56:41,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179155672] [2020-08-18 21:56:41,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:41,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:41,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968631515] [2020-08-18 21:56:41,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:41,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:41,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:41,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:41,628 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 21:56:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:41,754 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 21:56:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:41,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 21:56:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:41,757 INFO L225 Difference]: With dead ends: 141 [2020-08-18 21:56:41,757 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 21:56:41,758 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 21:56:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 21:56:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 21:56:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 21:56:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 21:56:41,774 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 21:56:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:41,775 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 21:56:41,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 21:56:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 21:56:41,779 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:41,779 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 21:56:41,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:56:41,780 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 21:56:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:41,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 21:56:41,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:41,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944402517] [2020-08-18 21:56:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:41,853 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 21:56:41,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944402517] [2020-08-18 21:56:41,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:41,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:41,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894823767] [2020-08-18 21:56:41,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:41,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:41,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:41,856 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 21:56:41,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:41,983 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 21:56:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:41,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 21:56:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:41,984 INFO L225 Difference]: With dead ends: 78 [2020-08-18 21:56:41,984 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 21:56:41,985 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 21:56:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 21:56:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 21:56:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 21:56:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 21:56:41,992 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 21:56:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:41,997 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 21:56:41,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:41,997 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 21:56:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:56:41,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:41,998 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 21:56:41,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:56:41,999 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 21:56:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:42,000 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 21:56:42,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:42,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922246029] [2020-08-18 21:56:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:42,048 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 21:56:42,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922246029] [2020-08-18 21:56:42,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:42,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:56:42,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235274590] [2020-08-18 21:56:42,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:56:42,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:42,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:56:42,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:56:42,051 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 21:56:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:42,285 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 21:56:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:56:42,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 21:56:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:42,287 INFO L225 Difference]: With dead ends: 194 [2020-08-18 21:56:42,287 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 21:56:42,288 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 21:56:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 21:56:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 21:56:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 21:56:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 21:56:42,303 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 21:56:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:42,303 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 21:56:42,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:56:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 21:56:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 21:56:42,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:42,304 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 21:56:42,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:56:42,305 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 21:56:42,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:42,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 21:56:42,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:42,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543697176] [2020-08-18 21:56:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:56:42,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543697176] [2020-08-18 21:56:42,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:42,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:56:42,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29315076] [2020-08-18 21:56:42,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:56:42,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:56:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:56:42,390 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 21:56:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:42,543 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 21:56:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:56:42,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 21:56:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:42,545 INFO L225 Difference]: With dead ends: 79 [2020-08-18 21:56:42,545 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 21:56:42,547 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 21:56:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 21:56:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 21:56:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 21:56:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 21:56:42,553 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 21:56:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:42,553 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 21:56:42,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:56:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 21:56:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:56:42,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:42,557 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 21:56:42,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:56:42,558 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 21:56:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:42,558 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 21:56:42,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:42,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148854313] [2020-08-18 21:56:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:42,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:42,681 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 21:56:42,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148854313] [2020-08-18 21:56:42,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:42,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:56:42,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688280100] [2020-08-18 21:56:42,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:56:42,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:42,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:56:42,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:56:42,684 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 21:56:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:43,010 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 21:56:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:56:43,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 21:56:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:43,012 INFO L225 Difference]: With dead ends: 182 [2020-08-18 21:56:43,012 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 21:56:43,013 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 21:56:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 21:56:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 21:56:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 21:56:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 21:56:43,022 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 21:56:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:43,023 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 21:56:43,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:56:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 21:56:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 21:56:43,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:43,027 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 21:56:43,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:56:43,027 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 21:56:43,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:43,028 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 21:56:43,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:43,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693321886] [2020-08-18 21:56:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:43,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:43,245 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 21:56:43,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693321886] [2020-08-18 21:56:43,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:43,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:56:43,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747728019] [2020-08-18 21:56:43,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:56:43,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:43,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:56:43,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:56:43,247 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 21:56:43,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:43,991 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 21:56:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:56:43,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 21:56:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:43,995 INFO L225 Difference]: With dead ends: 237 [2020-08-18 21:56:43,996 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 21:56:43,996 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 21:56:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 21:56:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 21:56:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 21:56:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 21:56:44,006 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 21:56:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:44,006 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 21:56:44,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:56:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 21:56:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 21:56:44,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:44,008 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 21:56:44,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:56:44,008 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 21:56:44,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:44,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 21:56:44,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:44,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449653916] [2020-08-18 21:56:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:44,062 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 21:56:44,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449653916] [2020-08-18 21:56:44,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:44,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:56:44,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012838049] [2020-08-18 21:56:44,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:56:44,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:44,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:56:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:56:44,064 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 21:56:44,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:44,271 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 21:56:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:56:44,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 21:56:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:44,272 INFO L225 Difference]: With dead ends: 145 [2020-08-18 21:56:44,273 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 21:56:44,273 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 21:56:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 21:56:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 21:56:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 21:56:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 21:56:44,282 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 21:56:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:44,282 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 21:56:44,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:56:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 21:56:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 21:56:44,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:44,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:56:44,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 21:56:44,285 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 21:56:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:44,285 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 21:56:44,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:44,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179183037] [2020-08-18 21:56:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:44,331 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 21:56:44,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179183037] [2020-08-18 21:56:44,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:44,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:44,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137797035] [2020-08-18 21:56:44,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:44,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:44,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:44,333 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 21:56:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:44,481 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 21:56:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:44,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 21:56:44,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:44,483 INFO L225 Difference]: With dead ends: 119 [2020-08-18 21:56:44,483 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 21:56:44,483 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 21:56:44,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 21:56:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 21:56:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 21:56:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 21:56:44,493 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 21:56:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:44,493 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 21:56:44,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 21:56:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 21:56:44,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:44,495 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 21:56:44,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 21:56:44,496 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 21:56:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 21:56:44,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:44,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052859309] [2020-08-18 21:56:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:44,702 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 21:56:44,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052859309] [2020-08-18 21:56:44,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:44,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:56:44,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224757630] [2020-08-18 21:56:44,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:56:44,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:44,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:56:44,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:56:44,704 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 21:56:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:45,286 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 21:56:45,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:56:45,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 21:56:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:45,289 INFO L225 Difference]: With dead ends: 240 [2020-08-18 21:56:45,289 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 21:56:45,290 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 21:56:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 21:56:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 21:56:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 21:56:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 21:56:45,300 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 21:56:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:45,300 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 21:56:45,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:56:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 21:56:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 21:56:45,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:45,301 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 21:56:45,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 21:56:45,301 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 21:56:45,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:45,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 21:56:45,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:45,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121390291] [2020-08-18 21:56:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:45,364 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 21:56:45,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121390291] [2020-08-18 21:56:45,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:56:45,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 21:56:45,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842042502] [2020-08-18 21:56:45,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:56:45,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:45,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:56:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:56:45,366 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 21:56:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:45,672 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 21:56:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:56:45,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 21:56:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:45,674 INFO L225 Difference]: With dead ends: 207 [2020-08-18 21:56:45,674 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 21:56:45,675 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 21:56:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 21:56:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 21:56:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 21:56:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 21:56:45,695 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 21:56:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:45,696 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 21:56:45,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:56:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 21:56:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 21:56:45,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:45,697 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 21:56:45,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 21:56:45,698 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 21:56:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 21:56:45,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:45,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409013001] [2020-08-18 21:56:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:45,814 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 21:56:45,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409013001] [2020-08-18 21:56:45,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:45,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:56:45,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328126224] [2020-08-18 21:56:45,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:56:45,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:45,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:56:45,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:56:45,819 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 21:56:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:46,147 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 21:56:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:56:46,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 21:56:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:46,149 INFO L225 Difference]: With dead ends: 198 [2020-08-18 21:56:46,149 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 21:56:46,149 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 21:56:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 21:56:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 21:56:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 21:56:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 21:56:46,158 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 21:56:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:46,158 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 21:56:46,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:56:46,159 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 21:56:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 21:56:46,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:46,159 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 21:56:46,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 21:56:46,160 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 21:56:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 21:56:46,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:46,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447809512] [2020-08-18 21:56:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:46,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:46,216 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 21:56:46,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447809512] [2020-08-18 21:56:46,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:46,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:56:46,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170790070] [2020-08-18 21:56:46,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:56:46,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:46,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:56:46,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:56:46,218 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 21:56:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:46,406 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 21:56:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:56:46,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 21:56:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:46,408 INFO L225 Difference]: With dead ends: 182 [2020-08-18 21:56:46,408 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 21:56:46,409 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 21:56:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 21:56:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 21:56:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 21:56:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 21:56:46,418 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 21:56:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:46,419 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 21:56:46,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:56:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 21:56:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 21:56:46,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:46,420 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 21:56:46,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 21:56:46,420 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 21:56:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:46,421 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 21:56:46,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:46,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627104845] [2020-08-18 21:56:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:46,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:46,496 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 21:56:46,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627104845] [2020-08-18 21:56:46,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:56:46,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:56:46,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493495318] [2020-08-18 21:56:46,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:56:46,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:46,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:56:46,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:56:46,498 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 21:56:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:46,842 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 21:56:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:56:46,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 21:56:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:46,844 INFO L225 Difference]: With dead ends: 241 [2020-08-18 21:56:46,845 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 21:56:46,845 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 21:56:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 21:56:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 21:56:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 21:56:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 21:56:46,857 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 21:56:46,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:46,858 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 21:56:46,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:56:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 21:56:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 21:56:46,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:46,859 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 21:56:46,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 21:56:46,859 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 21:56:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:46,859 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 21:56:46,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:46,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920400878] [2020-08-18 21:56:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:46,916 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 21:56:46,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920400878] [2020-08-18 21:56:46,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:46,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:56:46,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644025814] [2020-08-18 21:56:46,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:56:46,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:46,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:56:46,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:56:46,920 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 21:56:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:47,076 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 21:56:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:56:47,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 21:56:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:47,078 INFO L225 Difference]: With dead ends: 354 [2020-08-18 21:56:47,078 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 21:56:47,079 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 21:56:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 21:56:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 21:56:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 21:56:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 21:56:47,094 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 21:56:47,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:47,094 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 21:56:47,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:56:47,094 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 21:56:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:56:47,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:47,095 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 21:56:47,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 21:56:47,096 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 21:56:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 21:56:47,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:47,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140617747] [2020-08-18 21:56:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:47,349 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 21:56:47,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140617747] [2020-08-18 21:56:47,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:56:47,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:56:47,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038418481] [2020-08-18 21:56:47,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:56:47,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:56:47,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:56:47,352 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 21:56:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:48,101 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 21:56:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:56:48,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 21:56:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:48,104 INFO L225 Difference]: With dead ends: 430 [2020-08-18 21:56:48,104 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 21:56:48,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:56:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 21:56:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 21:56:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 21:56:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 21:56:48,120 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 21:56:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:48,120 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 21:56:48,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:56:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 21:56:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:56:48,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:48,122 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 21:56:48,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 21:56:48,122 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 21:56:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:48,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 21:56:48,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:48,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656003941] [2020-08-18 21:56:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:48,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:48,179 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 21:56:48,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656003941] [2020-08-18 21:56:48,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:56:48,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:56:48,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430141339] [2020-08-18 21:56:48,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:56:48,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:48,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:56:48,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:56:48,181 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 21:56:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:48,402 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 21:56:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:56:48,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 21:56:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:48,409 INFO L225 Difference]: With dead ends: 353 [2020-08-18 21:56:48,409 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 21:56:48,411 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 21:56:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 21:56:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 21:56:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 21:56:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 21:56:48,427 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 21:56:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:48,428 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 21:56:48,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:56:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 21:56:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:56:48,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:48,429 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 21:56:48,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 21:56:48,429 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 21:56:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:48,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 21:56:48,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:48,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009755239] [2020-08-18 21:56:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:56:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:56:48,705 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 21:56:48,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009755239] [2020-08-18 21:56:48,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:56:48,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:56:48,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062098659] [2020-08-18 21:56:48,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:56:48,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:56:48,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:56:48,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:56:48,708 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 21:56:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:56:49,398 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 21:56:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:56:49,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 21:56:49,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:56:49,401 INFO L225 Difference]: With dead ends: 441 [2020-08-18 21:56:49,401 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 21:56:49,402 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 21:56:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 21:56:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 21:56:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 21:56:49,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 21:56:49,416 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 21:56:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:56:49,417 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 21:56:49,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:56:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 21:56:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 21:56:49,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:56:49,418 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 21:56:49,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 21:56:49,418 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 21:56:49,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:56:49,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 21:56:49,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:56:49,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162289489] [2020-08-18 21:56:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:56:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:56:49,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:56:49,433 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:56:49,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 21:56:49,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:56:49 BoogieIcfgContainer [2020-08-18 21:56:49,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:56:49,459 INFO L168 Benchmark]: Toolchain (without parser) took 11780.64 ms. Allocated memory was 137.9 MB in the beginning and 356.0 MB in the end (delta: 218.1 MB). Free memory was 98.3 MB in the beginning and 243.9 MB in the end (delta: -145.6 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:49,460 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:56:49,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.22 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.9 MB in the beginning and 168.4 MB in the end (delta: -70.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:49,461 INFO L168 Benchmark]: Boogie Preprocessor took 80.35 ms. Allocated memory is still 201.3 MB. Free memory was 168.4 MB in the beginning and 164.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:49,461 INFO L168 Benchmark]: RCFGBuilder took 841.74 ms. Allocated memory is still 201.3 MB. Free memory was 164.9 MB in the beginning and 109.3 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:49,462 INFO L168 Benchmark]: TraceAbstraction took 10146.37 ms. Allocated memory was 201.3 MB in the beginning and 356.0 MB in the end (delta: 154.7 MB). Free memory was 109.3 MB in the beginning and 243.9 MB in the end (delta: -134.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:56:49,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.22 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 97.9 MB in the beginning and 168.4 MB in the end (delta: -70.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.35 ms. Allocated memory is still 201.3 MB. Free memory was 168.4 MB in the beginning and 164.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 841.74 ms. Allocated memory is still 201.3 MB. Free memory was 164.9 MB in the beginning and 109.3 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10146.37 ms. Allocated memory was 201.3 MB in the beginning and 356.0 MB in the end (delta: 154.7 MB). Free memory was 109.3 MB in the beginning and 243.9 MB in the end (delta: -134.6 MB). Peak memory consumption was 20.0 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: 10.0s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 7.0s, 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, 4.3s 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...