/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 DAGSIZE --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/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:02:03,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:02:03,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:02:03,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:02:03,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:02:03,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:02:03,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:02:03,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:02:03,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:02:03,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:02:03,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:02:03,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:02:03,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:02:03,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:02:03,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:02:03,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:02:03,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:02:03,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:02:03,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:02:03,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:02:03,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:02:03,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:02:03,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:02:03,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:02:03,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 20:02:03,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 20:02:03,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 20:02:03,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 20:02:03,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 20:02:03,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 20:02:03,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 20:02:03,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 20:02:03,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 20:02:03,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 20:02:03,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 20:02:03,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 20:02:03,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 20:02:03,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 20:02:03,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:02:03,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:02:03,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:02:03,515 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 20:02:03,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:02:03,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:02:03,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:02:03,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:02:03,533 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:02:03,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:02:03,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:02:03,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:02:03,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:02:03,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:02:03,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:02:03,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:02:03,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:02:03,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:02:03,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:02:03,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:02:03,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:02:03,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:02:03,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:02:03,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:02:03,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:02:03,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:02:03,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:02:03,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:02:03,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:02:03,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:02:03,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:03,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:02:03,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:02:03,541 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 -> 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 -> 2 [2020-07-21 20:02:03,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:02:03,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:02:03,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:02:03,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:02:03,840 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:02:03,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-07-21 20:02:03,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1abf3bad/d0e3463dfc1f40be9c79ee173996505f/FLAG6b11a63f1 [2020-07-21 20:02:04,496 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:02:04,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-07-21 20:02:04,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1abf3bad/d0e3463dfc1f40be9c79ee173996505f/FLAG6b11a63f1 [2020-07-21 20:02:04,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1abf3bad/d0e3463dfc1f40be9c79ee173996505f [2020-07-21 20:02:04,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:02:04,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:02:04,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:02:04,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:02:04,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:02:04,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:02:04" (1/1) ... [2020-07-21 20:02:04,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f64ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:04, skipping insertion in model container [2020-07-21 20:02:04,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:02:04" (1/1) ... [2020-07-21 20:02:04,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:02:04,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:02:05,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:02:05,321 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:02:05,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:02:05,425 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:02:05,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05 WrapperNode [2020-07-21 20:02:05,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:02:05,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:02:05,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:02:05,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:02:05,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (1/1) ... [2020-07-21 20:02:05,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:02:05,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:02:05,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:02:05,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:02:05,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (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 20:02:05,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:02:05,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:02:05,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:02:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 20:02:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 20:02:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 20:02:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 20:02:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 20:02:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 20:02:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 20:02:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 20:02:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 20:02:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 20:02:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 20:02:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 20:02:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 20:02:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 20:02:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 20:02:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 20:02:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 20:02:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 20:02:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 20:02:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 20:02:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 20:02:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 20:02:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 20:02:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 20:02:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 20:02:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 20:02:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 20:02:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 20:02:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 20:02:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 20:02:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 20:02:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 20:02:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 20:02:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 20:02:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 20:02:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 20:02:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 20:02:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 20:02:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 20:02:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 20:02:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 20:02:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 20:02:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 20:02:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 20:02:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 20:02:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:02:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 20:02:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 20:02:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 20:02:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 20:02:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 20:02:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 20:02:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 20:02:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 20:02:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 20:02:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 20:02:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 20:02:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 20:02:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 20:02:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 20:02:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 20:02:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 20:02:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 20:02:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:02:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:02:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:02:06,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:02:06,205 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-21 20:02:06,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:02:06 BoogieIcfgContainer [2020-07-21 20:02:06,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:02:06,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:02:06,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:02:06,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:02:06,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:02:04" (1/3) ... [2020-07-21 20:02:06,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93bc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:02:06, skipping insertion in model container [2020-07-21 20:02:06,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:05" (2/3) ... [2020-07-21 20:02:06,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93bc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:02:06, skipping insertion in model container [2020-07-21 20:02:06,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:02:06" (3/3) ... [2020-07-21 20:02:06,218 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-07-21 20:02:06,229 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:02:06,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-21 20:02:06,253 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-21 20:02:06,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:02:06,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:02:06,279 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:02:06,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:02:06,280 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:02:06,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:02:06,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:02:06,281 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:02:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-07-21 20:02:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 20:02:06,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:06,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:06,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:06,322 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-07-21 20:02:06,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:06,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914016544] [2020-07-21 20:02:06,333 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 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 20:02:06,578 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:06,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:06,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:02:06,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:06,635 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 20:02:06,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:06,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914016544] [2020-07-21 20:02:06,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:06,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:02:06,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149249788] [2020-07-21 20:02:06,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:02:06,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:06,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:02:06,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:02:06,663 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-07-21 20:02:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:06,784 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-07-21 20:02:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:02:06,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 20:02:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:06,797 INFO L225 Difference]: With dead ends: 122 [2020-07-21 20:02:06,797 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 20:02:06,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:02:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 20:02:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-07-21 20:02:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 20:02:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-07-21 20:02:06,842 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 10 [2020-07-21 20:02:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:06,843 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-07-21 20:02:06,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:02:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-07-21 20:02:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:02:06,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:06,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:07,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:07,058 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-07-21 20:02:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:07,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270933669] [2020-07-21 20:02:07,061 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 20:02:07,184 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:07,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:07,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 20:02:07,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:07,286 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 [2020-07-21 20:02:07,287 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,297 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,298 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,298 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-07-21 20:02:07,391 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,392 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 [2020-07-21 20:02:07,393 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:07,398 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,436 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,443 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_30|], 2=[|v_#memory_int_28|, |v_#memory_int_29|, |v_#memory_$Pointer$.offset_21|, |v_#memory_$Pointer$.base_21|]} [2020-07-21 20:02:07,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:07,464 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2020-07-21 20:02:07,465 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,490 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,497 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:07,519 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,630 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-07-21 20:02:07,631 INFO L350 Elim1Store]: treesize reduction 154, result has 52.9 percent of original size [2020-07-21 20:02:07,632 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 2 case distinctions, treesize of input 133 treesize of output 245 [2020-07-21 20:02:07,633 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,677 INFO L624 ElimStorePlain]: treesize reduction 154, result has 37.4 percent of original size [2020-07-21 20:02:07,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:07,684 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,704 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:07,708 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,718 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,720 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:07,720 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:153, output treesize:23 [2020-07-21 20:02:07,759 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-07-21 20:02:07,761 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,765 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:07,766 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:07,767 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:32, output treesize:3 [2020-07-21 20:02:07,776 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 20:02:07,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:07,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270933669] [2020-07-21 20:02:07,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:07,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:02:07,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20776086] [2020-07-21 20:02:07,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:02:07,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:07,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:02:07,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:02:07,780 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 5 states. [2020-07-21 20:02:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:08,004 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-07-21 20:02:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:02:08,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 20:02:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:08,007 INFO L225 Difference]: With dead ends: 58 [2020-07-21 20:02:08,007 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 20:02:08,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:02:08,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 20:02:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-07-21 20:02:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 20:02:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-21 20:02:08,019 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-07-21 20:02:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:08,019 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-21 20:02:08,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:02:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-21 20:02:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:02:08,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:08,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:08,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:08,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:08,236 INFO L82 PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times [2020-07-21 20:02:08,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:08,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077927403] [2020-07-21 20:02:08,237 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 20:02:08,363 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:08,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:08,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 20:02:08,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:08,379 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 [2020-07-21 20:02:08,380 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,387 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,387 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,388 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-07-21 20:02:08,432 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,433 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 [2020-07-21 20:02:08,434 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:08,435 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,474 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,476 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|], 2=[|v_#memory_$Pointer$.offset_22|, |v_#memory_$Pointer$.base_22|, |v_#memory_int_31|, |v_#memory_int_32|]} [2020-07-21 20:02:08,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:08,505 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2020-07-21 20:02:08,506 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,537 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:08,541 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,561 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:08,565 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,578 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,581 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:08,590 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,603 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-07-21 20:02:08,604 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 1 case distinctions, treesize of input 28 treesize of output 31 [2020-07-21 20:02:08,605 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,614 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,616 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:08,616 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:153, output treesize:23 [2020-07-21 20:02:08,641 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2020-07-21 20:02:08,642 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,646 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:08,647 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:08,648 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:32, output treesize:3 [2020-07-21 20:02:08,655 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 20:02:08,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:08,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077927403] [2020-07-21 20:02:08,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:08,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:02:08,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443510210] [2020-07-21 20:02:08,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:02:08,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:08,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:02:08,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:02:08,658 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-07-21 20:02:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:08,867 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-07-21 20:02:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:02:08,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 20:02:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:08,871 INFO L225 Difference]: With dead ends: 76 [2020-07-21 20:02:08,871 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 20:02:08,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:02:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 20:02:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-07-21 20:02:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 20:02:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-07-21 20:02:08,880 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 16 [2020-07-21 20:02:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:08,880 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-07-21 20:02:08,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:02:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-07-21 20:02:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 20:02:08,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:08,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:09,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:09,083 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:09,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times [2020-07-21 20:02:09,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:09,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467286608] [2020-07-21 20:02:09,085 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 20:02:09,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:02:09,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:02:09,270 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:02:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:02:09,318 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:02:09,346 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:02:09,346 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:02:09,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:09,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:02:09 BoogieIcfgContainer [2020-07-21 20:02:09,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:02:09,577 INFO L168 Benchmark]: Toolchain (without parser) took 4835.25 ms. Allocated memory was 137.4 MB in the beginning and 248.5 MB in the end (delta: 111.1 MB). Free memory was 101.2 MB in the beginning and 124.5 MB in the end (delta: -23.3 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:09,578 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 20:02:09,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.62 ms. Allocated memory was 137.4 MB in the beginning and 205.5 MB in the end (delta: 68.2 MB). Free memory was 100.8 MB in the beginning and 172.9 MB in the end (delta: -72.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:09,579 INFO L168 Benchmark]: Boogie Preprocessor took 64.43 ms. Allocated memory is still 205.5 MB. Free memory was 172.9 MB in the beginning and 170.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:09,580 INFO L168 Benchmark]: RCFGBuilder took 718.37 ms. Allocated memory is still 205.5 MB. Free memory was 170.1 MB in the beginning and 123.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:09,581 INFO L168 Benchmark]: TraceAbstraction took 3364.67 ms. Allocated memory was 205.5 MB in the beginning and 248.5 MB in the end (delta: 43.0 MB). Free memory was 122.5 MB in the beginning and 124.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:09,584 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 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.62 ms. Allocated memory was 137.4 MB in the beginning and 205.5 MB in the end (delta: 68.2 MB). Free memory was 100.8 MB in the beginning and 172.9 MB in the end (delta: -72.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.43 ms. Allocated memory is still 205.5 MB. Free memory was 172.9 MB in the beginning and 170.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 718.37 ms. Allocated memory is still 205.5 MB. Free memory was 170.1 MB in the beginning and 123.2 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3364.67 ms. Allocated memory was 205.5 MB in the beginning and 248.5 MB in the end (delta: 43.0 MB). Free memory was 122.5 MB in the beginning and 124.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; VAL [head={841:0}, malloc(sizeof(SLL))={841:0}, x={841:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head VAL [head={841:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={841:0}, x={841:0}] [L1017] COND FALSE !(!(((void*)0) != x)) VAL [head={841:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={841:0}, x={841:0}] [L1019] EXPR x->data VAL [head={841:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={841:0}, x={841:0}, x->data=1] [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data VAL [head={841:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={841:0}, x={841:0}, x->data=1] [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data VAL [head={841:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={841:0}, x={-1:0}, x->data=2] [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() VAL [head={841:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={841:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 116 SDslu, 209 SDs, 0 SdLazy, 119 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, 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, 3 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 62 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 8 QuantifiedInterpolants, 4542 SizeOfPredicates, 18 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...