/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:49:50,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:49:50,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:49:50,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:49:50,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:49:50,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:49:50,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:49:50,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:49:50,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:49:50,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:49:50,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:49:50,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:49:50,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:49:50,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:49:50,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:49:50,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:49:50,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:49:50,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:49:50,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:49:50,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:49:50,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:49:50,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:49:50,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:49:50,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:49:50,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:49:50,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:49:50,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:49:50,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:49:50,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:49:50,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:49:50,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:49:50,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:49:50,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:49:50,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:49:50,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:49:50,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:49:50,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:49:50,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:49:50,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:49:50,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:49:50,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:49:50,637 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 21:49:50,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:49:50,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:49:50,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:49:50,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:49:50,654 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:49:50,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:49:50,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:49:50,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:49:50,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:49:50,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:49:50,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:49:50,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:49:50,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:49:50,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:49:50,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:49:50,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:49:50,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:49:50,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:49:50,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:49:50,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:49:50,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:49:50,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:49:50,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:49:50,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:49:50,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:49:50,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:49:50,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:50,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:49:50,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:49:50,659 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 21:49:50,975 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:49:50,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:49:50,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:49:50,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:49:50,995 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:49:50,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-20 21:49:51,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4074486a9/058f95b0cf2a45b4a13a9cf8fc03b0bc/FLAGd712bdf84 [2020-07-20 21:49:51,659 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:49:51,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-20 21:49:51,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4074486a9/058f95b0cf2a45b4a13a9cf8fc03b0bc/FLAGd712bdf84 [2020-07-20 21:49:51,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4074486a9/058f95b0cf2a45b4a13a9cf8fc03b0bc [2020-07-20 21:49:51,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:49:51,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:49:51,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:49:51,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:49:51,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:49:51,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:49:51" (1/1) ... [2020-07-20 21:49:51,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae535ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:51, skipping insertion in model container [2020-07-20 21:49:51,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:49:51" (1/1) ... [2020-07-20 21:49:51,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:49:52,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:49:52,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:49:52,576 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:49:52,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:49:52,710 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:49:52,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52 WrapperNode [2020-07-20 21:49:52,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:49:52,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:49:52,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:49:52,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:49:52,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (1/1) ... [2020-07-20 21:49:52,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:49:52,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:49:52,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:49:52,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:49:52,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (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 21:49:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:49:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:49:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 21:49:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 21:49:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 21:49:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-20 21:49:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-20 21:49:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-20 21:49:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-20 21:49:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-20 21:49:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-20 21:49:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-20 21:49:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-20 21:49:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-20 21:49:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-20 21:49:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-20 21:49:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-20 21:49:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-20 21:49:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-20 21:49:52,930 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-20 21:49:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-20 21:49:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:49:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:49:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 21:49:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 21:49:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 21:49:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 21:49:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 21:49:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 21:49:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 21:49:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 21:49:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 21:49:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 21:49:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 21:49:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 21:49:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 21:49:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 21:49:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 21:49:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 21:49:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 21:49:52,935 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 21:49:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 21:49:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 21:49:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 21:49:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 21:49:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 21:49:52,936 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 21:49:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 21:49:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 21:49:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 21:49:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 21:49:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 21:49:52,937 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 21:49:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 21:49:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 21:49:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 21:49:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 21:49:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 21:49:52,938 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 21:49:52,939 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 21:49:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 21:49:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 21:49:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 21:49:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 21:49:52,940 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 21:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 21:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 21:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 21:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 21:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 21:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 21:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-20 21:49:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-20 21:49:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 21:49:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 21:49:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-20 21:49:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-20 21:49:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 21:49:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-20 21:49:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:49:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 21:49:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 21:49:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:49:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-20 21:49:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-20 21:49:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-20 21:49:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-20 21:49:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-20 21:49:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-20 21:49:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:49:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:49:53,908 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:49:53,908 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-20 21:49:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:49:53 BoogieIcfgContainer [2020-07-20 21:49:53,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:49:53,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:49:53,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:49:53,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:49:53,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:49:51" (1/3) ... [2020-07-20 21:49:53,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc5bde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:49:53, skipping insertion in model container [2020-07-20 21:49:53,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:49:52" (2/3) ... [2020-07-20 21:49:53,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc5bde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:49:53, skipping insertion in model container [2020-07-20 21:49:53,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:49:53" (3/3) ... [2020-07-20 21:49:53,933 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-07-20 21:49:53,946 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:49:53,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:49:53,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:49:54,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:49:54,018 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:49:54,018 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:49:54,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:49:54,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:49:54,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:49:54,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:49:54,019 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:49:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-20 21:49:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 21:49:54,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:54,055 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 21:49:54,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:54,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-07-20 21:49:54,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:54,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069493654] [2020-07-20 21:49:54,072 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 21:49:54,498 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:49:54,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:49:54,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 21:49:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:49:54,691 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 21:49:54,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:49:54,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069493654] [2020-07-20 21:49:54,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:49:54,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:49:54,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351711343] [2020-07-20 21:49:54,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:49:54,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:49:54,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:49:54,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:49:54,724 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 5 states. [2020-07-20 21:49:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:49:54,907 INFO L93 Difference]: Finished difference Result 342 states and 541 transitions. [2020-07-20 21:49:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:49:54,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-07-20 21:49:54,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:49:54,924 INFO L225 Difference]: With dead ends: 342 [2020-07-20 21:49:54,924 INFO L226 Difference]: Without dead ends: 168 [2020-07-20 21:49:54,931 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 21:49:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-07-20 21:49:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-07-20 21:49:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 21:49:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-07-20 21:49:55,017 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 59 [2020-07-20 21:49:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:49:55,017 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-07-20 21:49:55,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:49:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-07-20 21:49:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-20 21:49:55,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:49:55,024 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 21:49:55,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:49:55,239 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:49:55,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:49:55,240 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-07-20 21:49:55,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:49:55,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479686643] [2020-07-20 21:49:55,241 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 21:50:13,789 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:50:13,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:50:13,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-20 21:50:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:50:14,076 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:14,077 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 21:50:14,078 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:14,120 INFO L624 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-07-20 21:50:14,122 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 21:50:14,123 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-07-20 21:50:14,180 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 21:50:14,181 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:50:14,186 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:50:14,186 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 21:50:14,186 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-20 21:50:14,418 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 21:50:14,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:50:15,616 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 21:50:15,618 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 21:50:15,691 INFO L624 ElimStorePlain]: treesize reduction 38, result has 47.2 percent of original size [2020-07-20 21:50:15,695 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 21:50:15,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:7 [2020-07-20 21:50:15,706 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 21:50:15,708 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 21:50:15,870 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-20 21:50:15,871 INFO L624 ElimStorePlain]: treesize reduction 127, result has 21.6 percent of original size [2020-07-20 21:50:15,872 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 21:50:15,873 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2020-07-20 21:50:16,030 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 21:50:16,249 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 21:50:16,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479686643] [2020-07-20 21:50:16,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:50:16,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-07-20 21:50:16,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619420422] [2020-07-20 21:50:16,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 21:50:16,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:50:16,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 21:50:16,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-07-20 21:50:16,255 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 21 states. [2020-07-20 21:50:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:50:17,185 INFO L93 Difference]: Finished difference Result 299 states and 361 transitions. [2020-07-20 21:50:17,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 21:50:17,192 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 154 [2020-07-20 21:50:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:50:17,198 INFO L225 Difference]: With dead ends: 299 [2020-07-20 21:50:17,199 INFO L226 Difference]: Without dead ends: 229 [2020-07-20 21:50:17,201 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 21:50:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-20 21:50:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2020-07-20 21:50:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-20 21:50:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2020-07-20 21:50:17,248 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 154 [2020-07-20 21:50:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:50:17,249 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2020-07-20 21:50:17,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 21:50:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2020-07-20 21:50:17,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 21:50:17,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:50:17,253 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 21:50:17,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:50:17,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:50:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:50:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash -547179998, now seen corresponding path program 1 times [2020-07-20 21:50:17,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:50:17,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650500947] [2020-07-20 21:50:17,457 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 21:58:35,417 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:58:35,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:58:43,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-20 21:58:43,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:58:43,572 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 21:58:43,573 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:58:43,579 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:58:43,579 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 21:58:43,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-07-20 21:58:43,626 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 21:58:43,627 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:58:43,631 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:58:43,632 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 21:58:43,632 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-20 21:58:45,717 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$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0))))) is different from true [2020-07-20 21:58:55,597 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 21:58:57,633 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$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 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 21:58:59,639 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$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) 0))) is different from true [2020-07-20 21:59:01,669 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$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))) is different from true [2020-07-20 21:59:01,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 21:59:01,683 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:59:01,684 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:59:01,685 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 21:59:01,685 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:1 [2020-07-20 21:59:01,751 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 21:59:01,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:59:06,453 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$.base| v_alloc_or_die_slave_~ptr~0.base_259 (store (store (select |c_#memory_$Pointer$.base| v_alloc_or_die_slave_~ptr~0.base_259) v_alloc_or_die_slave_~ptr~0.offset_253 0) (+ v_alloc_or_die_slave_~ptr~0.offset_253 4) 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))))) is different from false [2020-07-20 21:59:06,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650500947] [2020-07-20 21:59:06,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 21:59:06,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-20 21:59:06,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217516016] [2020-07-20 21:59:06,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 21:59:06,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:59:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 21:59:06,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=233, Unknown=9, NotChecked=170, Total=462 [2020-07-20 21:59:06,459 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand 21 states. [2020-07-20 21:59:10,543 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 21:59:12,596 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 21:59:20,656 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2020-07-20 21:59:32,743 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 29 [2020-07-20 21:59:42,818 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 34 [2020-07-20 21:59:56,891 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 31 [2020-07-20 22:00:04,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:00:04,793 INFO L93 Difference]: Finished difference Result 390 states and 472 transitions. [2020-07-20 22:00:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 22:00:04,794 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 157 [2020-07-20 22:00:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:00:04,801 INFO L225 Difference]: With dead ends: 390 [2020-07-20 22:00:04,802 INFO L226 Difference]: Without dead ends: 207 [2020-07-20 22:00:04,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 61.9s TimeCoverageRelationStatistics Valid=120, Invalid=806, Unknown=24, NotChecked=310, Total=1260 [2020-07-20 22:00:04,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-20 22:00:04,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2020-07-20 22:00:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-20 22:00:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2020-07-20 22:00:04,853 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 157 [2020-07-20 22:00:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:00:04,854 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2020-07-20 22:00:04,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 22:00:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2020-07-20 22:00:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 22:00:04,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:00:04,863 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 22:00:05,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:00:05,077 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:00:05,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:00:05,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1779393950, now seen corresponding path program 1 times [2020-07-20 22:00:05,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:00:05,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964341989] [2020-07-20 22:00:05,079 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 22:02:36,993 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:02:36,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:02:38,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-20 22:02:38,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:02:38,800 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 22:02:38,800 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:02:38,810 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:02:38,816 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 22:02:38,817 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:02:38,826 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:02:38,827 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 22:02:38,827 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2020-07-20 22:02:40,925 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_master_~ptr~1.base Int) (alloc_or_die_master_~ptr~1.offset Int)) (let ((.cse0 (+ alloc_or_die_master_~ptr~1.offset 4)) (.cse1 (+ alloc_or_die_master_~ptr~1.offset 8))) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) .cse0 0) .cse1 0))) (= (store |c_old(#memory_$Pointer$.offset)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) .cse0 0) .cse1 0)) |c_#memory_$Pointer$.offset|)))) is different from true [2020-07-20 22:02:44,973 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-20 22:02:47,014 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_master_~ptr~1.base Int) (alloc_or_die_master_~ptr~1.offset Int)) (let ((.cse0 (+ alloc_or_die_master_~ptr~1.offset 4)) (.cse1 (+ alloc_or_die_master_~ptr~1.offset 8))) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.offset)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) .cse0 0) .cse1 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|) c_dll_insert_master_~next~3.offset) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) .cse0 0) .cse1 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|) c_dll_insert_master_~next~3.base)))) is different from true [2020-07-20 22:02:47,017 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,054 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((alloc_or_die_master_~ptr~1.base Int) (alloc_or_die_master_~ptr~1.offset Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) (+ alloc_or_die_master_~ptr~1.offset 4) 0) (+ alloc_or_die_master_~ptr~1.offset 8) 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))))) (exists ((alloc_or_die_master_~ptr~1.base Int) (alloc_or_die_master_~ptr~1.offset Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) (+ alloc_or_die_master_~ptr~1.offset 4) 0) (+ alloc_or_die_master_~ptr~1.offset 8) 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))))) is different from true [2020-07-20 22:02:49,067 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 70 treesize of output 66 [2020-07-20 22:02:49,068 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:02:49,169 INFO L624 ElimStorePlain]: treesize reduction 18, result has 79.5 percent of original size [2020-07-20 22:02:49,174 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 70 treesize of output 66 [2020-07-20 22:02:49,176 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:02:49,271 INFO L624 ElimStorePlain]: treesize reduction 20, result has 78.9 percent of original size [2020-07-20 22:02:49,273 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:02:49,275 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,275 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,277 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,278 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,280 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:02:49,281 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,281 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,283 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,284 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:49,285 INFO L544 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:02:49,285 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:65, output treesize:1 [2020-07-20 22:02:51,301 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((alloc_or_die_master_~ptr~1.base Int) (alloc_or_die_master_~ptr~1.offset Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) (+ alloc_or_die_master_~ptr~1.offset 4) 0) (+ alloc_or_die_master_~ptr~1.offset 8) 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))))) (exists ((v_prenex_6 Int) (v_prenex_5 Int)) (and (<= (+ v_prenex_5 1) |c_#StackHeapBarrier|) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| v_prenex_5 (store (store (store (select |c_old(#memory_$Pointer$.offset)| v_prenex_5) v_prenex_6 0) (+ v_prenex_6 4) 0) (+ v_prenex_6 8) 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))))) is different from true [2020-07-20 22:02:53,323 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_6 Int) (v_prenex_5 Int)) (and (<= (+ v_prenex_5 1) |c_#StackHeapBarrier|) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| v_prenex_5 (store (store (store (select |c_old(#memory_$Pointer$.offset)| v_prenex_5) v_prenex_6 0) (+ v_prenex_6 4) 0) (+ v_prenex_6 8) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|))))) (exists ((alloc_or_die_master_~ptr~1.base Int) (alloc_or_die_master_~ptr~1.offset Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) alloc_or_die_master_~ptr~1.offset 0) (+ alloc_or_die_master_~ptr~1.offset 4) 0) (+ alloc_or_die_master_~ptr~1.offset 8) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))))) is different from true [2020-07-20 22:02:53,329 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:02:53,347 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-20 22:02:53,348 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 22:02:53,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 22:02:53,353 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 22:02:53,354 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 22:02:53,355 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_BEFORE_CALL_6| vanished before elimination [2020-07-20 22:02:53,355 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 22:02:53,356 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:99, output treesize:1 [2020-07-20 22:02:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 126 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-07-20 22:02:53,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:02:55,742 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:02:57,750 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_alloc_or_die_master_~ptr~1.offset_114 Int) (v_alloc_or_die_master_~ptr~1.base_110 Int)) (or (= 0 (select (select (store |c_#memory_$Pointer$.offset| v_alloc_or_die_master_~ptr~1.base_110 (store (store (store (select |c_#memory_$Pointer$.offset| v_alloc_or_die_master_~ptr~1.base_110) v_alloc_or_die_master_~ptr~1.offset_114 0) (+ v_alloc_or_die_master_~ptr~1.offset_114 4) 0) (+ v_alloc_or_die_master_~ptr~1.offset_114 8) 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)) (< |c_#StackHeapBarrier| (+ v_alloc_or_die_master_~ptr~1.base_110 1)))) (forall ((v_alloc_or_die_master_~ptr~1.offset_114 Int) (v_alloc_or_die_master_~ptr~1.base_110 Int)) (or (= (select (select (store |c_#memory_$Pointer$.base| v_alloc_or_die_master_~ptr~1.base_110 (store (store (store (select |c_#memory_$Pointer$.base| v_alloc_or_die_master_~ptr~1.base_110) v_alloc_or_die_master_~ptr~1.offset_114 0) (+ v_alloc_or_die_master_~ptr~1.offset_114 4) 0) (+ v_alloc_or_die_master_~ptr~1.offset_114 8) 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0) (< |c_#StackHeapBarrier| (+ v_alloc_or_die_master_~ptr~1.base_110 1))))) is different from false [2020-07-20 22:02:57,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964341989] [2020-07-20 22:02:57,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:02:57,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-20 22:02:57,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672342405] [2020-07-20 22:02:57,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 22:02:57,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:02:57,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 22:02:57,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=45, Unknown=7, NotChecked=102, Total=182 [2020-07-20 22:02:57,755 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand 13 states. [2020-07-20 22:03:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:03:02,785 INFO L93 Difference]: Finished difference Result 403 states and 480 transitions. [2020-07-20 22:03:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 22:03:02,786 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 157 [2020-07-20 22:03:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:03:02,793 INFO L225 Difference]: With dead ends: 403 [2020-07-20 22:03:02,793 INFO L226 Difference]: Without dead ends: 212 [2020-07-20 22:03:02,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=32, Invalid=57, Unknown=7, NotChecked=114, Total=210 [2020-07-20 22:03:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-07-20 22:03:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2020-07-20 22:03:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-20 22:03:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2020-07-20 22:03:02,844 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 157 [2020-07-20 22:03:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:03:02,845 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2020-07-20 22:03:02,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 22:03:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2020-07-20 22:03:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 22:03:02,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:03:02,850 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 22:03:03,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:03:03,066 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:03:03,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:03:03,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1632845278, now seen corresponding path program 1 times [2020-07-20 22:03:03,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:03:03,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715105309] [2020-07-20 22:03:03,068 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