/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:40:01,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:40:01,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:40:01,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:40:01,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:40:01,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:40:01,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:40:01,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:40:01,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:40:01,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:40:01,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:40:01,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:40:01,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:40:01,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:40:01,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:40:01,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:40:01,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:40:01,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:40:01,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:40:01,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:40:01,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:40:01,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:40:01,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:40:01,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:40:01,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:40:01,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:40:01,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:40:01,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:40:01,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:40:01,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:40:01,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:40:01,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:40:01,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:40:01,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:40:01,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:40:01,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:40:01,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:40:01,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:40:01,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:40:01,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:40:01,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:40:01,525 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 [2020-07-20 03:40:01,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:40:01,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:40:01,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:40:01,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:40:01,543 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:40:01,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:40:01,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:40:01,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:40:01,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:40:01,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:40:01,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:40:01,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:40:01,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:40:01,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:40:01,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:40:01,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:40:01,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:40:01,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:40:01,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:40:01,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:40:01,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:40:01,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:40:01,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:40:01,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:40:01,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:40:01,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:40:01,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:40:01,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:40:01,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:40:01,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:40:01,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:40:01,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:40:01,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:40:01,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:40:01,875 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:40:01,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-07-20 03:40:01,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/127de2fde/219167f03e8a48f085d111d4fd304928/FLAG93b04bcc6 [2020-07-20 03:40:02,599 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:40:02,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-07-20 03:40:02,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/127de2fde/219167f03e8a48f085d111d4fd304928/FLAG93b04bcc6 [2020-07-20 03:40:02,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/127de2fde/219167f03e8a48f085d111d4fd304928 [2020-07-20 03:40:02,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:40:02,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:40:02,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:40:02,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:40:02,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:40:02,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:40:02" (1/1) ... [2020-07-20 03:40:02,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b90e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:02, skipping insertion in model container [2020-07-20 03:40:02,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:40:02" (1/1) ... [2020-07-20 03:40:02,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:40:02,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:40:03,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:40:03,427 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:40:03,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:40:03,540 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:40:03,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03 WrapperNode [2020-07-20 03:40:03,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:40:03,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:40:03,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:40:03,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:40:03,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (1/1) ... [2020-07-20 03:40:03,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:40:03,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:40:03,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:40:03,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:40:03,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (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 [2020-07-20 03:40:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:40:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:40:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 03:40:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 03:40:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-20 03:40:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-20 03:40:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-07-20 03:40:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-07-20 03:40:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-07-20 03:40:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-07-20 03:40:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:40:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:40:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:40:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 03:40:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 03:40:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 03:40:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 03:40:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 03:40:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 03:40:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 03:40:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 03:40:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 03:40:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 03:40:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 03:40:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 03:40:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 03:40:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 03:40:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 03:40:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 03:40:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 03:40:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 03:40:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 03:40:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 03:40:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 03:40:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 03:40:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 03:40:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 03:40:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 03:40:03,706 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 03:40:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 03:40:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 03:40:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 03:40:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 03:40:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 03:40:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 03:40:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 03:40:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 03:40:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 03:40:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 03:40:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 03:40:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 03:40:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 03:40:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 03:40:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 03:40:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 03:40:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 03:40:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:40:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 03:40:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 03:40:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 03:40:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 03:40:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 03:40:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 03:40:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 03:40:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 03:40:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 03:40:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 03:40:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 03:40:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 03:40:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 03:40:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 03:40:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 03:40:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 03:40:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-07-20 03:40:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 03:40:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-07-20 03:40:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:40:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-07-20 03:40:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-07-20 03:40:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:40:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:40:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 03:40:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:40:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:40:04,088 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-20 03:40:04,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:40:04,348 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 03:40:04,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:40:04 BoogieIcfgContainer [2020-07-20 03:40:04,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:40:04,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:40:04,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:40:04,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:40:04,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:40:02" (1/3) ... [2020-07-20 03:40:04,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41191f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:40:04, skipping insertion in model container [2020-07-20 03:40:04,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:40:03" (2/3) ... [2020-07-20 03:40:04,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41191f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:40:04, skipping insertion in model container [2020-07-20 03:40:04,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:40:04" (3/3) ... [2020-07-20 03:40:04,362 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-07-20 03:40:04,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:40:04,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:40:04,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:40:04,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:40:04,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:40:04,426 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:40:04,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:40:04,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:40:04,426 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:40:04,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:40:04,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:40:04,448 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-07-20 03:40:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 03:40:04,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:04,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:04,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:04,466 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-07-20 03:40:04,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:04,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347369663] [2020-07-20 03:40:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 03:40:04,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347369663] [2020-07-20 03:40:04,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:40:04,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:40:04,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605054148] [2020-07-20 03:40:04,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:40:04,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:04,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:40:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:40:04,816 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-07-20 03:40:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:05,094 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-07-20 03:40:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:40:05,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-20 03:40:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:05,106 INFO L225 Difference]: With dead ends: 136 [2020-07-20 03:40:05,107 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 03:40:05,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:40:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 03:40:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-07-20 03:40:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 03:40:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-07-20 03:40:05,160 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-07-20 03:40:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:05,161 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-07-20 03:40:05,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:40:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-07-20 03:40:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 03:40:05,164 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:05,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:05,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:40:05,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:05,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:05,166 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-07-20 03:40:05,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:05,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894216425] [2020-07-20 03:40:05,167 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:40:05,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894216425] [2020-07-20 03:40:05,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362361109] [2020-07-20 03:40:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c233bd6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:05,676 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c233bd6 issued 4 check-sat command(s) [2020-07-20 03:40:05,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:05,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 03:40:05,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:05,800 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:05,805 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:05,835 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:40:05,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 03:40:05,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17 [2020-07-20 03:40:05,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843729167] [2020-07-20 03:40:05,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 03:40:05,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:05,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 03:40:05,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-07-20 03:40:05,870 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 9 states. [2020-07-20 03:40:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:06,072 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2020-07-20 03:40:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 03:40:06,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-07-20 03:40:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:06,076 INFO L225 Difference]: With dead ends: 116 [2020-07-20 03:40:06,076 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 03:40:06,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-07-20 03:40:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 03:40:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-07-20 03:40:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 03:40:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-07-20 03:40:06,111 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 44 [2020-07-20 03:40:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:06,112 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-07-20 03:40:06,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 03:40:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-07-20 03:40:06,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 03:40:06,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:06,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:06,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 03:40:06,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:06,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:06,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1366907664, now seen corresponding path program 1 times [2020-07-20 03:40:06,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:06,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252004300] [2020-07-20 03:40:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:40:06,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252004300] [2020-07-20 03:40:06,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737099839] [2020-07-20 03:40:06,623 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d063cdd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:06,768 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d063cdd issued 3 check-sat command(s) [2020-07-20 03:40:06,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:06,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 03:40:06,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:40:06,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 03:40:06,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 15 [2020-07-20 03:40:06,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156071601] [2020-07-20 03:40:06,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 03:40:06,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 03:40:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-20 03:40:06,847 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 9 states. [2020-07-20 03:40:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:06,952 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2020-07-20 03:40:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 03:40:06,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-07-20 03:40:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:06,955 INFO L225 Difference]: With dead ends: 108 [2020-07-20 03:40:06,955 INFO L226 Difference]: Without dead ends: 62 [2020-07-20 03:40:06,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-20 03:40:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-20 03:40:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-07-20 03:40:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 03:40:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-07-20 03:40:06,967 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 44 [2020-07-20 03:40:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:06,967 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-07-20 03:40:06,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 03:40:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-07-20 03:40:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 03:40:06,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:06,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:07,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:07,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:07,184 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-07-20 03:40:07,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:07,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885188472] [2020-07-20 03:40:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 03:40:07,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885188472] [2020-07-20 03:40:07,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226641481] [2020-07-20 03:40:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@653e851a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:07,494 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@653e851a issued 3 check-sat command(s) [2020-07-20 03:40:07,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:07,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 03:40:07,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:07,762 INFO L384 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 16 treesize of output 8 [2020-07-20 03:40:07,764 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:07,768 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:07,768 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:40:07,769 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-20 03:40:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:40:07,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 03:40:07,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2020-07-20 03:40:07,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786692573] [2020-07-20 03:40:07,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 03:40:07,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:07,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 03:40:07,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-07-20 03:40:07,849 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 12 states. [2020-07-20 03:40:16,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:16,287 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2020-07-20 03:40:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 03:40:16,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-07-20 03:40:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:16,289 INFO L225 Difference]: With dead ends: 112 [2020-07-20 03:40:16,290 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 03:40:16,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-07-20 03:40:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 03:40:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2020-07-20 03:40:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 03:40:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-07-20 03:40:16,305 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 48 [2020-07-20 03:40:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:16,306 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-07-20 03:40:16,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 03:40:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-07-20 03:40:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 03:40:16,307 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:16,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:16,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:16,510 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:16,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:16,511 INFO L82 PathProgramCache]: Analyzing trace with hash 880198107, now seen corresponding path program 1 times [2020-07-20 03:40:16,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:16,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398513747] [2020-07-20 03:40:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 03:40:16,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398513747] [2020-07-20 03:40:16,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860484628] [2020-07-20 03:40:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23e8e39f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:16,847 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23e8e39f issued 3 check-sat command(s) [2020-07-20 03:40:16,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:16,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 03:40:16,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:16,938 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:16,939 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:16,975 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 03:40:17,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:40:17,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2020-07-20 03:40:17,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540981432] [2020-07-20 03:40:17,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 03:40:17,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:17,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 03:40:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-20 03:40:17,007 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 17 states. [2020-07-20 03:40:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:17,989 INFO L93 Difference]: Finished difference Result 175 states and 217 transitions. [2020-07-20 03:40:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 03:40:17,992 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-07-20 03:40:17,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:17,994 INFO L225 Difference]: With dead ends: 175 [2020-07-20 03:40:17,994 INFO L226 Difference]: Without dead ends: 110 [2020-07-20 03:40:17,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-07-20 03:40:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-20 03:40:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2020-07-20 03:40:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 03:40:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2020-07-20 03:40:18,011 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 49 [2020-07-20 03:40:18,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:18,011 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2020-07-20 03:40:18,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 03:40:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2020-07-20 03:40:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 03:40:18,012 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:18,013 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:18,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:18,227 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:18,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 2 times [2020-07-20 03:40:18,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:18,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267916293] [2020-07-20 03:40:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 03:40:18,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267916293] [2020-07-20 03:40:18,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:40:18,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 03:40:18,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833314553] [2020-07-20 03:40:18,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 03:40:18,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:18,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 03:40:18,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 03:40:18,406 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 9 states. [2020-07-20 03:40:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:18,798 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2020-07-20 03:40:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 03:40:18,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-07-20 03:40:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:18,801 INFO L225 Difference]: With dead ends: 185 [2020-07-20 03:40:18,801 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 03:40:18,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-07-20 03:40:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 03:40:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2020-07-20 03:40:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-20 03:40:18,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2020-07-20 03:40:18,833 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 53 [2020-07-20 03:40:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:18,833 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2020-07-20 03:40:18,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 03:40:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2020-07-20 03:40:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 03:40:18,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:18,834 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:18,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:40:18,835 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:18,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:18,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-07-20 03:40:18,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:18,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166105750] [2020-07-20 03:40:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 03:40:19,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166105750] [2020-07-20 03:40:19,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619735694] [2020-07-20 03:40:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b856046 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:19,198 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b856046 issued 3 check-sat command(s) [2020-07-20 03:40:19,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:19,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 03:40:19,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:19,252 INFO L384 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 11 treesize of output 7 [2020-07-20 03:40:19,252 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:19,257 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:19,258 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:40:19,259 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2020-07-20 03:40:19,502 INFO L384 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 31 treesize of output 19 [2020-07-20 03:40:19,503 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:19,510 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:19,511 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 03:40:19,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:23 [2020-07-20 03:40:21,572 WARN L860 $PredicateComparison]: unable to prove that (exists ((|main_~#s~0.base| Int) (|main_~#s~0.offset| Int)) (not (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|)) 0) 0))) is different from true [2020-07-20 03:40:25,622 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 03:40:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:40:25,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:40:25,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-07-20 03:40:25,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023387870] [2020-07-20 03:40:25,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 03:40:25,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:25,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 03:40:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=542, Unknown=2, NotChecked=46, Total=650 [2020-07-20 03:40:25,815 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand 26 states. [2020-07-20 03:40:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:29,871 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-07-20 03:40:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 03:40:29,872 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 53 [2020-07-20 03:40:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:29,874 INFO L225 Difference]: With dead ends: 141 [2020-07-20 03:40:29,874 INFO L226 Difference]: Without dead ends: 134 [2020-07-20 03:40:29,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=198, Invalid=1444, Unknown=2, NotChecked=78, Total=1722 [2020-07-20 03:40:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-20 03:40:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 104. [2020-07-20 03:40:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 03:40:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2020-07-20 03:40:29,894 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 53 [2020-07-20 03:40:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:29,894 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2020-07-20 03:40:29,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 03:40:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2020-07-20 03:40:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 03:40:29,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:29,896 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:30,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-20 03:40:30,122 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:30,123 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-07-20 03:40:30,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:30,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441714373] [2020-07-20 03:40:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 03:40:30,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441714373] [2020-07-20 03:40:30,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490660235] [2020-07-20 03:40:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48d5fed9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:30,626 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@48d5fed9 issued 4 check-sat command(s) [2020-07-20 03:40:30,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:30,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 03:40:30,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:30,767 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:30,812 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:30,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:31,016 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:31,086 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 03:40:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 03:40:31,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:40:31,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 29 [2020-07-20 03:40:31,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740154460] [2020-07-20 03:40:31,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 03:40:31,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:31,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 03:40:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2020-07-20 03:40:31,092 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand 29 states. [2020-07-20 03:40:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:33,722 INFO L93 Difference]: Finished difference Result 204 states and 273 transitions. [2020-07-20 03:40:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 03:40:33,727 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-07-20 03:40:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:33,730 INFO L225 Difference]: With dead ends: 204 [2020-07-20 03:40:33,730 INFO L226 Difference]: Without dead ends: 200 [2020-07-20 03:40:33,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=378, Invalid=2702, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 03:40:33,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-20 03:40:33,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-07-20 03:40:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-07-20 03:40:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2020-07-20 03:40:33,760 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 54 [2020-07-20 03:40:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:33,760 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2020-07-20 03:40:33,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 03:40:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2020-07-20 03:40:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 03:40:33,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:33,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:33,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:33,973 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:33,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:33,974 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-07-20 03:40:33,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:33,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127878846] [2020-07-20 03:40:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 03:40:34,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127878846] [2020-07-20 03:40:34,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78735105] [2020-07-20 03:40:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e7f3811 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:34,593 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e7f3811 issued 3 check-sat command(s) [2020-07-20 03:40:34,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:34,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-20 03:40:34,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:34,615 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-20 03:40:34,615 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,623 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,623 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-07-20 03:40:34,661 INFO L384 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 [2020-07-20 03:40:34,661 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,670 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,675 INFO L384 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 [2020-07-20 03:40:34,675 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,687 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,688 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,688 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2020-07-20 03:40:34,742 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,743 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2020-07-20 03:40:34,744 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,760 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,760 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,760 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:25 [2020-07-20 03:40:34,807 INFO L384 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 19 treesize of output 18 [2020-07-20 03:40:34,809 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,828 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,835 INFO L384 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 19 treesize of output 18 [2020-07-20 03:40:34,835 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,849 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:40:34,850 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:40:34,851 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2020-07-20 03:40:36,913 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:40:36,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:40:36,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2020-07-20 03:40:36,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516721526] [2020-07-20 03:40:36,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 03:40:36,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:36,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 03:40:36,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-07-20 03:40:36,963 INFO L87 Difference]: Start difference. First operand 139 states and 175 transitions. Second operand 30 states. [2020-07-20 03:40:49,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:49,301 INFO L93 Difference]: Finished difference Result 239 states and 301 transitions. [2020-07-20 03:40:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 03:40:49,302 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-07-20 03:40:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:49,304 INFO L225 Difference]: With dead ends: 239 [2020-07-20 03:40:49,304 INFO L226 Difference]: Without dead ends: 225 [2020-07-20 03:40:49,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 03:40:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-20 03:40:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 199. [2020-07-20 03:40:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-07-20 03:40:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 252 transitions. [2020-07-20 03:40:49,333 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 252 transitions. Word has length 55 [2020-07-20 03:40:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:49,333 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 252 transitions. [2020-07-20 03:40:49,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 03:40:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 252 transitions. [2020-07-20 03:40:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 03:40:49,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:49,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:49,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:49,547 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-07-20 03:40:49,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:49,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753603174] [2020-07-20 03:40:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:40:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 03:40:49,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753603174] [2020-07-20 03:40:49,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103539136] [2020-07-20 03:40:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5da87679 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:40:49,918 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5da87679 issued 4 check-sat command(s) [2020-07-20 03:40:49,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:40:49,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 03:40:49,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:40:50,020 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:50,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:50,052 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 03:40:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 03:40:50,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:40:50,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-07-20 03:40:50,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339880586] [2020-07-20 03:40:50,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 03:40:50,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:40:50,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 03:40:50,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-07-20 03:40:50,084 INFO L87 Difference]: Start difference. First operand 199 states and 252 transitions. Second operand 18 states. [2020-07-20 03:40:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:40:51,472 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2020-07-20 03:40:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 03:40:51,473 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-07-20 03:40:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:40:51,476 INFO L225 Difference]: With dead ends: 379 [2020-07-20 03:40:51,476 INFO L226 Difference]: Without dead ends: 249 [2020-07-20 03:40:51,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2020-07-20 03:40:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-20 03:40:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 196. [2020-07-20 03:40:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-07-20 03:40:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 248 transitions. [2020-07-20 03:40:51,528 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 248 transitions. Word has length 57 [2020-07-20 03:40:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:40:51,528 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 248 transitions. [2020-07-20 03:40:51,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 03:40:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 248 transitions. [2020-07-20 03:40:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 03:40:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:40:51,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:40:51,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 03:40:51,750 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:40:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:40:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-07-20 03:40:51,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:40:51,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424669697] [2020-07-20 03:40:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b29c7a6 [2020-07-20 03:40:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:40:51,774 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:40:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:40:51,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:40:51,840 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:40:51,841 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:40:51,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 03:40:51,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:40:51 BoogieIcfgContainer [2020-07-20 03:40:51,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:40:51,902 INFO L168 Benchmark]: Toolchain (without parser) took 49023.52 ms. Allocated memory was 136.3 MB in the beginning and 401.6 MB in the end (delta: 265.3 MB). Free memory was 98.6 MB in the beginning and 213.6 MB in the end (delta: -115.0 MB). Peak memory consumption was 150.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:40:51,902 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:40:51,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.43 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 98.2 MB in the beginning and 165.9 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:40:51,904 INFO L168 Benchmark]: Boogie Preprocessor took 69.06 ms. Allocated memory is still 200.3 MB. Free memory was 165.9 MB in the beginning and 162.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:40:51,904 INFO L168 Benchmark]: RCFGBuilder took 742.19 ms. Allocated memory is still 200.3 MB. Free memory was 162.9 MB in the beginning and 111.7 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:40:51,905 INFO L168 Benchmark]: TraceAbstraction took 47545.18 ms. Allocated memory was 200.3 MB in the beginning and 401.6 MB in the end (delta: 201.3 MB). Free memory was 111.0 MB in the beginning and 213.6 MB in the end (delta: -102.5 MB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:40:51,908 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.43 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 98.2 MB in the beginning and 165.9 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.06 ms. Allocated memory is still 200.3 MB. Free memory was 165.9 MB in the beginning and 162.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 742.19 ms. Allocated memory is still 200.3 MB. Free memory was 162.9 MB in the beginning and 111.7 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47545.18 ms. Allocated memory was 200.3 MB in the beginning and 401.6 MB in the end (delta: 201.3 MB). Free memory was 111.0 MB in the beginning and 213.6 MB in the end (delta: -102.5 MB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L609] int len = from; VAL [\old(from)=2, \old(until)=5, from=2, len=2, until=5] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=2, \old(until)=5, __VERIFIER_nondet_int()=0, from=2, len=2, len < until && __VERIFIER_nondet_int()=0, until=5] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; VAL [\old(from)=2, \old(until)=5, \result=2, from=2, len=2, until=5] [L616] RET, EXPR _get_nondet_int(2, 5) VAL [_get_nondet_int(2, 5)=2] [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); VAL [len=2, s={2:0}] [L617] CALL, EXPR sll_create(len) VAL [\old(len)=2] [L564] SLL head = ((void *)0); VAL [\old(len)=2, head={0:0}, len=2] [L565] EXPR len-- VAL [\old(len)=2, head={0:0}, len=1, len--=2] [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L570] new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={-1:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-1:0}, len=0, len--=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={-1:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={-1:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L570] new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={-2:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-2:0}, len=-1, len--=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] COND FALSE !(len-- > 0) [L573] return head; VAL [\old(len)=2, \result={-2:0}, head={-2:0}, len=-1, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L617] RET, EXPR sll_create(len) VAL [len=2, s={2:0}, sll_create(len)={-2:0}] [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L609] int len = from; VAL [\old(from)=0, \old(until)=1, from=0, len=0, until=1] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, __VERIFIER_nondet_int()=3, from=0, len=0, len < until && __VERIFIER_nondet_int()=1, until=1] [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ VAL [\old(from)=0, \old(until)=1, from=0, len=1, until=1] [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, from=0, len=1, len < until && __VERIFIER_nondet_int()=0, until=1] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; VAL [\old(from)=0, \old(until)=1, \result=1, from=0, len=1, until=1] [L618] RET, EXPR _get_nondet_int(0, len - 1) VAL [_get_nondet_int(0, len - 1)=1, len=2, s={2:0}] [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; VAL [i=0, k=1, len=2, s={2:0}] [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, i=0, i < k && __VERIFIER_nondet_int()=0, k=1, len=2, s={2:0}] [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={2:0}] [L625] CALL, EXPR sll_length(s) VAL [head={-2:0}] [L576] int len = 0; VAL [head={-2:0}, head={-2:0}, len=0] [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) VAL [head={-2:0}, head={0:0}, len=2] [L581] return len; VAL [\result=2, head={-2:0}, head={0:0}, len=2] [L625] RET, EXPR sll_length(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={2:0}, sll_length(s)=2] [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() VAL [i=0, k=1, len=2, s={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 585 SDtfs, 911 SDslu, 4121 SDs, 0 SdLazy, 4809 SolverSat, 503 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 24.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 709 GetRequests, 432 SyntacticMatches, 10 SemanticMatches, 267 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 250 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 955 NumberOfCodeBlocks, 898 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 880 ConstructedInterpolants, 37 QuantifiedInterpolants, 320436 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1506 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 136/245 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...