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/list-ext3-properties/sll_circular_traversal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:32:18,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:32:18,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:32:18,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 16:32:18,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 16:32:18,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 16:32:18,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 16:32:18,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 16:32:18,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 16:32:18,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 16:32:18,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 16:32:18,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 16:32:18,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:32:18,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:32:18,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:32:18,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:32:18,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:32:18,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:32:18,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:32:18,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:32:18,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:32:18,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:32:18,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:32:18,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:32:18,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 16:32:18,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 16:32:18,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 16:32:18,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 16:32:18,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 16:32:18,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 16:32:18,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 16:32:18,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 16:32:18,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 16:32:18,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 16:32:18,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 16:32:18,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 16:32:18,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 16:32:18,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 16:32:18,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:32:18,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:32:18,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:32:18,575 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 [2019-09-16 16:32:18,602 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:32:18,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:32:18,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:32:18,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:32:18,604 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:32:18,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:32:18,604 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:32:18,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:32:18,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:32:18,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:32:18,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:32:18,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:32:18,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:32:18,606 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:32:18,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:32:18,606 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:32:18,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:32:18,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:32:18,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:32:18,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:32:18,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:32:18,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:32:18,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:32:18,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:32:18,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:32:18,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:32:18,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:32:18,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:32:18,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:32:18,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:32:18,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:32:18,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:32:18,656 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:32:18,656 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:32:18,657 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-09-16 16:32:18,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8baa60f0a/c0a26d2735ee4b47a7352d127b5bd3ba/FLAG380505ed3 [2019-09-16 16:32:19,334 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:32:19,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-09-16 16:32:19,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8baa60f0a/c0a26d2735ee4b47a7352d127b5bd3ba/FLAG380505ed3 [2019-09-16 16:32:19,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8baa60f0a/c0a26d2735ee4b47a7352d127b5bd3ba [2019-09-16 16:32:19,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:32:19,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:32:19,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:32:19,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:32:19,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:32:19,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:32:19" (1/1) ... [2019-09-16 16:32:19,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144b2889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:19, skipping insertion in model container [2019-09-16 16:32:19,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:32:19" (1/1) ... [2019-09-16 16:32:19,603 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:32:19,650 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:32:20,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:32:20,113 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:32:20,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:32:20,240 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:32:20,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20 WrapperNode [2019-09-16 16:32:20,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:32:20,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:32:20,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:32:20,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:32:20,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (1/1) ... [2019-09-16 16:32:20,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:32:20,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:32:20,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:32:20,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:32:20,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (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 [2019-09-16 16:32:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:32:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:32:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-16 16:32:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-16 16:32:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-16 16:32:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-16 16:32:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:32:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:32:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-16 16:32:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-16 16:32:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-16 16:32:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-16 16:32:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-16 16:32:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-16 16:32:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-16 16:32:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-16 16:32:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-16 16:32:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-16 16:32:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-16 16:32:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-16 16:32:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-16 16:32:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-16 16:32:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-16 16:32:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-16 16:32:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-16 16:32:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-16 16:32:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-16 16:32:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-16 16:32:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-16 16:32:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-16 16:32:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-16 16:32:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-16 16:32:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-16 16:32:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-16 16:32:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-16 16:32:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-16 16:32:20,378 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-16 16:32:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-16 16:32:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-16 16:32:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-16 16:32:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-16 16:32:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-16 16:32:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-16 16:32:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-16 16:32:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-16 16:32:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 16:32:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-16 16:32:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-16 16:32:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-16 16:32:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-16 16:32:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-16 16:32:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 16:32:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-16 16:32:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-16 16:32:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-16 16:32:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-16 16:32:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-16 16:32:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-16 16:32:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-16 16:32:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-16 16:32:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-16 16:32:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-16 16:32:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-16 16:32:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-16 16:32:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-16 16:32:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-16 16:32:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-16 16:32:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-16 16:32:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-16 16:32:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-16 16:32:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-16 16:32:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-16 16:32:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-16 16:32:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-16 16:32:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-16 16:32:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-16 16:32:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-16 16:32:20,389 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-16 16:32:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-16 16:32:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 16:32:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 16:32:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 16:32:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:32:20,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 16:32:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 16:32:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 16:32:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:32:20,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:32:20,767 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-16 16:32:20,961 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:32:20,961 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-16 16:32:20,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:32:20 BoogieIcfgContainer [2019-09-16 16:32:20,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:32:20,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:32:20,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:32:20,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:32:20,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:32:19" (1/3) ... [2019-09-16 16:32:20,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbc8444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:32:20, skipping insertion in model container [2019-09-16 16:32:20,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:32:20" (2/3) ... [2019-09-16 16:32:20,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbc8444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:32:20, skipping insertion in model container [2019-09-16 16:32:20,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:32:20" (3/3) ... [2019-09-16 16:32:20,972 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-09-16 16:32:20,982 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:32:20,990 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:32:21,008 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:32:21,039 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:32:21,039 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:32:21,040 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:32:21,043 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:32:21,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:32:21,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:32:21,044 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:32:21,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:32:21,044 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:32:21,060 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-09-16 16:32:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-16 16:32:21,066 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:32:21,067 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:32:21,069 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:32:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:32:21,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1054550836, now seen corresponding path program 1 times [2019-09-16 16:32:21,076 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:32:21,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:32:21,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:21,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:32:21,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:32:21,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:32:21,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:32:21,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:32:21,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:32:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:32:21,269 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-09-16 16:32:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:32:21,301 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-09-16 16:32:21,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:32:21,303 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-16 16:32:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:32:21,313 INFO L225 Difference]: With dead ends: 53 [2019-09-16 16:32:21,313 INFO L226 Difference]: Without dead ends: 26 [2019-09-16 16:32:21,319 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:32:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-16 16:32:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-16 16:32:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-16 16:32:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-09-16 16:32:21,365 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2019-09-16 16:32:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:32:21,365 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-09-16 16:32:21,365 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:32:21,366 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-09-16 16:32:21,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-16 16:32:21,366 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:32:21,367 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:32:21,367 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:32:21,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:32:21,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1615663296, now seen corresponding path program 1 times [2019-09-16 16:32:21,368 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:32:21,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:32:21,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:21,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:32:21,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:32:21,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:32:21,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:32:21,488 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:32:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:32:21,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:32:21,489 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2019-09-16 16:32:21,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:32:21,553 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-09-16 16:32:21,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 16:32:21,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-09-16 16:32:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:32:21,556 INFO L225 Difference]: With dead ends: 42 [2019-09-16 16:32:21,557 INFO L226 Difference]: Without dead ends: 29 [2019-09-16 16:32:21,558 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:32:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-16 16:32:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-16 16:32:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-16 16:32:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-09-16 16:32:21,569 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2019-09-16 16:32:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:32:21,569 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-09-16 16:32:21,569 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:32:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-09-16 16:32:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-16 16:32:21,572 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:32:21,572 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:32:21,572 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:32:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:32:21,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1504540904, now seen corresponding path program 1 times [2019-09-16 16:32:21,573 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:32:21,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:32:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:21,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:32:21,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:32:21,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:32:21,765 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:32:21,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:32:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:21,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-16 16:32:21,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:32:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:32:21,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:32:21,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-16 16:32:21,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 16:32:21,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 16:32:21,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-16 16:32:21,945 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2019-09-16 16:32:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:32:22,011 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-09-16 16:32:22,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:32:22,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-16 16:32:22,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:32:22,014 INFO L225 Difference]: With dead ends: 45 [2019-09-16 16:32:22,014 INFO L226 Difference]: Without dead ends: 32 [2019-09-16 16:32:22,014 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:32:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-16 16:32:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-09-16 16:32:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-16 16:32:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-09-16 16:32:22,020 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2019-09-16 16:32:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:32:22,021 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-09-16 16:32:22,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 16:32:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-09-16 16:32:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 16:32:22,022 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:32:22,022 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:32:22,022 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:32:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:32:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash 469324224, now seen corresponding path program 2 times [2019-09-16 16:32:22,023 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:32:22,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:32:22,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:22,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:32:22,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:32:22,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:32:22,170 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:32:22,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:32:22,285 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:32:22,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:32:22,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-16 16:32:22,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:32:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-16 16:32:22,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:32:22,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-09-16 16:32:22,304 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 16:32:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 16:32:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-16 16:32:22,305 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 7 states. [2019-09-16 16:32:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:32:22,366 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2019-09-16 16:32:22,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 16:32:22,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2019-09-16 16:32:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:32:22,369 INFO L225 Difference]: With dead ends: 48 [2019-09-16 16:32:22,369 INFO L226 Difference]: Without dead ends: 35 [2019-09-16 16:32:22,370 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:32:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-16 16:32:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-09-16 16:32:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-16 16:32:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-09-16 16:32:22,375 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2019-09-16 16:32:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:32:22,376 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-09-16 16:32:22,376 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 16:32:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-09-16 16:32:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-16 16:32:22,377 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:32:22,377 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:32:22,378 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:32:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:32:22,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102936, now seen corresponding path program 3 times [2019-09-16 16:32:22,378 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:32:22,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:32:22,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:22,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:32:22,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:32:22,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:32:22,474 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:32:22,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-16 16:32:22,608 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-16 16:32:22,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:32:22,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 37 conjunts are in the unsatisfiable core [2019-09-16 16:32:22,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:32:22,733 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-16 16:32:22,734 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:22,743 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:22,744 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:32:22,745 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-09-16 16:32:22,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:32:22,783 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-09-16 16:32:22,783 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:22,790 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:22,791 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:32:22,791 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:11 [2019-09-16 16:32:22,865 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-16 16:32:22,866 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:22,868 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:22,868 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:32:22,869 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-16 16:32:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-16 16:32:22,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:32:22,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-09-16 16:32:22,897 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-16 16:32:22,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-16 16:32:22,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-16 16:32:22,899 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 15 states. [2019-09-16 16:32:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:32:23,374 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2019-09-16 16:32:23,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-16 16:32:23,375 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2019-09-16 16:32:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:32:23,376 INFO L225 Difference]: With dead ends: 53 [2019-09-16 16:32:23,376 INFO L226 Difference]: Without dead ends: 40 [2019-09-16 16:32:23,377 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2019-09-16 16:32:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-16 16:32:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-09-16 16:32:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-16 16:32:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-09-16 16:32:23,383 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 27 [2019-09-16 16:32:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:32:23,384 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-09-16 16:32:23,384 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-16 16:32:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-09-16 16:32:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-16 16:32:23,385 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:32:23,385 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:32:23,385 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:32:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:32:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1506888183, now seen corresponding path program 1 times [2019-09-16 16:32:23,386 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:32:23,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:32:23,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:23,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:32:23,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:32:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:23,971 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-09-16 16:32:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 16:32:24,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:32:24,409 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:32:24,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:32:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:32:24,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-16 16:32:24,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:32:24,654 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-16 16:32:24,654 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:24,662 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:24,662 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:32:24,662 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-09-16 16:32:24,767 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-09-16 16:32:24,767 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:24,789 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:24,797 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-09-16 16:32:24,798 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:24,824 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:24,830 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:32:24,844 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:24,866 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:24,867 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 41 [2019-09-16 16:32:24,868 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:24,902 INFO L567 ElimStorePlain]: treesize reduction 16, result has 72.4 percent of original size [2019-09-16 16:32:24,903 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-16 16:32:24,904 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:76, output treesize:32 [2019-09-16 16:32:24,984 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:24,985 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 38 [2019-09-16 16:32:24,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:24,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:24,991 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:32:25,048 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.2 percent of original size [2019-09-16 16:32:25,072 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:25,073 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-09-16 16:32:25,073 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:25,121 INFO L567 ElimStorePlain]: treesize reduction 16, result has 80.2 percent of original size [2019-09-16 16:32:25,136 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:25,137 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-09-16 16:32:25,138 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-16 16:32:25,172 INFO L567 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2019-09-16 16:32:25,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:25,176 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-16 16:32:25,176 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:66, output treesize:50 [2019-09-16 16:32:25,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:25,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:25,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:25,466 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_$Pointer$.offset_18|, |v_#memory_$Pointer$.base_18|, |v_#memory_int_25|]} [2019-09-16 16:32:25,469 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:32:25,503 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:25,507 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-16 16:32:25,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:25,541 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-16 16:32:25,542 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2019-09-16 16:32:25,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:32:25,549 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-16 16:32:25,550 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-16 16:32:25,550 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_8]} [2019-09-16 16:32:25,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:32:25,755 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-16 16:32:25,761 INFO L168 Benchmark]: Toolchain (without parser) took 6175.83 ms. Allocated memory was 132.1 MB in the beginning and 325.6 MB in the end (delta: 193.5 MB). Free memory was 85.6 MB in the beginning and 239.4 MB in the end (delta: -153.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2019-09-16 16:32:25,762 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 132.1 MB. Free memory was 105.2 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:32:25,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.25 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 85.4 MB in the beginning and 162.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:32:25,763 INFO L168 Benchmark]: Boogie Preprocessor took 60.42 ms. Allocated memory is still 198.7 MB. Free memory was 162.4 MB in the beginning and 159.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-09-16 16:32:25,764 INFO L168 Benchmark]: RCFGBuilder took 660.13 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 116.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:32:25,765 INFO L168 Benchmark]: TraceAbstraction took 4795.09 ms. Allocated memory was 198.7 MB in the beginning and 325.6 MB in the end (delta: 126.9 MB). Free memory was 116.5 MB in the beginning and 239.4 MB in the end (delta: -123.0 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2019-09-16 16:32:25,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 132.1 MB. Free memory was 105.2 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.25 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 85.4 MB in the beginning and 162.4 MB in the end (delta: -77.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.42 ms. Allocated memory is still 198.7 MB. Free memory was 162.4 MB in the beginning and 159.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 660.13 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 116.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4795.09 ms. Allocated memory was 198.7 MB in the beginning and 325.6 MB in the end (delta: 126.9 MB). Free memory was 116.5 MB in the beginning and 239.4 MB in the end (delta: -123.0 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...