/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:28:14,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:28:14,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:28:14,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:28:14,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:28:14,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:28:14,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:28:14,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:28:14,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:28:14,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:28:14,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:28:14,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:28:14,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:28:14,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:28:14,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:28:14,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:28:14,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:28:14,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:28:14,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:28:14,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:28:14,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:28:14,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:28:14,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:28:14,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:28:14,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:28:14,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:28:14,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:28:14,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:28:14,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:28:14,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:28:14,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:28:14,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:28:14,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:28:14,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:28:14,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:28:14,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:28:14,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:28:14,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:28:14,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:28:14,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:28:14,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:28:14,646 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 [2020-07-21 16:28:14,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:28:14,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:28:14,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:28:14,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:28:14,662 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:28:14,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:28:14,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:28:14,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:28:14,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:28:14,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:28:14,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:28:14,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:28:14,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:28:14,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:28:14,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:28:14,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:28:14,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:28:14,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:28:14,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:28:14,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:28:14,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:28:14,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:28:14,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:28:14,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:28:14,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:28:14,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:28:14,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:14,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:28:14,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:28:14,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 -> 2 [2020-07-21 16:28:14,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:28:14,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:28:14,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:28:14,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:28:14,991 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:28:14,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-07-21 16:28:15,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc9c373dc/76818766a8f54e74af7e28e2f518ed99/FLAG67d0cc0a3 [2020-07-21 16:28:15,544 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:28:15,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-07-21 16:28:15,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc9c373dc/76818766a8f54e74af7e28e2f518ed99/FLAG67d0cc0a3 [2020-07-21 16:28:15,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc9c373dc/76818766a8f54e74af7e28e2f518ed99 [2020-07-21 16:28:15,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:28:15,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:28:15,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:28:15,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:28:15,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:28:15,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:28:15" (1/1) ... [2020-07-21 16:28:15,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c63707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:15, skipping insertion in model container [2020-07-21 16:28:15,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:28:15" (1/1) ... [2020-07-21 16:28:15,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:28:15,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:28:16,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:28:16,326 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:28:16,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:28:16,433 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:28:16,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16 WrapperNode [2020-07-21 16:28:16,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:28:16,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:28:16,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:28:16,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:28:16,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (1/1) ... [2020-07-21 16:28:16,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:28:16,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:28:16,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:28:16,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:28:16,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (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 [2020-07-21 16:28:16,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:28:16,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:28:16,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 16:28:16,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 16:28:16,561 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-21 16:28:16,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-21 16:28:16,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-07-21 16:28:16,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-07-21 16:28:16,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:28:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:28:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:28:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 16:28:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 16:28:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:28:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:28:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:28:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:28:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:28:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:28:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:28:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:28:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:28:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:28:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:28:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:28:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:28:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:28:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:28:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:28:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:28:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:28:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:28:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:28:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:28:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:28:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:28:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:28:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:28:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:28:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:28:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:28:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:28:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:28:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:28:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:28:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:28:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:28:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:28:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:28:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 16:28:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:28:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:28:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:28:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 16:28:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:28:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:28:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 16:28:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:28:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:28:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 16:28:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:28:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:28:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:28:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:28:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:28:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:28:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:28:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:28:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:28:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:28:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:28:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-07-21 16:28:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:28:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-07-21 16:28:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:28:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:28:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:28:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:28:16,924 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-21 16:28:17,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:28:17,074 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 16:28:17,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:28:17 BoogieIcfgContainer [2020-07-21 16:28:17,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:28:17,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:28:17,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:28:17,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:28:17,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:28:15" (1/3) ... [2020-07-21 16:28:17,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c99a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:28:17, skipping insertion in model container [2020-07-21 16:28:17,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:28:16" (2/3) ... [2020-07-21 16:28:17,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c99a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:28:17, skipping insertion in model container [2020-07-21 16:28:17,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:28:17" (3/3) ... [2020-07-21 16:28:17,087 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-07-21 16:28:17,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:28:17,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:28:17,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:28:17,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:28:17,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:28:17,144 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:28:17,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:28:17,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:28:17,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:28:17,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:28:17,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:28:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-21 16:28:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 16:28:17,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:17,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:28:17,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:17,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1666427650, now seen corresponding path program 1 times [2020-07-21 16:28:17,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:17,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60781119] [2020-07-21 16:28:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:17,360 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:17,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:17,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:28:17,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:28:17,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:28:17,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60781119] [2020-07-21 16:28:17,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:28:17,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:28:17,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594189574] [2020-07-21 16:28:17,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:28:17,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:17,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:28:17,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:28:17,446 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-07-21 16:28:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:17,490 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2020-07-21 16:28:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:28:17,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 16:28:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:17,502 INFO L225 Difference]: With dead ends: 73 [2020-07-21 16:28:17,502 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 16:28:17,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:28:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 16:28:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-21 16:28:17,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-21 16:28:17,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-07-21 16:28:17,559 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-07-21 16:28:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:17,560 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-07-21 16:28:17,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:28:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-21 16:28:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 16:28:17,562 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:17,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:28:17,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:17,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:17,777 INFO L82 PathProgramCache]: Analyzing trace with hash -29727073, now seen corresponding path program 1 times [2020-07-21 16:28:17,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:17,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532852758] [2020-07-21 16:28:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:17,878 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:17,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:17,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:28:17,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:28:17,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:28:17,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532852758] [2020-07-21 16:28:17,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:28:17,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:28:17,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833830740] [2020-07-21 16:28:17,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:28:17,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:17,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:28:17,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:28:17,933 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-07-21 16:28:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:17,982 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-21 16:28:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:28:17,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-21 16:28:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:17,984 INFO L225 Difference]: With dead ends: 45 [2020-07-21 16:28:17,984 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 16:28:17,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:28:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 16:28:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-21 16:28:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 16:28:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 16:28:17,992 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2020-07-21 16:28:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:17,992 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 16:28:17,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:28:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 16:28:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 16:28:17,993 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:17,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:28:18,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:18,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:18,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1680455870, now seen corresponding path program 1 times [2020-07-21 16:28:18,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:18,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680479982] [2020-07-21 16:28:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:18,302 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:28:18,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:18,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 16:28:18,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:28:18,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:28:18,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680479982] [2020-07-21 16:28:18,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:28:18,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 16:28:18,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533022553] [2020-07-21 16:28:18,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 16:28:18,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:18,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 16:28:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 16:28:18,385 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-07-21 16:28:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:18,495 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-07-21 16:28:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 16:28:18,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-07-21 16:28:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:18,497 INFO L225 Difference]: With dead ends: 39 [2020-07-21 16:28:18,497 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 16:28:18,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-07-21 16:28:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 16:28:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-21 16:28:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 16:28:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-21 16:28:18,505 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 28 [2020-07-21 16:28:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:18,506 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-21 16:28:18,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 16:28:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-21 16:28:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 16:28:18,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:18,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:28:18,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:18,723 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1808388506, now seen corresponding path program 1 times [2020-07-21 16:28:18,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:18,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654522026] [2020-07-21 16:28:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:18,842 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:18,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:18,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:28:18,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:28:18,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:28:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:28:19,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654522026] [2020-07-21 16:28:19,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:28:19,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-21 16:28:19,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086422899] [2020-07-21 16:28:19,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 16:28:19,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:19,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 16:28:19,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:28:19,040 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 9 states. [2020-07-21 16:28:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:19,114 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-07-21 16:28:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:28:19,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-21 16:28:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:19,117 INFO L225 Difference]: With dead ends: 50 [2020-07-21 16:28:19,117 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 16:28:19,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-07-21 16:28:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 16:28:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-07-21 16:28:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 16:28:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-07-21 16:28:19,129 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2020-07-21 16:28:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:19,129 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-07-21 16:28:19,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 16:28:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-07-21 16:28:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 16:28:19,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:19,131 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 16:28:19,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:19,332 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:19,333 INFO L82 PathProgramCache]: Analyzing trace with hash 560900285, now seen corresponding path program 2 times [2020-07-21 16:28:19,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:19,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124914266] [2020-07-21 16:28:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:19,429 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:19,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:19,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:28:19,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:28:19,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:28:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:28:19,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124914266] [2020-07-21 16:28:19,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:28:19,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-21 16:28:19,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938934683] [2020-07-21 16:28:19,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 16:28:19,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:19,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 16:28:19,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-21 16:28:19,602 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 10 states. [2020-07-21 16:28:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:19,669 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-07-21 16:28:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:28:19,670 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-07-21 16:28:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:19,671 INFO L225 Difference]: With dead ends: 53 [2020-07-21 16:28:19,671 INFO L226 Difference]: Without dead ends: 38 [2020-07-21 16:28:19,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-21 16:28:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-21 16:28:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-07-21 16:28:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 16:28:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-07-21 16:28:19,682 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 32 [2020-07-21 16:28:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:19,683 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-07-21 16:28:19,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 16:28:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-07-21 16:28:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 16:28:19,687 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:19,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:28:19,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:19,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 991320762, now seen corresponding path program 3 times [2020-07-21 16:28:19,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:19,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072912622] [2020-07-21 16:28:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:19,999 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:19,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:20,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-21 16:28:20,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:20,105 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 [2020-07-21 16:28:20,106 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:28:20,118 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:28:20,122 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 [2020-07-21 16:28:20,122 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:28:20,130 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:28:20,132 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:28:20,132 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:16 [2020-07-21 16:28:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:28:20,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:28:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:28:20,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072912622] [2020-07-21 16:28:20,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:28:20,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2020-07-21 16:28:20,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407186921] [2020-07-21 16:28:20,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 16:28:20,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:20,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 16:28:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-07-21 16:28:20,747 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 21 states. [2020-07-21 16:28:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:23,067 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-07-21 16:28:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 16:28:23,068 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-07-21 16:28:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:23,069 INFO L225 Difference]: With dead ends: 44 [2020-07-21 16:28:23,069 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 16:28:23,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-07-21 16:28:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 16:28:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 16:28:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 16:28:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-07-21 16:28:23,079 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 35 [2020-07-21 16:28:23,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:23,080 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-07-21 16:28:23,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 16:28:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-07-21 16:28:23,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 16:28:23,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:23,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-07-21 16:28:23,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:23,295 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1265881822, now seen corresponding path program 4 times [2020-07-21 16:28:23,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:23,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063467697] [2020-07-21 16:28:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:23,423 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:23,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:28:23,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 16:28:23,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:28:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:28:23,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:28:23,684 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 16:28:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:28:23,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063467697] [2020-07-21 16:28:23,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:28:23,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2020-07-21 16:28:23,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393333351] [2020-07-21 16:28:23,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 16:28:23,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:28:23,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 16:28:23,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-07-21 16:28:23,827 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 20 states. [2020-07-21 16:28:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:28:24,274 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-21 16:28:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 16:28:24,275 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 36 [2020-07-21 16:28:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:28:24,279 INFO L225 Difference]: With dead ends: 80 [2020-07-21 16:28:24,279 INFO L226 Difference]: Without dead ends: 76 [2020-07-21 16:28:24,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2020-07-21 16:28:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-21 16:28:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-07-21 16:28:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 16:28:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2020-07-21 16:28:24,299 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 36 [2020-07-21 16:28:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:28:24,299 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2020-07-21 16:28:24,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 16:28:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2020-07-21 16:28:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 16:28:24,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:28:24,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:28:24,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:24,512 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:28:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:28:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1775282106, now seen corresponding path program 5 times [2020-07-21 16:28:24,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:28:24,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268778403] [2020-07-21 16:28:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:24,636 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:28:24,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:28:24,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:28:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:28:24,657 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:28:24,687 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:28:24,687 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:28:24,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:28:24,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:28:24 BoogieIcfgContainer [2020-07-21 16:28:24,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:28:24,940 INFO L168 Benchmark]: Toolchain (without parser) took 9089.78 ms. Allocated memory was 145.2 MB in the beginning and 283.6 MB in the end (delta: 138.4 MB). Free memory was 101.1 MB in the beginning and 231.1 MB in the end (delta: -130.0 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:28:24,941 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 16:28:24,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.71 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 170.3 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:28:24,943 INFO L168 Benchmark]: Boogie Preprocessor took 59.66 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 167.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:28:24,943 INFO L168 Benchmark]: RCFGBuilder took 583.78 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 124.4 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:28:24,944 INFO L168 Benchmark]: TraceAbstraction took 7858.94 ms. Allocated memory was 203.4 MB in the beginning and 283.6 MB in the end (delta: 80.2 MB). Free memory was 123.7 MB in the beginning and 231.1 MB in the end (delta: -107.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:28:24,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.71 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 170.3 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.66 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 167.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 583.78 ms. Allocated memory is still 203.4 MB. Free memory was 167.3 MB in the beginning and 124.4 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7858.94 ms. Allocated memory was 203.4 MB in the beginning and 283.6 MB in the end (delta: 80.2 MB). Free memory was 123.7 MB in the beginning and 231.1 MB in the end (delta: -107.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; VAL [len=2] [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, len=2, len < 32 && __VERIFIER_nondet_int()=0] [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) VAL [\old(len)=3] [L564] SLL head = ((void *)0); VAL [\old(len)=3, head={0:0}, len=3] [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L570] new_head->next = head [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={-1:0}, len=2, 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)=3, head={-1:0}, len=2, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={-1:0}, len=2, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L570] new_head->next = head [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={18458:0}, new_head={18458:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={-2:0}, len=1, malloc(sizeof(struct node))={18458:0}, new_head={18458:0}] [L570] new_head->next = head [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={18458:0}, len=0, malloc(sizeof(struct node))={18458:0}, new_head={18458:0}] [L565] COND FALSE !(len > 0) VAL [\old(len)=3, head={18458:0}, len=0, malloc(sizeof(struct node))={18458:0}, new_head={18458:0}] [L574] return head; VAL [\old(len)=3, \result={18458:0}, head={18458:0}, len=0, malloc(sizeof(struct node))={18458:0}, new_head={18458:0}] [L596] RET, EXPR sll_create(len + 1) VAL [len=2, sll_create(len + 1)={18458:0}] [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) VAL [head={18458:0}] [L577] int len = 0; VAL [head={18458:0}, head={18458:0}, len=0] [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) VAL [head={18458:0}, head={0:0}, len=3] [L582] return len; VAL [\result=3, head={18458:0}, head={0:0}, len=3] [L597] RET, EXPR sll_length(s) VAL [len=2, s={18458:0}, sll_length(s)=3] [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() VAL [len=2, s={18458:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 196 SDtfs, 185 SDslu, 991 SDs, 0 SdLazy, 589 SolverSat, 50 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 262 SyntacticMatches, 10 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 245 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 329 ConstructedInterpolants, 6 QuantifiedInterpolants, 42643 SizeOfPredicates, 29 NumberOfNonLiveVariables, 862 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 23/73 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...