/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:47:32,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:47:32,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:47:32,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:47:32,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:47:32,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:47:32,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:47:32,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:47:32,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:47:32,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:47:32,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:47:32,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:47:32,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:47:32,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:47:32,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:47:32,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:47:32,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:47:32,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:47:32,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:47:32,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:47:32,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:47:32,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:47:32,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:47:32,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:47:32,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:47:32,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:47:32,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:47:32,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:47:32,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:47:32,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:47:32,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:47:32,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:47:32,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:47:32,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:47:32,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:47:32,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:47:32,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:47:32,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:47:32,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:47:32,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:47:32,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:47:32,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:47:32,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:47:32,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:47:32,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:47:32,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:47:32,517 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:47:32,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:47:32,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:47:32,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:47:32,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:47:32,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:47:32,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:47:32,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:47:32,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:47:32,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:47:32,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:47:32,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:47:32,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:47:32,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:47:32,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:47:32,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:47:32,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:47:32,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:47:32,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:47:32,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:47:32,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:47:32,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:47:32,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:47:32,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:47:32,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:47:32,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:47:32,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:47:32,856 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:47:32,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:47:32,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:47:32,864 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:47:32,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-22 16:47:32,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8885ababf/24d590d2e41843999d16a5a325e3dd02/FLAGa176a97ca [2020-08-22 16:47:33,475 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:47:33,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-22 16:47:33,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8885ababf/24d590d2e41843999d16a5a325e3dd02/FLAGa176a97ca [2020-08-22 16:47:33,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8885ababf/24d590d2e41843999d16a5a325e3dd02 [2020-08-22 16:47:33,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:47:33,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:47:33,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:33,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:47:33,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:47:33,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:33" (1/1) ... [2020-08-22 16:47:33,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ba2538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:33, skipping insertion in model container [2020-08-22 16:47:33,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:33" (1/1) ... [2020-08-22 16:47:33,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:47:33,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:47:34,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:34,396 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:47:34,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:34,493 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:47:34,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34 WrapperNode [2020-08-22 16:47:34,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:34,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:47:34,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:47:34,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:47:34,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... [2020-08-22 16:47:34,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:47:34,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:47:34,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:47:34,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:47:34,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:47:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:47:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:47:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:47:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 16:47:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 16:47:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 16:47:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 16:47:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 16:47:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 16:47:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 16:47:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 16:47:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 16:47:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 16:47:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 16:47:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 16:47:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 16:47:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 16:47:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 16:47:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 16:47:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 16:47:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 16:47:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 16:47:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 16:47:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 16:47:34,637 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 16:47:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 16:47:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 16:47:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 16:47:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 16:47:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 16:47:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 16:47:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 16:47:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 16:47:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 16:47:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 16:47:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 16:47:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 16:47:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 16:47:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 16:47:34,643 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 16:47:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 16:47:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 16:47:34,645 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 16:47:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 16:47:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 16:47:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 16:47:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 16:47:34,646 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 16:47:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 16:47:34,647 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 16:47:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 16:47:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 16:47:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 16:47:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 16:47:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 16:47:34,648 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 16:47:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 16:47:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 16:47:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 16:47:34,649 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 16:47:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 16:47:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 16:47:34,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 16:47:34,651 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 16:47:34,651 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 16:47:34,652 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 16:47:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:47:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:47:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 16:47:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 16:47:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:47:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:47:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:47:35,328 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:47:35,329 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 16:47:35,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:35 BoogieIcfgContainer [2020-08-22 16:47:35,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:47:35,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:47:35,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:47:35,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:47:35,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:47:33" (1/3) ... [2020-08-22 16:47:35,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e142286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:35, skipping insertion in model container [2020-08-22 16:47:35,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:34" (2/3) ... [2020-08-22 16:47:35,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e142286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:35, skipping insertion in model container [2020-08-22 16:47:35,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:35" (3/3) ... [2020-08-22 16:47:35,342 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-08-22 16:47:35,352 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:47:35,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 16:47:35,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 16:47:35,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:47:35,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:47:35,399 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:47:35,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:47:35,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:47:35,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:47:35,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:47:35,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:47:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-22 16:47:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-22 16:47:35,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:35,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:35,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-08-22 16:47:35,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:35,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849808002] [2020-08-22 16:47:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:35,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849808002] [2020-08-22 16:47:35,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:35,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:35,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450681556] [2020-08-22 16:47:35,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:35,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:35,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:35,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:35,698 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-22 16:47:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:35,905 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-08-22 16:47:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:35,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-22 16:47:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:35,917 INFO L225 Difference]: With dead ends: 186 [2020-08-22 16:47:35,917 INFO L226 Difference]: Without dead ends: 99 [2020-08-22 16:47:35,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:35,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-22 16:47:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-08-22 16:47:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 16:47:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-22 16:47:35,968 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-08-22 16:47:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:35,969 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-22 16:47:35,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-22 16:47:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:35,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:35,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:35,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:47:35,970 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:35,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-08-22 16:47:35,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:35,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693891131] [2020-08-22 16:47:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:36,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693891131] [2020-08-22 16:47:36,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:36,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:36,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334006201] [2020-08-22 16:47:36,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:36,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:36,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:36,034 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-08-22 16:47:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:36,187 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-08-22 16:47:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:36,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-22 16:47:36,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:36,190 INFO L225 Difference]: With dead ends: 84 [2020-08-22 16:47:36,190 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 16:47:36,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 16:47:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-08-22 16:47:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 16:47:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-08-22 16:47:36,217 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-08-22 16:47:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:36,217 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-08-22 16:47:36,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-08-22 16:47:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:36,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:36,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:36,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:47:36,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:36,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:36,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-08-22 16:47:36,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:36,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30903697] [2020-08-22 16:47:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:36,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30903697] [2020-08-22 16:47:36,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:36,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:36,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503031119] [2020-08-22 16:47:36,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:36,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:36,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:36,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:36,358 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-08-22 16:47:36,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:36,558 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-08-22 16:47:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:47:36,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:47:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:36,561 INFO L225 Difference]: With dead ends: 138 [2020-08-22 16:47:36,561 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 16:47:36,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:36,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 16:47:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-08-22 16:47:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-22 16:47:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-08-22 16:47:36,573 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-08-22 16:47:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:36,574 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-08-22 16:47:36,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-08-22 16:47:36,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:36,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:36,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:36,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:47:36,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:36,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-08-22 16:47:36,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:36,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063066282] [2020-08-22 16:47:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:36,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063066282] [2020-08-22 16:47:36,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:36,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:36,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981197715] [2020-08-22 16:47:36,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:36,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:36,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:36,698 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-08-22 16:47:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:36,880 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-08-22 16:47:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:36,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:47:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:36,882 INFO L225 Difference]: With dead ends: 84 [2020-08-22 16:47:36,883 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 16:47:36,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 16:47:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-22 16:47:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-22 16:47:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-08-22 16:47:36,900 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-08-22 16:47:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:36,900 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-08-22 16:47:36,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-08-22 16:47:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:47:36,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:36,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:36,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:47:36,926 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:36,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:36,926 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-08-22 16:47:36,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:36,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413582388] [2020-08-22 16:47:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:37,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413582388] [2020-08-22 16:47:37,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:37,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:37,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106791232] [2020-08-22 16:47:37,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:37,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:37,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:37,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:37,025 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-08-22 16:47:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:37,252 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-08-22 16:47:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:37,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-22 16:47:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:37,255 INFO L225 Difference]: With dead ends: 199 [2020-08-22 16:47:37,255 INFO L226 Difference]: Without dead ends: 132 [2020-08-22 16:47:37,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-22 16:47:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-08-22 16:47:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 16:47:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-22 16:47:37,268 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-08-22 16:47:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:37,268 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-22 16:47:37,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-22 16:47:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:47:37,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:37,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:37,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:47:37,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:37,270 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-08-22 16:47:37,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:37,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868096285] [2020-08-22 16:47:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:37,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868096285] [2020-08-22 16:47:37,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:37,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:37,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335069563] [2020-08-22 16:47:37,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:37,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:37,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:37,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:37,344 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-08-22 16:47:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:37,558 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-08-22 16:47:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:47:37,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 16:47:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:37,560 INFO L225 Difference]: With dead ends: 126 [2020-08-22 16:47:37,560 INFO L226 Difference]: Without dead ends: 122 [2020-08-22 16:47:37,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-22 16:47:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-08-22 16:47:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 16:47:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-08-22 16:47:37,567 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-08-22 16:47:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:37,567 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-08-22 16:47:37,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-08-22 16:47:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:47:37,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:37,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:37,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 16:47:37,569 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-08-22 16:47:37,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:37,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780674390] [2020-08-22 16:47:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:37,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780674390] [2020-08-22 16:47:37,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:37,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:37,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555834130] [2020-08-22 16:47:37,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:37,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:37,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:37,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:37,620 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 6 states. [2020-08-22 16:47:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:37,806 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-22 16:47:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:37,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-22 16:47:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:37,807 INFO L225 Difference]: With dead ends: 136 [2020-08-22 16:47:37,808 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 16:47:37,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 16:47:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-08-22 16:47:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 16:47:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-08-22 16:47:37,814 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-08-22 16:47:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:37,814 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-08-22 16:47:37,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-08-22 16:47:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:47:37,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:37,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:37,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 16:47:37,816 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:37,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-08-22 16:47:37,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:37,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067085118] [2020-08-22 16:47:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:37,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067085118] [2020-08-22 16:47:37,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:37,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:37,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871156905] [2020-08-22 16:47:37,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:37,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:37,882 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-08-22 16:47:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:38,005 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-08-22 16:47:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:38,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 16:47:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:38,007 INFO L225 Difference]: With dead ends: 141 [2020-08-22 16:47:38,007 INFO L226 Difference]: Without dead ends: 100 [2020-08-22 16:47:38,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-22 16:47:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-08-22 16:47:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-22 16:47:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-08-22 16:47:38,013 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-08-22 16:47:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:38,014 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-08-22 16:47:38,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:38,014 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-08-22 16:47:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:47:38,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:38,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:38,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 16:47:38,023 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-08-22 16:47:38,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:38,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103807956] [2020-08-22 16:47:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:38,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103807956] [2020-08-22 16:47:38,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:38,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:38,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435739853] [2020-08-22 16:47:38,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:38,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:38,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:38,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:38,061 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-08-22 16:47:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:38,153 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-08-22 16:47:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:38,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 16:47:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:38,154 INFO L225 Difference]: With dead ends: 79 [2020-08-22 16:47:38,154 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 16:47:38,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 16:47:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-08-22 16:47:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 16:47:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-08-22 16:47:38,160 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-08-22 16:47:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:38,160 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-08-22 16:47:38,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-08-22 16:47:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:47:38,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:38,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:38,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 16:47:38,162 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-08-22 16:47:38,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:38,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137663001] [2020-08-22 16:47:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:38,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137663001] [2020-08-22 16:47:38,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:38,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:38,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725831915] [2020-08-22 16:47:38,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:38,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:38,222 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-08-22 16:47:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:38,348 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-08-22 16:47:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:38,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 16:47:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:38,350 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:47:38,350 INFO L226 Difference]: Without dead ends: 76 [2020-08-22 16:47:38,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-22 16:47:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-08-22 16:47:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 16:47:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-22 16:47:38,355 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-08-22 16:47:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:38,355 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-22 16:47:38,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-22 16:47:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:47:38,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:38,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:38,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 16:47:38,357 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:38,357 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-08-22 16:47:38,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:38,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857255179] [2020-08-22 16:47:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:38,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857255179] [2020-08-22 16:47:38,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:38,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:38,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088930581] [2020-08-22 16:47:38,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:38,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:38,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:38,422 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-08-22 16:47:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:38,728 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-08-22 16:47:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:47:38,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 16:47:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:38,730 INFO L225 Difference]: With dead ends: 179 [2020-08-22 16:47:38,730 INFO L226 Difference]: Without dead ends: 137 [2020-08-22 16:47:38,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:47:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-22 16:47:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-08-22 16:47:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 16:47:38,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-22 16:47:38,737 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-08-22 16:47:38,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:38,737 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-22 16:47:38,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:38,738 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-22 16:47:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:47:38,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:38,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:38,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 16:47:38,739 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-08-22 16:47:38,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:38,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865154282] [2020-08-22 16:47:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865154282] [2020-08-22 16:47:39,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:39,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 16:47:39,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905416871] [2020-08-22 16:47:39,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:47:39,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:39,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:47:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:47:39,013 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 9 states. [2020-08-22 16:47:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:39,735 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2020-08-22 16:47:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:47:39,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-08-22 16:47:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:39,741 INFO L225 Difference]: With dead ends: 182 [2020-08-22 16:47:39,741 INFO L226 Difference]: Without dead ends: 180 [2020-08-22 16:47:39,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:47:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-22 16:47:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 104. [2020-08-22 16:47:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-22 16:47:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2020-08-22 16:47:39,754 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 28 [2020-08-22 16:47:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:39,754 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2020-08-22 16:47:39,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:47:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2020-08-22 16:47:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:47:39,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:39,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:39,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 16:47:39,759 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:39,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:39,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-08-22 16:47:39,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:39,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610621360] [2020-08-22 16:47:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:47:39,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610621360] [2020-08-22 16:47:39,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:39,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:39,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078569222] [2020-08-22 16:47:39,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:39,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:39,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:39,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:39,832 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 5 states. [2020-08-22 16:47:40,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:40,018 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-08-22 16:47:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:47:40,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 16:47:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:40,020 INFO L225 Difference]: With dead ends: 150 [2020-08-22 16:47:40,020 INFO L226 Difference]: Without dead ends: 132 [2020-08-22 16:47:40,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-22 16:47:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-08-22 16:47:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 16:47:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-08-22 16:47:40,029 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 30 [2020-08-22 16:47:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:40,030 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-08-22 16:47:40,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-08-22 16:47:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:47:40,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:40,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:40,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 16:47:40,032 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:40,032 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-08-22 16:47:40,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:40,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593119346] [2020-08-22 16:47:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:47:40,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593119346] [2020-08-22 16:47:40,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:40,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:40,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313384730] [2020-08-22 16:47:40,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:40,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:40,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:40,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:40,069 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 4 states. [2020-08-22 16:47:40,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:40,188 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-08-22 16:47:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:40,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-22 16:47:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:40,189 INFO L225 Difference]: With dead ends: 124 [2020-08-22 16:47:40,189 INFO L226 Difference]: Without dead ends: 122 [2020-08-22 16:47:40,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-22 16:47:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-08-22 16:47:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 16:47:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-08-22 16:47:40,197 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 30 [2020-08-22 16:47:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:40,198 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-08-22 16:47:40,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-08-22 16:47:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 16:47:40,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:40,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:40,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 16:47:40,199 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:40,200 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-08-22 16:47:40,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:40,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679464182] [2020-08-22 16:47:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:47:40,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:47:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:47:40,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:47:40,251 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:47:40,252 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:47:40,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 16:47:40,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:47:40 BoogieIcfgContainer [2020-08-22 16:47:40,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:47:40,317 INFO L168 Benchmark]: Toolchain (without parser) took 6535.77 ms. Allocated memory was 141.0 MB in the beginning and 282.6 MB in the end (delta: 141.6 MB). Free memory was 102.5 MB in the beginning and 175.0 MB in the end (delta: -72.5 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:40,317 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:47:40,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.31 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.3 MB in the beginning and 168.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:40,324 INFO L168 Benchmark]: Boogie Preprocessor took 72.15 ms. Allocated memory is still 202.9 MB. Free memory was 168.8 MB in the beginning and 165.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:40,325 INFO L168 Benchmark]: RCFGBuilder took 766.12 ms. Allocated memory is still 202.9 MB. Free memory was 165.5 MB in the beginning and 109.4 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:40,325 INFO L168 Benchmark]: TraceAbstraction took 4978.69 ms. Allocated memory was 202.9 MB in the beginning and 282.6 MB in the end (delta: 79.7 MB). Free memory was 108.8 MB in the beginning and 175.0 MB in the end (delta: -66.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:47:40,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.31 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.3 MB in the beginning and 168.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.15 ms. Allocated memory is still 202.9 MB. Free memory was 168.8 MB in the beginning and 165.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 766.12 ms. Allocated memory is still 202.9 MB. Free memory was 165.5 MB in the beginning and 109.4 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4978.69 ms. Allocated memory was 202.9 MB in the beginning and 282.6 MB in the end (delta: 79.7 MB). Free memory was 108.8 MB in the beginning and 175.0 MB in the end (delta: -66.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1016 SDtfs, 1075 SDslu, 1380 SDs, 0 SdLazy, 1834 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 367 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 49886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 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...