/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:49:53,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:49:53,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:49:53,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:49:53,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:49:53,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:49:53,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:49:53,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:49:53,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:49:53,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:49:53,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:49:53,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:49:53,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:49:53,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:49:53,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:49:53,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:49:53,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:49:53,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:49:53,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:49:53,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:49:53,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:49:53,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:49:53,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:49:53,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:49:53,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:49:53,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:49:53,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:49:53,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:49:53,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:49:53,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:49:53,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:49:53,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:49:53,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:49:53,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:49:53,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:49:53,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:49:53,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:49:53,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:49:53,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:49:53,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:49:53,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:49:53,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:49:53,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:49:53,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:49:53,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:49:53,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:49:53,629 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:49:53,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:49:53,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:49:53,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:49:53,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:49:53,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:49:53,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:49:53,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:49:53,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:49:53,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:49:53,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:49:53,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:49:53,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:49:53,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:49:53,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:49:53,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:49:53,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:49:53,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:49:53,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:49:53,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:49:53,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:49:53,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:49:53,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:53,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:49:53,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:49:53,636 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 -> 4 [2020-07-20 21:49:53,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:49:53,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:49:53,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:49:53,992 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:49:53,992 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:49:53,993 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-07-20 21:49:54,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242b5075d/49b63b6399954044ad2cda7a124e3528/FLAGfa3f88316 [2020-07-20 21:49:54,796 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:49:54,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-07-20 21:49:54,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242b5075d/49b63b6399954044ad2cda7a124e3528/FLAGfa3f88316 [2020-07-20 21:49:55,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242b5075d/49b63b6399954044ad2cda7a124e3528 [2020-07-20 21:49:55,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:49:55,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:49:55,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:49:55,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:49:55,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:49:55,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5164c09c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55, skipping insertion in model container [2020-07-20 21:49:55,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:49:55,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:49:55,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:49:55,686 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:49:55,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:49:55,822 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:49:55,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55 WrapperNode [2020-07-20 21:49:55,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:49:55,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:49:55,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:49:55,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:49:55,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... [2020-07-20 21:49:55,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:49:55,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:49:55,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:49:55,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:49:55,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:49:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:49:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:49:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 21:49:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 21:49:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 21:49:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-20 21:49:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-20 21:49:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-20 21:49:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-20 21:49:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-20 21:49:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-20 21:49:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-20 21:49:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-20 21:49:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-20 21:49:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-20 21:49:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-20 21:49:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-20 21:49:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-20 21:49:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-20 21:49:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-20 21:49:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-20 21:49:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:49:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:49:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 21:49:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 21:49:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 21:49:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 21:49:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 21:49:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 21:49:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 21:49:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 21:49:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 21:49:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 21:49:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 21:49:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 21:49:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 21:49:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 21:49:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 21:49:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 21:49:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 21:49:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 21:49:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 21:49:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 21:49:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 21:49:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 21:49:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 21:49:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 21:49:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 21:49:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 21:49:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 21:49:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 21:49:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 21:49:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 21:49:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 21:49:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 21:49:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 21:49:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 21:49:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 21:49:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 21:49:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 21:49:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 21:49:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 21:49:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 21:49:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 21:49:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 21:49:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 21:49:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 21:49:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 21:49:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 21:49:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 21:49:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 21:49:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 21:49:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 21:49:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 21:49:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 21:49:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 21:49:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 21:49:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 21:49:56,035 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 21:49:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 21:49:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 21:49:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 21:49:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 21:49:56,036 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 21:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 21:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 21:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 21:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 21:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:49:56,037 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-20 21:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-20 21:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 21:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 21:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-20 21:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-20 21:49:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-20 21:49:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-20 21:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-20 21:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-20 21:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-20 21:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-20 21:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-20 21:49:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-20 21:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-20 21:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-20 21:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-20 21:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:49:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:49:56,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:49:56,960 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-20 21:49:56,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:49:56 BoogieIcfgContainer [2020-07-20 21:49:56,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:49:56,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:49:56,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:49:56,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:49:56,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:49:55" (1/3) ... [2020-07-20 21:49:56,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b11405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:49:56, skipping insertion in model container [2020-07-20 21:49:56,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:55" (2/3) ... [2020-07-20 21:49:56,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b11405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:49:56, skipping insertion in model container [2020-07-20 21:49:56,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:49:56" (3/3) ... [2020-07-20 21:49:56,978 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-07-20 21:49:56,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:49:57,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:49:57,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:49:57,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:49:57,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:49:57,092 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:49:57,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:49:57,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:49:57,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:49:57,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:49:57,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:49:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-20 21:49:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 21:49:57,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:57,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:57,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-07-20 21:49:57,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:57,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73513500] [2020-07-20 21:49:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 21:49:57,466 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:49:57,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:49:57,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 21:49:57,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:49:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 21:49:57,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:49:57,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73513500] [2020-07-20 21:49:57,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:49:57,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:49:57,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080277435] [2020-07-20 21:49:57,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:49:57,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:49:57,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:49:57,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:49:57,633 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 5 states. [2020-07-20 21:49:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:49:57,835 INFO L93 Difference]: Finished difference Result 342 states and 541 transitions. [2020-07-20 21:49:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:49:57,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-07-20 21:49:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:49:57,854 INFO L225 Difference]: With dead ends: 342 [2020-07-20 21:49:57,855 INFO L226 Difference]: Without dead ends: 168 [2020-07-20 21:49:57,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:49:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-07-20 21:49:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-07-20 21:49:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 21:49:57,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-07-20 21:49:57,938 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 59 [2020-07-20 21:49:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:49:57,939 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-07-20 21:49:57,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:49:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-07-20 21:49:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-20 21:49:57,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:57,946 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:49:58,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:58,161 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:58,162 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-07-20 21:49:58,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:58,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797752728] [2020-07-20 21:49:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 21:50:09,221 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:50:09,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:50:09,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-20 21:50:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:50:09,442 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:09,443 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 1 case distinctions, treesize of input 31 treesize of output 47 [2020-07-20 21:50:09,444 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:09,478 INFO L624 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-07-20 21:50:09,481 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:50:09,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-07-20 21:50:09,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2020-07-20 21:50:09,537 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:09,539 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:09,540 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:50:09,540 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-20 21:50:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-20 21:50:09,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:50:10,956 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 78 treesize of output 74 [2020-07-20 21:50:10,957 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 21:50:11,033 INFO L624 ElimStorePlain]: treesize reduction 38, result has 47.2 percent of original size [2020-07-20 21:50:11,035 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-20 21:50:11,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:7 [2020-07-20 21:50:11,062 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 182 treesize of output 174 [2020-07-20 21:50:11,066 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 21:50:11,192 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-20 21:50:11,194 INFO L624 ElimStorePlain]: treesize reduction 127, result has 21.6 percent of original size [2020-07-20 21:50:11,196 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-07-20 21:50:11,196 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2020-07-20 21:50:11,426 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:50:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-20 21:50:11,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797752728] [2020-07-20 21:50:11,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:50:11,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-07-20 21:50:11,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654398100] [2020-07-20 21:50:11,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 21:50:11,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:50:11,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 21:50:11,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-07-20 21:50:11,649 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 21 states. [2020-07-20 21:50:12,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:50:12,550 INFO L93 Difference]: Finished difference Result 299 states and 361 transitions. [2020-07-20 21:50:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 21:50:12,554 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 154 [2020-07-20 21:50:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:50:12,564 INFO L225 Difference]: With dead ends: 299 [2020-07-20 21:50:12,565 INFO L226 Difference]: Without dead ends: 229 [2020-07-20 21:50:12,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-07-20 21:50:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-20 21:50:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2020-07-20 21:50:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-20 21:50:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2020-07-20 21:50:12,622 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 154 [2020-07-20 21:50:12,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:50:12,623 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2020-07-20 21:50:12,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 21:50:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2020-07-20 21:50:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 21:50:12,654 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:50:12,655 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:50:12,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:50:12,857 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:50:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:50:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash -547179998, now seen corresponding path program 1 times [2020-07-20 21:50:12,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:50:12,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774592941] [2020-07-20 21:50:12,859 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 21:50:37,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:50:37,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:50:37,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-20 21:50:38,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:50:38,070 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 [2020-07-20 21:50:38,071 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:38,077 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:38,077 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:50:38,078 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:11 [2020-07-20 21:50:38,101 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 21:50:38,102 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:38,107 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:38,108 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:50:38,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-07-20 21:50:38,157 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 [2020-07-20 21:50:38,158 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:38,163 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:38,164 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:50:38,164 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 21:50:39,960 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0))))) is different from true [2020-07-20 21:50:47,634 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-20 21:50:49,649 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) c_dll_insert_slave_~next~0.base))) is different from true [2020-07-20 21:50:51,438 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|)))) is different from true [2020-07-20 21:50:53,472 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))) is different from true [2020-07-20 21:50:53,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:50:53,488 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:53,497 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:53,497 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:50:53,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:32, output treesize:1 [2020-07-20 21:50:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 8 not checked. [2020-07-20 21:50:53,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:50:58,207 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_alloc_or_die_slave_~ptr~0.offset_253 Int) (v_alloc_or_die_slave_~ptr~0.base_259 Int)) (or (< |c_#StackHeapBarrier| (+ v_alloc_or_die_slave_~ptr~0.base_259 1)) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| v_alloc_or_die_slave_~ptr~0.base_259 (store (select |c_#memory_$Pointer$.base| v_alloc_or_die_slave_~ptr~0.base_259) v_alloc_or_die_slave_~ptr~0.offset_253 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))))) is different from false [2020-07-20 21:50:58,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774592941] [2020-07-20 21:50:58,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 21:50:58,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-20 21:50:58,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372793163] [2020-07-20 21:50:58,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 21:50:58,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:50:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 21:50:58,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=233, Unknown=9, NotChecked=170, Total=462 [2020-07-20 21:50:58,214 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand 21 states. [2020-07-20 21:51:01,496 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 21 [2020-07-20 21:51:03,566 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:51:11,603 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 21:51:23,641 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 21:51:33,336 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 31 [2020-07-20 21:51:46,301 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 21:51:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:51:54,553 INFO L93 Difference]: Finished difference Result 390 states and 472 transitions. [2020-07-20 21:51:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 21:51:54,553 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 157 [2020-07-20 21:51:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:51:54,557 INFO L225 Difference]: With dead ends: 390 [2020-07-20 21:51:54,557 INFO L226 Difference]: Without dead ends: 207 [2020-07-20 21:51:54,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=120, Invalid=806, Unknown=24, NotChecked=310, Total=1260 [2020-07-20 21:51:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-20 21:51:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2020-07-20 21:51:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-20 21:51:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2020-07-20 21:51:54,585 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 157 [2020-07-20 21:51:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:51:54,585 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2020-07-20 21:51:54,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 21:51:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2020-07-20 21:51:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 21:51:54,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:51:54,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:51:54,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:51:54,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:51:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:51:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1779393950, now seen corresponding path program 1 times [2020-07-20 21:51:54,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:51:54,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924912109] [2020-07-20 21:51:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 22:03:33,211 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:03:33,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:03:45,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 105 conjunts are in the unsatisfiable core [2020-07-20 22:03:45,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:03:47,731 WARN L860 $PredicateComparison]: unable to prove that (exists ((dll_insert_master_~item~1.base Int)) (and (= (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|) c_dll_insert_master_~next~3.offset) (= c_dll_insert_master_~next~3.base (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))) is different from true [2020-07-20 22:03:47,733 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:03:49,746 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((dll_insert_master_~item~1.base Int)) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))) (exists ((dll_insert_master_~item~1.base Int)) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))))) is different from true [2020-07-20 22:03:51,841 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_1 Int)) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| v_prenex_1 (store (store (store (select |c_old(#memory_$Pointer$.base)| v_prenex_1) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))) (exists ((dll_insert_master_~item~1.base Int)) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))))) is different from true [2020-07-20 22:03:53,857 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((dll_insert_master_~item~1.base Int)) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))) (exists ((v_prenex_1 Int)) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| v_prenex_1 (store (store (store (select |c_old(#memory_$Pointer$.base)| v_prenex_1) 0 0) 4 0) 8 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|))))) is different from true [2020-07-20 22:03:53,865 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:03:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 128 proven. 5 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-20 22:03:53,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:03:58,293 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_dll_insert_master_~item~1.base_102 Int)) (= 0 (select (select (store |c_#memory_$Pointer$.base| v_dll_insert_master_~item~1.base_102 (store (store (store (select |c_#memory_$Pointer$.base| v_dll_insert_master_~item~1.base_102) 0 0) 4 0) 8 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))) (forall ((v_prenex_2 Int)) (= 0 (select (select (store |c_#memory_$Pointer$.offset| v_prenex_2 (store (store (store (select |c_#memory_$Pointer$.offset| v_prenex_2) 0 0) 4 0) 8 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)))) is different from false [2020-07-20 22:03:58,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924912109] [2020-07-20 22:03:58,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:03:58,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-07-20 22:03:58,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874328877] [2020-07-20 22:03:58,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 22:03:58,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:03:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 22:03:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=157, Unknown=5, NotChecked=140, Total=342 [2020-07-20 22:03:58,298 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand 18 states. [2020-07-20 22:04:12,752 WARN L193 SmtUtils]: Spent 10.02 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 22:04:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:04:13,999 INFO L93 Difference]: Finished difference Result 403 states and 480 transitions. [2020-07-20 22:04:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 22:04:14,000 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 157 [2020-07-20 22:04:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:04:14,003 INFO L225 Difference]: With dead ends: 403 [2020-07-20 22:04:14,003 INFO L226 Difference]: Without dead ends: 212 [2020-07-20 22:04:14,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=56, Invalid=263, Unknown=7, NotChecked=180, Total=506 [2020-07-20 22:04:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-07-20 22:04:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2020-07-20 22:04:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-20 22:04:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2020-07-20 22:04:14,027 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 157 [2020-07-20 22:04:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:04:14,028 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2020-07-20 22:04:14,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 22:04:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2020-07-20 22:04:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 22:04:14,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:04:14,031 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:04:14,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:04:14,245 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:04:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:04:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-07-20 22:04:14,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:04:14,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279633519] [2020-07-20 22:04:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 22:04:26,605 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:04:26,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:04:26,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 298 conjunts are in the unsatisfiable core [2020-07-20 22:04:26,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:04:26,859 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 22:04:26,859 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:26,862 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:26,862 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:04:26,862 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 22:04:27,137 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_1734|], 4=[|v_#memory_$Pointer$.offset_1590|]} [2020-07-20 22:04:27,164 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:27,165 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 1 case distinctions, treesize of input 27 treesize of output 39 [2020-07-20 22:04:27,166 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:27,215 INFO L624 ElimStorePlain]: treesize reduction 16, result has 82.2 percent of original size [2020-07-20 22:04:27,299 INFO L350 Elim1Store]: treesize reduction 30, result has 67.7 percent of original size [2020-07-20 22:04:27,300 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 43 treesize of output 73 [2020-07-20 22:04:27,301 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:27,366 INFO L624 ElimStorePlain]: treesize reduction 48, result has 52.5 percent of original size [2020-07-20 22:04:27,367 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 22:04:27,368 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:79, output treesize:43 [2020-07-20 22:04:27,551 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 29 treesize of output 17 [2020-07-20 22:04:27,553 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 22:04:27,567 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:04:27,574 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 22:04:27,575 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:27,591 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:27,592 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:04:27,592 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:45, output treesize:7 [2020-07-20 22:04:27,718 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-20 22:04:27,719 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:27,729 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:27,730 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:04:27,730 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-07-20 22:04:28,536 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-07-20 22:04:28,536 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:28,542 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:28,543 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:04:28,544 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2020-07-20 22:04:30,100 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 22:04:30,110 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 22:04:30,110 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:30,122 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:30,124 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 22:04:30,124 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:47 [2020-07-20 22:04:30,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:04:30,482 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-07-20 22:04:30,482 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:30,492 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:30,495 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 [2020-07-20 22:04:30,496 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:30,504 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:30,505 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:04:30,505 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:7 [2020-07-20 22:04:33,147 WARN L860 $PredicateComparison]: unable to prove that (exists ((dll_insert_slave_~item~0.base Int)) (and (<= (+ dll_insert_slave_~item~0.base 1) |c_#StackHeapBarrier|) (= (let ((.cse0 (let ((.cse3 (select |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base))) (let ((.cse2 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store .cse3 0 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|))) (let ((.cse1 (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store .cse3 0 .cse2)))) (store .cse1 .cse2 (store (select .cse1 .cse2) (+ (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_slave_~item~0.base (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_slave_~item~0.base) 0 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) 4) dll_insert_slave_~item~0.base))))))) (store .cse0 |c_dll_insert_slave_#in~dll.base| (store (select .cse0 |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset| dll_insert_slave_~item~0.base))) |c_#memory_$Pointer$.base|))) is different from true [2020-07-20 22:04:35,174 WARN L860 $PredicateComparison]: unable to prove that (exists ((dll_insert_slave_~item~0.base Int)) (and (<= (+ dll_insert_slave_~item~0.base 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (let ((.cse0 (let ((.cse3 (select |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base))) (let ((.cse2 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store .cse3 0 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|))) (let ((.cse1 (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store .cse3 0 .cse2)))) (store .cse1 .cse2 (store (select .cse1 .cse2) (+ (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_slave_~item~0.base (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_slave_~item~0.base) 0 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|) 4) dll_insert_slave_~item~0.base))))))) (store .cse0 |c_##fun~$Pointer$~TO~VOID_#in~9.base| (store (select .cse0 |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset| dll_insert_slave_~item~0.base)))))) is different from true [2020-07-20 22:04:35,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:04:35,206 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 751 treesize of output 739 [2020-07-20 22:04:35,207 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:04:35,250 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:04:35,253 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-20 22:04:35,253 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:790, output treesize:755