/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 05:45:59,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:45:59,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:45:59,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:45:59,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:45:59,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:45:59,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:45:59,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:45:59,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:45:59,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:45:59,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:45:59,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:45:59,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:45:59,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:45:59,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:45:59,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:45:59,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:45:59,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:45:59,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:45:59,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:45:59,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:45:59,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:45:59,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:45:59,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:45:59,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 05:45:59,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 05:45:59,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 05:45:59,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 05:45:59,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 05:45:59,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 05:45:59,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 05:45:59,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 05:45:59,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 05:45:59,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 05:45:59,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 05:45:59,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 05:45:59,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 05:45:59,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 05:45:59,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:45:59,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:45:59,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:45:59,816 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 05:45:59,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:45:59,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:45:59,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:45:59,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:45:59,834 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:45:59,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:45:59,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:45:59,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:45:59,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:45:59,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:45:59,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:45:59,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:45:59,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:45:59,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:45:59,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:45:59,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:45:59,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:45:59,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:45:59,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:45:59,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:45:59,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:45:59,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:45:59,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:45:59,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:45:59,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:45:59,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:45:59,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:45:59,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:45:59,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:45:59,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:46:00,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:46:00,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:46:00,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:46:00,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:46:00,158 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:46:00,159 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-20 05:46:00,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18da3908c/5df2e136ced84541bbbad1c4fc5fbcaf/FLAG4003f58d7 [2020-07-20 05:46:00,871 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:46:00,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-20 05:46:00,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18da3908c/5df2e136ced84541bbbad1c4fc5fbcaf/FLAG4003f58d7 [2020-07-20 05:46:01,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18da3908c/5df2e136ced84541bbbad1c4fc5fbcaf [2020-07-20 05:46:01,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:46:01,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:46:01,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:01,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:46:01,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:46:01,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:01,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af4a478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01, skipping insertion in model container [2020-07-20 05:46:01,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:01,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:46:01,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:46:01,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:01,770 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:46:01,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:01,922 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:46:01,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01 WrapperNode [2020-07-20 05:46:01,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:01,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:46:01,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:46:01,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:46:01,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:01,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:01,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:01,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:01,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:02,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:02,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (1/1) ... [2020-07-20 05:46:02,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:46:02,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:46:02,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:46:02,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:46:02,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (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 05:46:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-20 05:46:02,104 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-20 05:46:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-20 05:46:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-20 05:46:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-20 05:46:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-20 05:46:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-20 05:46:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-20 05:46:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-20 05:46:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-20 05:46:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-20 05:46:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-20 05:46:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-20 05:46:02,107 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-20 05:46:02,107 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-20 05:46:02,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:46:02,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:46:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 05:46:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 05:46:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 05:46:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 05:46:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 05:46:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 05:46:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 05:46:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 05:46:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 05:46:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 05:46:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 05:46:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 05:46:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 05:46:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 05:46:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 05:46:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 05:46:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 05:46:02,113 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 05:46:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 05:46:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 05:46:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 05:46:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 05:46:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 05:46:02,114 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 05:46:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 05:46:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 05:46:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 05:46:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 05:46:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 05:46:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 05:46:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 05:46:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 05:46:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 05:46:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 05:46:02,120 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 05:46:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 05:46:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 05:46:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 05:46:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 05:46:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 05:46:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 05:46:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:46:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-20 05:46:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-20 05:46:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 05:46:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 05:46:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-20 05:46:02,123 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:46:02,124 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-20 05:46:02,125 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-20 05:46:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-20 05:46:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-20 05:46:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-20 05:46:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:46:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:46:02,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:46:02,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:46:02,982 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-20 05:46:02,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:02 BoogieIcfgContainer [2020-07-20 05:46:02,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:46:02,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:46:02,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:46:02,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:46:02,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:46:01" (1/3) ... [2020-07-20 05:46:02,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529731d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:02, skipping insertion in model container [2020-07-20 05:46:02,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:01" (2/3) ... [2020-07-20 05:46:02,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529731d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:02, skipping insertion in model container [2020-07-20 05:46:02,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:02" (3/3) ... [2020-07-20 05:46:02,997 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-07-20 05:46:03,009 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:46:03,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:46:03,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:46:03,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:46:03,064 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:46:03,064 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:46:03,064 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:46:03,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:46:03,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:46:03,065 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:46:03,065 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:46:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-20 05:46:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 05:46:03,102 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:03,104 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 05:46:03,104 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:03,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:03,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-07-20 05:46:03,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:03,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622280447] [2020-07-20 05:46:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e34479 [2020-07-20 05:46:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 05:46:03,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622280447] [2020-07-20 05:46:03,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:03,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:46:03,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933857162] [2020-07-20 05:46:03,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:46:03,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:03,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:46:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:46:03,881 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-07-20 05:46:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:04,395 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-07-20 05:46:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:46:04,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-07-20 05:46:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:04,414 INFO L225 Difference]: With dead ends: 343 [2020-07-20 05:46:04,414 INFO L226 Difference]: Without dead ends: 166 [2020-07-20 05:46:04,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:46:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-20 05:46:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-07-20 05:46:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-20 05:46:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-07-20 05:46:04,504 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-07-20 05:46:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:04,505 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-07-20 05:46:04,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:46:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-07-20 05:46:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 05:46:04,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:04,509 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, 1] [2020-07-20 05:46:04,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:46:04,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:04,510 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-07-20 05:46:04,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:04,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809413187] [2020-07-20 05:46:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e34479 [2020-07-20 05:46:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 05:46:04,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809413187] [2020-07-20 05:46:04,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688680801] [2020-07-20 05:46:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f1e3cbd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:46:05,205 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f1e3cbd issued 2 check-sat command(s) [2020-07-20 05:46:05,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:46:05,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 05:46:05,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:46:05,328 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 05:46:05,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 05:46:05,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 13 [2020-07-20 05:46:05,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144194320] [2020-07-20 05:46:05,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:46:05,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:05,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:46:05,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:46:05,340 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 5 states. [2020-07-20 05:46:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:05,528 INFO L93 Difference]: Finished difference Result 316 states and 390 transitions. [2020-07-20 05:46:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 05:46:05,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-07-20 05:46:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:05,533 INFO L225 Difference]: With dead ends: 316 [2020-07-20 05:46:05,533 INFO L226 Difference]: Without dead ends: 168 [2020-07-20 05:46:05,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-20 05:46:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-07-20 05:46:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-07-20 05:46:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 05:46:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-07-20 05:46:05,560 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-07-20 05:46:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:05,561 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-07-20 05:46:05,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:46:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-07-20 05:46:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-20 05:46:05,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:05,566 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 05:46:05,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 05:46:05,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:05,782 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-07-20 05:46:05,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:05,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392834325] [2020-07-20 05:46:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e34479 [2020-07-20 05:46:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-20 05:46:07,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392834325] [2020-07-20 05:46:07,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338134355] [2020-07-20 05:46:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a077977 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:46:23,346 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7a077977 issued 3 check-sat command(s) [2020-07-20 05:46:23,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:46:23,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-20 05:46:23,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:46:23,681 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 05:46:23,682 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 05:46:23,682 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 05:46:23,715 INFO L624 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-07-20 05:46:23,717 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 05:46:23,718 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-07-20 05:46:23,837 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 05:46:23,838 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 05:46:23,839 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 05:46:23,840 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 05:46:23,840 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-20 05:46:23,955 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 05:46:23,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:46:23,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 31 [2020-07-20 05:46:23,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519556240] [2020-07-20 05:46:23,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-20 05:46:23,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:23,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-20 05:46:23,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=862, Unknown=0, NotChecked=0, Total=930 [2020-07-20 05:46:23,959 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 31 states. [2020-07-20 05:46:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:28,649 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2020-07-20 05:46:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-20 05:46:28,650 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 154 [2020-07-20 05:46:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:28,658 INFO L225 Difference]: With dead ends: 411 [2020-07-20 05:46:28,658 INFO L226 Difference]: Without dead ends: 249 [2020-07-20 05:46:28,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=247, Invalid=2723, Unknown=0, NotChecked=0, Total=2970 [2020-07-20 05:46:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-20 05:46:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 205. [2020-07-20 05:46:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-20 05:46:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 243 transitions. [2020-07-20 05:46:28,724 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 243 transitions. Word has length 154 [2020-07-20 05:46:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:28,725 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 243 transitions. [2020-07-20 05:46:28,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-20 05:46:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 243 transitions. [2020-07-20 05:46:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 05:46:28,732 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:28,733 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, 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 05:46:28,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:46:28,934 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:28,934 INFO L82 PathProgramCache]: Analyzing trace with hash -477532124, now seen corresponding path program 1 times [2020-07-20 05:46:28,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:28,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623093087] [2020-07-20 05:46:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e34479 [2020-07-20 05:46:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-20 05:46:30,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623093087] [2020-07-20 05:46:30,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857360894] [2020-07-20 05:46:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d7d236b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:50:37,852 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d7d236b issued 3 check-sat command(s) [2020-07-20 05:50:37,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:50:42,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-20 05:50:42,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:50:42,950 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 05:50:42,950 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 05:50:42,954 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 05:50:42,955 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 05:50:42,955 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-07-20 05:50:42,969 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 05:50:42,969 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 05:50:42,973 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 05:50:42,974 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 05:50:42,974 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-07-20 05:50:43,907 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 05:50:44,842 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 05:50:46,706 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (dll_insert_slave_~item~0.base Int)) (and (<= (+ dll_insert_slave_~item~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~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 05:50:48,741 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (dll_insert_slave_~item~0.base Int)) (and (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~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|)) (<= (+ dll_insert_slave_~item~0.base 1) |c_#StackHeapBarrier|))) is different from true [2020-07-20 05:50:50,535 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (dll_insert_slave_~item~0.base Int)) (and (<= (+ dll_insert_slave_~item~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_slave_~item~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|) 0))) is different from true [2020-07-20 05:50:50,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 05:50:50,553 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 05:50:50,555 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 05:50:50,555 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 05:50:50,555 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:1 [2020-07-20 05:50:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 6 not checked. [2020-07-20 05:50:50,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:50:50,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 30 [2020-07-20 05:50:50,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053781906] [2020-07-20 05:50:50,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 05:50:50,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:50:50,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 05:50:50,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=631, Unknown=3, NotChecked=156, Total=870 [2020-07-20 05:50:50,607 INFO L87 Difference]: Start difference. First operand 205 states and 243 transitions. Second operand 30 states. [2020-07-20 05:50:51,829 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-20 05:50:52,746 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-20 05:50:56,884 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-07-20 05:51:02,922 WARN L193 SmtUtils]: Spent 3.77 s on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-07-20 05:51:07,025 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-07-20 05:51:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:51:08,735 INFO L93 Difference]: Finished difference Result 414 states and 502 transitions. [2020-07-20 05:51:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-20 05:51:08,736 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 157 [2020-07-20 05:51:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:51:08,740 INFO L225 Difference]: With dead ends: 414 [2020-07-20 05:51:08,740 INFO L226 Difference]: Without dead ends: 226 [2020-07-20 05:51:08,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 193 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=223, Invalid=1765, Unknown=4, NotChecked=264, Total=2256 [2020-07-20 05:51:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-20 05:51:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 213. [2020-07-20 05:51:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-07-20 05:51:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2020-07-20 05:51:08,764 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 157 [2020-07-20 05:51:08,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:51:08,764 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2020-07-20 05:51:08,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 05:51:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2020-07-20 05:51:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 05:51:08,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:51:08,767 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 05:51:08,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:51:08,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:51:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:51:08,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-07-20 05:51:08,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:51:08,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059249689] [2020-07-20 05:51:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e34479 [2020-07-20 05:51:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:11,397 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-07-20 05:51:11,599 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2020-07-20 05:51:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:51:27,907 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 49