/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/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:02:18,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:02:18,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:02:18,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:02:18,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:02:18,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:02:18,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:02:18,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:02:18,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:02:18,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:02:18,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:02:18,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:02:18,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:02:18,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:02:18,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:02:18,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:02:18,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:02:18,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:02:18,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:02:18,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:02:18,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:02:18,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:02:18,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:02:18,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:02:18,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 20:02:18,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 20:02:18,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 20:02:18,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 20:02:18,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 20:02:18,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 20:02:18,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 20:02:18,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 20:02:18,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 20:02:18,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 20:02:18,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 20:02:18,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 20:02:18,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 20:02:18,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 20:02:18,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:02:18,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:02:18,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:02:18,665 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 20:02:18,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:02:18,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:02:18,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:02:18,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:02:18,694 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:02:18,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:02:18,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:02:18,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:02:18,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:02:18,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:02:18,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:02:18,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:02:18,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:02:18,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:02:18,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:02:18,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:02:18,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:02:18,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:02:18,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:02:18,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:02:18,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:02:18,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:02:18,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:02:18,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:02:18,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:02:18,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:02:18,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:18,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:02:18,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:02:18,700 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 20:02:19,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:02:19,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:02:19,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:02:19,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:02:19,047 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:02:19,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-07-21 20:02:19,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c781772b/8d2cbc2ffdd141b9ab8c90048afa356d/FLAG92df328df [2020-07-21 20:02:19,696 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:02:19,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-07-21 20:02:19,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c781772b/8d2cbc2ffdd141b9ab8c90048afa356d/FLAG92df328df [2020-07-21 20:02:19,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c781772b/8d2cbc2ffdd141b9ab8c90048afa356d [2020-07-21 20:02:19,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:02:19,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:02:19,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:02:19,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:02:19,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:02:19,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:02:19" (1/1) ... [2020-07-21 20:02:19,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700940ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:19, skipping insertion in model container [2020-07-21 20:02:19,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:02:19" (1/1) ... [2020-07-21 20:02:19,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:02:20,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:02:20,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:02:20,498 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:02:20,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:02:20,619 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:02:20,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20 WrapperNode [2020-07-21 20:02:20,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:02:20,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:02:20,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:02:20,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:02:20,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... [2020-07-21 20:02:20,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:02:20,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:02:20,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:02:20,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:02:20,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:02:20,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:02:20,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:02:20,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 20:02:20,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 20:02:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 20:02:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 20:02:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-21 20:02:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-21 20:02:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-21 20:02:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-21 20:02:20,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-21 20:02:20,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-21 20:02:20,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-21 20:02:20,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-21 20:02:20,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-21 20:02:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-21 20:02:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-21 20:02:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-21 20:02:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-21 20:02:20,784 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-21 20:02:20,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:02:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 20:02:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 20:02:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 20:02:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 20:02:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 20:02:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 20:02:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 20:02:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 20:02:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 20:02:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 20:02:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 20:02:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 20:02:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 20:02:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 20:02:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 20:02:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 20:02:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 20:02:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 20:02:20,790 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 20:02:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 20:02:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 20:02:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 20:02:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 20:02:20,791 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 20:02:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 20:02:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 20:02:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 20:02:20,792 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 20:02:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 20:02:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 20:02:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 20:02:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 20:02:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 20:02:20,793 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 20:02:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 20:02:20,794 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 20:02:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 20:02:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 20:02:20,795 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 20:02:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 20:02:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 20:02:20,796 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 20:02:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 20:02:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 20:02:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 20:02:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 20:02:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 20:02:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 20:02:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:02:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 20:02:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 20:02:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:02:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 20:02:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 20:02:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 20:02:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 20:02:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 20:02:20,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 20:02:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 20:02:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 20:02:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 20:02:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 20:02:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 20:02:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 20:02:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 20:02:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 20:02:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 20:02:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 20:02:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 20:02:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 20:02:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-21 20:02:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-21 20:02:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 20:02:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-21 20:02:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-21 20:02:20,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-21 20:02:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 20:02:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-21 20:02:20,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-21 20:02:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-21 20:02:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-21 20:02:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-21 20:02:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-21 20:02:20,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-21 20:02:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-21 20:02:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 20:02:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 20:02:20,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:02:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-21 20:02:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:02:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:02:20,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 20:02:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 20:02:20,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:02:21,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:02:21,501 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 20:02:21,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:02:21 BoogieIcfgContainer [2020-07-21 20:02:21,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:02:21,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:02:21,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:02:21,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:02:21,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:02:19" (1/3) ... [2020-07-21 20:02:21,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac9bd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:02:21, skipping insertion in model container [2020-07-21 20:02:21,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:20" (2/3) ... [2020-07-21 20:02:21,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac9bd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:02:21, skipping insertion in model container [2020-07-21 20:02:21,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:02:21" (3/3) ... [2020-07-21 20:02:21,516 INFO L109 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-07-21 20:02:21,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:02:21,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:02:21,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:02:21,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:02:21,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:02:21,573 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:02:21,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:02:21,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:02:21,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:02:21,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:02:21,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:02:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-07-21 20:02:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 20:02:21,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:21,606 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:21,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:21,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1154845074, now seen corresponding path program 1 times [2020-07-21 20:02:21,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:21,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731784530] [2020-07-21 20:02:21,625 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 20:02:21,875 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:21,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:21,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 20:02:21,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:02:21,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:21,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731784530] [2020-07-21 20:02:21,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:21,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:02:21,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795261489] [2020-07-21 20:02:21,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:02:21,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:21,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:02:21,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:02:21,997 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-07-21 20:02:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:22,073 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-07-21 20:02:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:02:22,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-21 20:02:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:22,094 INFO L225 Difference]: With dead ends: 100 [2020-07-21 20:02:22,095 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 20:02:22,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:02:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 20:02:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-21 20:02:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 20:02:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-07-21 20:02:22,182 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 28 [2020-07-21 20:02:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:22,183 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-07-21 20:02:22,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:02:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-07-21 20:02:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 20:02:22,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:22,185 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 20:02:22,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:22,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:22,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2088028185, now seen corresponding path program 1 times [2020-07-21 20:02:22,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:22,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891084271] [2020-07-21 20:02:22,389 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 20:02:22,576 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:22,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:22,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 20:02:22,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:22,800 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:02:22,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:02:23,168 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:02:23,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:02:23,328 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:23,329 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 19 [2020-07-21 20:02:23,331 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 20:02:23,332 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 20:02:23,335 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 20:02:23,336 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:23,344 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:23,348 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2020-07-21 20:02:23,349 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:23,356 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:23,357 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:23,357 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:57, output treesize:12 [2020-07-21 20:02:23,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:02:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:23,438 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2020-07-21 20:02:23,438 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:23,441 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 20:02:23,442 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:23,443 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:23,443 INFO L512 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2020-07-21 20:02:23,443 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:23,444 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:1 [2020-07-21 20:02:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 20:02:23,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891084271] [2020-07-21 20:02:23,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:02:23,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-07-21 20:02:23,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940428645] [2020-07-21 20:02:23,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 20:02:23,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:23,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 20:02:23,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-07-21 20:02:23,462 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 17 states. [2020-07-21 20:02:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:24,326 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-07-21 20:02:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 20:02:24,329 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-07-21 20:02:24,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:24,332 INFO L225 Difference]: With dead ends: 90 [2020-07-21 20:02:24,332 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 20:02:24,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2020-07-21 20:02:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 20:02:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-07-21 20:02:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 20:02:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2020-07-21 20:02:24,349 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 28 [2020-07-21 20:02:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:24,349 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2020-07-21 20:02:24,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 20:02:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2020-07-21 20:02:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 20:02:24,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:24,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:24,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:24,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:24,554 INFO L82 PathProgramCache]: Analyzing trace with hash -513424880, now seen corresponding path program 1 times [2020-07-21 20:02:24,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:24,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371813983] [2020-07-21 20:02:24,555 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 20:02:24,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:02:24,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:24,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-21 20:02:24,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:24,711 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-21 20:02:24,711 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:24,719 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:24,722 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-21 20:02:24,723 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:24,731 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:24,731 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:24,732 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2020-07-21 20:02:24,829 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:02:24,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:24,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371813983] [2020-07-21 20:02:24,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:24,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 20:02:24,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412339338] [2020-07-21 20:02:24,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 20:02:24,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:24,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 20:02:24,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:02:24,838 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 9 states. [2020-07-21 20:02:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:25,451 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-07-21 20:02:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 20:02:25,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-07-21 20:02:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:25,454 INFO L225 Difference]: With dead ends: 94 [2020-07-21 20:02:25,454 INFO L226 Difference]: Without dead ends: 79 [2020-07-21 20:02:25,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-07-21 20:02:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-21 20:02:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 53. [2020-07-21 20:02:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 20:02:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-07-21 20:02:25,465 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 28 [2020-07-21 20:02:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:25,466 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-07-21 20:02:25,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 20:02:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-07-21 20:02:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 20:02:25,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:25,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:25,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:25,681 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:25,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:25,681 INFO L82 PathProgramCache]: Analyzing trace with hash 248987231, now seen corresponding path program 1 times [2020-07-21 20:02:25,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:25,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953352677] [2020-07-21 20:02:25,683 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 20:02:25,814 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:25,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:25,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-21 20:02:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:25,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:26,121 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-07-21 20:02:26,122 INFO L350 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2020-07-21 20:02:26,122 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 3 case distinctions, treesize of input 77 treesize of output 108 [2020-07-21 20:02:26,123 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:26,216 INFO L624 ElimStorePlain]: treesize reduction 36, result has 68.4 percent of original size [2020-07-21 20:02:26,220 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,221 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,224 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,228 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,229 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,231 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,232 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,234 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,235 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,237 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,239 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,241 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:26,241 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:84, output treesize:103 [2020-07-21 20:02:26,244 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,245 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,246 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,247 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,248 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,250 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,251 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,252 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,253 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,254 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,255 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,330 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,333 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,339 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,340 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,341 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,349 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,350 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,353 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:02:26,354 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,457 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,458 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:02:26,460 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 20:02:46,514 WARN L193 SmtUtils]: Spent 19.99 s on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-07-21 20:02:46,642 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-21 20:02:46,646 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-21 20:03:14,798 WARN L193 SmtUtils]: Spent 28.07 s on a formula simplification that was a NOOP. DAG size: 55 [2020-07-21 20:03:33,361 WARN L193 SmtUtils]: Spent 18.50 s on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-07-21 20:03:33,500 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 5, 1] term [2020-07-21 20:03:33,500 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:03:33,642 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 20:03:33,648 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 20:03:33,668 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 20:03:33,678 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 20:03:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:03:33,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:03:33,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953352677] [2020-07-21 20:03:33,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:03:33,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-21 20:03:33,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95828826] [2020-07-21 20:03:33,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 20:03:33,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:03:33,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 20:03:33,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-07-21 20:03:33,739 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 15 states. [2020-07-21 20:03:49,648 WARN L193 SmtUtils]: Spent 15.45 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-07-21 20:04:06,735 WARN L193 SmtUtils]: Spent 17.04 s on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-07-21 20:04:07,056 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-07-21 20:04:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:04:07,134 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-07-21 20:04:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 20:04:07,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-07-21 20:04:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:04:07,136 INFO L225 Difference]: With dead ends: 65 [2020-07-21 20:04:07,137 INFO L226 Difference]: Without dead ends: 58 [2020-07-21 20:04:07,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 100.0s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-07-21 20:04:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-21 20:04:07,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-07-21 20:04:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 20:04:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-07-21 20:04:07,151 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 48 [2020-07-21 20:04:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:04:07,154 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-07-21 20:04:07,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 20:04:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-07-21 20:04:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 20:04:07,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:04:07,156 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:04:07,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:04:07,359 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:04:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:04:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1823590536, now seen corresponding path program 1 times [2020-07-21 20:04:07,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:04:07,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224992076] [2020-07-21 20:04:07,361 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 20:04:07,579 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:04:07,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 20:04:07,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:04:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 20:04:07,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 20:04:07,657 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 20:04:07,658 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:04:07,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:04:07,903 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 20:04:07,905 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 3 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 20:04:07,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:04:07 BoogieIcfgContainer [2020-07-21 20:04:07,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:04:07,933 INFO L168 Benchmark]: Toolchain (without parser) took 107958.07 ms. Allocated memory was 137.9 MB in the beginning and 307.2 MB in the end (delta: 169.3 MB). Free memory was 101.5 MB in the beginning and 207.9 MB in the end (delta: -106.4 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:04:07,934 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 20:04:07,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.23 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 162.5 MB in the end (delta: -61.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-21 20:04:07,935 INFO L168 Benchmark]: Boogie Preprocessor took 75.45 ms. Allocated memory is still 200.8 MB. Free memory was 162.5 MB in the beginning and 159.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-21 20:04:07,936 INFO L168 Benchmark]: RCFGBuilder took 805.84 ms. Allocated memory is still 200.8 MB. Free memory was 159.1 MB in the beginning and 102.5 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:04:07,937 INFO L168 Benchmark]: TraceAbstraction took 106423.42 ms. Allocated memory was 200.8 MB in the beginning and 307.2 MB in the end (delta: 106.4 MB). Free memory was 101.8 MB in the beginning and 207.9 MB in the end (delta: -106.2 MB). Peak memory consumption was 261.7 kB. Max. memory is 7.1 GB. [2020-07-21 20:04:07,941 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.23 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 162.5 MB in the end (delta: -61.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.45 ms. Allocated memory is still 200.8 MB. Free memory was 162.5 MB in the beginning and 159.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 805.84 ms. Allocated memory is still 200.8 MB. Free memory was 159.1 MB in the beginning and 102.5 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 106423.42 ms. Allocated memory was 200.8 MB in the beginning and 307.2 MB in the end (delta: 106.4 MB). Free memory was 101.8 MB in the beginning and 207.9 MB in the end (delta: -106.2 MB). Peak memory consumption was 261.7 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 3 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 656]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L651] struct ldv_list_head s1 = { &(s1), &(s1) }; VAL [\old(s1)=null, \old(s1)=null, s1={12065:0}] [L660] CALL foo() VAL [s1={12065:0}] [L654] int j = __VERIFIER_nondet_int(); [L655] CALL ldv_set_add(j, &s1) VAL [\old(new)=-2147460874, s={12065:0}, s1={12065:0}] [L622] CALL, EXPR ldv_is_in_set(new, s) VAL [\old(e)=-2147460874, s={12065:0}, s1={12065:0}] [L640] struct ldv_list_element *m; [L641] EXPR (s)->next [L641] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L641] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=-2147460874, __mptr={12065:0}, e=-2147460874, m={12065:-4}, s={12065:0}, s={12065:0}, s1={12065:0}] [L641] COND FALSE !(&m->list != (s)) VAL [\old(e)=-2147460874, __mptr={12065:0}, e=-2147460874, m={12065:-4}, s={12065:0}, s={12065:0}, s1={12065:0}] [L646] return 0; VAL [\old(e)=-2147460874, \result=0, __mptr={12065:0}, e=-2147460874, m={12065:-4}, s={12065:0}, s={12065:0}, s1={12065:0}] [L622] RET, EXPR ldv_is_in_set(new, s) VAL [\old(new)=-2147460874, ldv_is_in_set(new, s)=0, new=-2147460874, s={12065:0}, s={12065:0}, s1={12065:0}] [L622] COND TRUE !ldv_is_in_set(new, s) [L623] struct ldv_list_element *le; VAL [\old(new)=-2147460874, new=-2147460874, s={12065:0}, s={12065:0}, s1={12065:0}] [L624] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, s1={12065:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={12063:0}, ptr={12063:0}, s1={12065:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, s1={12065:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s1={12065:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={12063:0}, ptr={12063:0}, s1={12065:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={12063:0}, malloc(size)={12063:0}, ptr={12063:0}, s1={12065:0}, size=12] [L624] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(new)=-2147460874, ldv_successful_malloc(sizeof(struct ldv_list_element))={12063:0}, new=-2147460874, s={12065:0}, s={12065:0}, s1={12065:0}] [L624] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L625] le->e = new VAL [\old(new)=-2147460874, le={12063:0}, new=-2147460874, s={12065:0}, s={12065:0}, s1={12065:0}] [L626] CALL ldv_list_add(&le->list, s) VAL [head={12065:0}, new={12063:4}, s1={12065:0}] [L594] EXPR head->next VAL [head={12065:0}, head={12065:0}, head->next={12065:0}, new={12063:4}, new={12063:4}, s1={12065:0}] [L594] CALL __ldv_list_add(new, head, head->next) VAL [new={12063:4}, next={12065:0}, prev={12065:0}, s1={12065:0}] [L582] next->prev = new [L583] new->next = next [L584] new->prev = prev [L585] prev->next = new VAL [new={12063:4}, new={12063:4}, next={12065:0}, next={12065:0}, prev={12065:0}, prev={12065:0}, s1={12065:0}] [L594] RET __ldv_list_add(new, head, head->next) VAL [head={12065:0}, head={12065:0}, head->next={12065:0}, new={12063:4}, new={12063:4}, s1={12065:0}] [L626] RET ldv_list_add(&le->list, s) VAL [\old(new)=-2147460874, le={12063:0}, new=-2147460874, s={12065:0}, s={12065:0}, s1={12065:0}] [L655] RET ldv_set_add(j, &s1) VAL [j=-2147460874, s1={12065:0}] [L656] CALL ldv_is_in_set(j, &s1) VAL [\old(e)=-2147460874, s={12065:0}, s1={12065:0}] [L640] struct ldv_list_element *m; [L641] EXPR (s)->next [L641] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L641] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=-2147460874, __mptr={12063:4}, e=-2147460874, m={12063:0}, s={12065:0}, s={12065:0}, s1={12065:0}] [L641] COND TRUE &m->list != (s) [L642] EXPR m->e VAL [\old(e)=-2147460874, __mptr={12063:4}, e=-2147460874, m={12063:0}, m->e=-2147460874, s={12065:0}, s={12065:0}, s1={12065:0}] [L642] COND TRUE m->e == e [L643] return 1; VAL [\old(e)=-2147460874, \result=1, __mptr={12063:4}, e=-2147460874, m={12063:0}, s={12065:0}, s={12065:0}, s1={12065:0}] [L656] RET ldv_is_in_set(j, &s1) VAL [j=-2147460874, ldv_is_in_set(j, &s1)=1, s1={12065:0}] [L656] COND TRUE ldv_is_in_set(j, &s1) [L656] __VERIFIER_error() VAL [j=-2147460874, s1={12065:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 106.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 196 SDtfs, 239 SDslu, 810 SDs, 0 SdLazy, 828 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 101.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 69.0s InterpolantComputationTime, 180 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 155 ConstructedInterpolants, 13 QuantifiedInterpolants, 138687 SizeOfPredicates, 61 NumberOfNonLiveVariables, 583 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 18/23 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...