/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 NOT_INCREMENTALLY -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 [2020-07-21 11:14:01,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:14:01,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:14:01,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:14:01,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:14:01,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:14:01,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:14:01,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:14:01,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:14:01,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:14:01,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:14:01,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:14:01,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:14:01,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:14:01,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:14:01,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:14:01,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:14:01,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:14:01,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:14:01,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:14:01,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:14:01,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:14:01,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:14:01,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:14:01,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:14:01,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:14:01,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:14:01,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:14:01,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:14:01,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:14:01,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:14:01,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:14:01,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:14:01,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:14:01,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:14:01,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:14:01,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:14:01,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:14:01,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:14:01,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:14:01,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:14:01,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:14:01,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:14:01,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:14:01,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:14:01,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:14:01,671 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:14:01,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:14:01,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:14:01,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:14:01,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:14:01,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:14:01,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:14:01,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:14:01,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:14:01,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:14:01,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:14:01,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:14:01,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:14:01,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:14:01,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:14:01,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:14:01,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:14:01,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:14:01,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:14:01,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:14:01,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:14:01,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:14:01,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:01,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:14:01,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:14:01,682 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 -> NOT_INCREMENTALLY [2020-07-21 11:14:02,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:14:02,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:14:02,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:14:02,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:14:02,062 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:14:02,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-21 11:14:02,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6023aab0f/b0cc6a8ba1d04fbea8c649e29c7a7bbc/FLAGcb05c8542 [2020-07-21 11:14:02,788 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:14:02,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-21 11:14:02,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6023aab0f/b0cc6a8ba1d04fbea8c649e29c7a7bbc/FLAGcb05c8542 [2020-07-21 11:14:03,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6023aab0f/b0cc6a8ba1d04fbea8c649e29c7a7bbc [2020-07-21 11:14:03,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:14:03,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:14:03,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:14:03,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:14:03,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:14:03,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1941cf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03, skipping insertion in model container [2020-07-21 11:14:03,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:14:03,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:14:03,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:14:03,730 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:14:03,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:14:03,865 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:14:03,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03 WrapperNode [2020-07-21 11:14:03,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:14:03,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:14:03,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:14:03,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:14:03,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... [2020-07-21 11:14:03,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:14:03,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:14:03,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:14:03,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:14:03,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:14:04,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:14:04,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:14:04,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-21 11:14:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 11:14:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 11:14:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-21 11:14:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-21 11:14:04,043 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-21 11:14:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-21 11:14:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-21 11:14:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-21 11:14:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-21 11:14:04,044 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-21 11:14:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-21 11:14:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-21 11:14:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-21 11:14:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-21 11:14:04,045 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-21 11:14:04,046 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-21 11:14:04,046 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-21 11:14:04,046 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-21 11:14:04,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:14:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:14:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 11:14:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 11:14:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 11:14:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 11:14:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 11:14:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 11:14:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 11:14:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 11:14:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 11:14:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 11:14:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 11:14:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 11:14:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 11:14:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 11:14:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 11:14:04,049 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 11:14:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 11:14:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 11:14:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 11:14:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 11:14:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 11:14:04,050 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 11:14:04,051 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 11:14:04,052 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 11:14:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 11:14:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 11:14:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 11:14:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 11:14:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 11:14:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 11:14:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 11:14:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 11:14:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 11:14:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 11:14:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:14:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:14:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 11:14:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:14:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 11:14:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 11:14:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 11:14:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 11:14:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 11:14:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:14:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 11:14:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 11:14:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 11:14:04,057 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 11:14:04,058 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 11:14:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 11:14:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 11:14:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 11:14:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 11:14:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 11:14:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 11:14:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 11:14:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 11:14:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 11:14:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 11:14:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 11:14:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 11:14:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 11:14:04,062 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 11:14:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 11:14:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 11:14:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 11:14:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 11:14:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 11:14:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-21 11:14:04,064 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-21 11:14:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 11:14:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-21 11:14:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:14:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-21 11:14:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 11:14:04,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:14:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-21 11:14:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-21 11:14:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-21 11:14:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-21 11:14:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-21 11:14:04,066 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-21 11:14:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-21 11:14:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-21 11:14:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-21 11:14:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-21 11:14:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-21 11:14:04,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:14:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:14:04,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:14:04,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:14:04,980 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-21 11:14:04,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:14:04 BoogieIcfgContainer [2020-07-21 11:14:04,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:14:04,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:14:04,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:14:04,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:14:04,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:14:03" (1/3) ... [2020-07-21 11:14:04,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5fd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:14:04, skipping insertion in model container [2020-07-21 11:14:04,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:14:03" (2/3) ... [2020-07-21 11:14:04,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5fd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:14:04, skipping insertion in model container [2020-07-21 11:14:04,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:14:04" (3/3) ... [2020-07-21 11:14:04,995 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-07-21 11:14:05,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:14:05,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:14:05,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:14:05,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:14:05,051 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:14:05,051 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:14:05,051 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:14:05,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:14:05,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:14:05,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:14:05,052 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:14:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-21 11:14:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-21 11:14:05,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:14:05,087 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] [2020-07-21 11:14:05,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:14:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:14:05,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-07-21 11:14:05,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:14:05,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635035076] [2020-07-21 11:14:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:14:05,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:14:05,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:14:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 11:14:05,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:14:05,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635035076] [2020-07-21 11:14:05,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:14:05,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:14:05,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921669879] [2020-07-21 11:14:05,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:14:05,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:14:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:14:05,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:14:05,453 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 2 states. [2020-07-21 11:14:05,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:14:05,537 INFO L93 Difference]: Finished difference Result 329 states and 517 transitions. [2020-07-21 11:14:05,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:14:05,539 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2020-07-21 11:14:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:14:05,554 INFO L225 Difference]: With dead ends: 329 [2020-07-21 11:14:05,554 INFO L226 Difference]: Without dead ends: 155 [2020-07-21 11:14:05,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:14:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-21 11:14:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-07-21 11:14:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-21 11:14:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-07-21 11:14:05,624 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-07-21 11:14:05,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:14:05,624 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-07-21 11:14:05,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:14:05,624 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-07-21 11:14:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 11:14:05,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:14:05,629 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] [2020-07-21 11:14:05,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:05,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:14:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:14:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-07-21 11:14:05,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:14:05,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035968115] [2020-07-21 11:14:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:14:06,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 11:14:06,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:14:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-21 11:14:06,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:14:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-21 11:14:06,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035968115] [2020-07-21 11:14:06,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:14:06,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 11:14:06,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719827129] [2020-07-21 11:14:06,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:14:06,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:14:06,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:14:06,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:14:06,531 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 6 states. [2020-07-21 11:14:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:14:06,659 INFO L93 Difference]: Finished difference Result 316 states and 390 transitions. [2020-07-21 11:14:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:14:06,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-21 11:14:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:14:06,664 INFO L225 Difference]: With dead ends: 316 [2020-07-21 11:14:06,664 INFO L226 Difference]: Without dead ends: 168 [2020-07-21 11:14:06,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:14:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-07-21 11:14:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-07-21 11:14:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-21 11:14:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-07-21 11:14:06,690 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-07-21 11:14:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:14:06,690 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-07-21 11:14:06,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:14:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-07-21 11:14:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-21 11:14:06,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:14:06,696 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] [2020-07-21 11:14:06,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:06,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:14:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:14:06,912 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-07-21 11:14:06,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:14:06,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476628876] [2020-07-21 11:14:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:14:07,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 11:14:07,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:14:07,436 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:07,437 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 [2020-07-21 11:14:07,438 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:07,470 INFO L624 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-07-21 11:14:07,473 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:14:07,473 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-07-21 11:14:07,518 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 [2020-07-21 11:14:07,519 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:07,521 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:07,521 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:14:07,522 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-21 11:14:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-21 11:14:07,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:14:08,719 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 [2020-07-21 11:14:08,720 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 11:14:08,777 INFO L624 ElimStorePlain]: treesize reduction 38, result has 47.2 percent of original size [2020-07-21 11:14:08,779 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-21 11:14:08,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:7 [2020-07-21 11:14:08,791 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 [2020-07-21 11:14:08,793 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 11:14:08,909 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-21 11:14:08,910 INFO L624 ElimStorePlain]: treesize reduction 127, result has 21.6 percent of original size [2020-07-21 11:14:08,911 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-07-21 11:14:08,912 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2020-07-21 11:14:09,090 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:14:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-21 11:14:09,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476628876] [2020-07-21 11:14:09,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:14:09,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-07-21 11:14:09,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011575022] [2020-07-21 11:14:09,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 11:14:09,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:14:09,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 11:14:09,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-07-21 11:14:09,339 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 21 states. [2020-07-21 11:14:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:14:10,087 INFO L93 Difference]: Finished difference Result 299 states and 361 transitions. [2020-07-21 11:14:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 11:14:10,088 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 154 [2020-07-21 11:14:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:14:10,093 INFO L225 Difference]: With dead ends: 299 [2020-07-21 11:14:10,093 INFO L226 Difference]: Without dead ends: 229 [2020-07-21 11:14:10,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-07-21 11:14:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-21 11:14:10,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2020-07-21 11:14:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-21 11:14:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2020-07-21 11:14:10,115 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 154 [2020-07-21 11:14:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:14:10,118 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2020-07-21 11:14:10,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 11:14:10,119 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2020-07-21 11:14:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-21 11:14:10,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:14:10,122 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] [2020-07-21 11:14:10,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:10,332 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:14:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:14:10,333 INFO L82 PathProgramCache]: Analyzing trace with hash -547179998, now seen corresponding path program 1 times [2020-07-21 11:14:10,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:14:10,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516054874] [2020-07-21 11:14:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:14:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:14:10,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 313 conjunts are in the unsatisfiable core [2020-07-21 11:14:10,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:14:10,720 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-21 11:14:10,720 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:10,747 INFO L624 ElimStorePlain]: treesize reduction 4, result has 86.7 percent of original size [2020-07-21 11:14:10,748 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:14:10,749 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:26 [2020-07-21 11:14:10,781 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-07-21 11:14:10,782 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:10,797 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:10,818 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-21 11:14:10,819 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:10,834 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:10,843 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-21 11:14:10,844 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:10,855 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:10,857 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:14:10,858 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:35, output treesize:13 [2020-07-21 11:14:11,602 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-07-21 11:14:11,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-07-21 11:14:11,653 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:11,707 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:11,715 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2020-07-21 11:14:11,715 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:11,761 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:14:11,770 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 62 treesize of output 58 [2020-07-21 11:14:11,772 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:11,897 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-07-21 11:14:11,898 INFO L624 ElimStorePlain]: treesize reduction 16, result has 84.6 percent of original size [2020-07-21 11:14:11,911 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 62 treesize of output 58 [2020-07-21 11:14:11,912 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 11:14:12,048 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-07-21 11:14:12,050 INFO L624 ElimStorePlain]: treesize reduction 16, result has 85.3 percent of original size [2020-07-21 11:14:12,054 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:14:12,054 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,055 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,056 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,057 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,060 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:14:12,061 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,062 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,063 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,064 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:14:12,065 INFO L544 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 2 dim-1 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-21 11:14:12,065 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:93, output treesize:27 [2020-07-21 11:14:14,398 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 11:14:15,672 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 11:14:17,802 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 11:14:56,043 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 11:15:38,272 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 11:15:46,484 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 43 [2020-07-21 11:17:01,729 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 46 [2020-07-21 11:18:00,150 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 46 [2020-07-21 11:18:25,662 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-07-21 11:18:25,874 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:19:14,594 WARN L193 SmtUtils]: Spent 7.72 s on a formula simplification that was a NOOP. DAG size: 188 [2020-07-21 11:19:14,601 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:19:17,036 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse23 (< 0 |c_#StackHeapBarrier|))) (or (and (exists ((dll_insert_slave_~next~0.base Int) (alloc_or_die_slave_~ptr~0.offset Int) (dll_insert_slave_~dll.offset Int) (v_prenex_12 Int) (v_prenex_11 Int) (alloc_or_die_slave_~ptr~0.base Int) (v_prenex_10 Int) (dll_insert_slave_~next~0.offset Int) (dll_insert_slave_~item~0.offset Int) (|v_dll_insert_master_#t~ret19.base_76| Int) (v_prenex_8 Int) (v_prenex_9 Int) (dll_insert_master_~dll.offset Int) (v_prenex_7 Int) (|dll_create_generic_~#dll~0.base| Int) (dll_insert_master_~item~1.base Int) (|alloc_or_die_master_#t~malloc3.base| Int) (dll_insert_slave_~item~0.base Int) (|v_dll_insert_master_#t~ret19.offset_49| Int)) (let ((.cse22 (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0))) (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base .cse22) |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset)) (.cse13 (store (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0))) (let ((.cse6 (+ alloc_or_die_slave_~ptr~0.offset 4)) (.cse9 (+ v_prenex_8 4)) (.cse11 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base .cse13) |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset)) (.cse12 (+ .cse0 4))) (and (<= dll_insert_slave_~item~0.base alloc_or_die_slave_~ptr~0.base) (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| |alloc_or_die_master_#t~malloc3.base|)) (not (= 0 .cse0)) (= (select (store |c_old(#valid)| |alloc_or_die_master_#t~malloc3.base| 1) |dll_create_generic_~#dll~0.base|) 0) (= |c_#memory_$Pointer$.base| (let ((.cse1 (let ((.cse2 (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse7 (let ((.cse8 (let ((.cse10 (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base (store .cse13 0 .cse11)))) (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 dll_insert_master_~item~1.base))))) (store .cse8 v_prenex_12 (store (store (store (select .cse8 v_prenex_12) v_prenex_8 0) .cse9 0) v_prenex_11 v_prenex_7))))) (store .cse7 |dll_create_generic_~#dll~0.base| (store (select .cse7 |dll_create_generic_~#dll~0.base|) v_prenex_9 v_prenex_12))))) (store .cse5 alloc_or_die_slave_~ptr~0.base (store (store (select .cse5 alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) .cse6 0))))) (store .cse4 dll_insert_slave_~item~0.base (store (select .cse4 dll_insert_slave_~item~0.base) dll_insert_slave_~item~0.offset dll_insert_slave_~next~0.base))))) (store .cse3 |dll_create_generic_~#dll~0.base| (store (select .cse3 |dll_create_generic_~#dll~0.base|) dll_insert_slave_~dll.offset dll_insert_slave_~item~0.base))))) (store .cse2 dll_insert_master_~item~1.base (store (select .cse2 dll_insert_master_~item~1.base) 8 |v_dll_insert_master_#t~ret19.base_76|))))) (store .cse1 |c_dll_insert_master_#in~dll.base| (store (select .cse1 |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset dll_insert_master_~item~1.base)))) (<= (+ v_prenex_12 1) |c_#StackHeapBarrier|) (= (let ((.cse14 (let ((.cse15 (let ((.cse16 (let ((.cse17 (let ((.cse18 (let ((.cse19 (let ((.cse20 (let ((.cse21 (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store .cse22 0 .cse0)))) (store .cse21 .cse11 (store (select .cse21 .cse11) .cse12 0))))) (store .cse20 v_prenex_12 (store (store (store (select .cse20 v_prenex_12) v_prenex_8 0) .cse9 0) v_prenex_11 v_prenex_10))))) (store .cse19 |dll_create_generic_~#dll~0.base| (store (select .cse19 |dll_create_generic_~#dll~0.base|) v_prenex_9 v_prenex_11))))) (store .cse18 alloc_or_die_slave_~ptr~0.base (store (store (select .cse18 alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) .cse6 0))))) (store .cse17 dll_insert_slave_~item~0.base (store (select .cse17 dll_insert_slave_~item~0.base) dll_insert_slave_~item~0.offset dll_insert_slave_~next~0.offset))))) (store .cse16 |dll_create_generic_~#dll~0.base| (store (select .cse16 |dll_create_generic_~#dll~0.base|) dll_insert_slave_~dll.offset dll_insert_slave_~item~0.offset))))) (store .cse15 dll_insert_master_~item~1.base (store (select .cse15 dll_insert_master_~item~1.base) 8 |v_dll_insert_master_#t~ret19.offset_49|))))) (store .cse14 |c_dll_insert_master_#in~dll.base| (store (select .cse14 |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset 0))) |c_#memory_$Pointer$.offset|) (<= dll_insert_master_~item~1.base |alloc_or_die_master_#t~malloc3.base|) (< |alloc_or_die_master_#t~malloc3.base| |c_#StackHeapBarrier|)))))) .cse23) (and .cse23 (exists ((v_prenex_27 Int) (v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_18 Int) (v_prenex_17 Int) (v_prenex_28 Int) (v_prenex_23 Int) (v_prenex_22 Int) (v_prenex_25 Int) (v_prenex_14 Int) (v_prenex_24 Int) (v_prenex_13 Int) (v_prenex_21 Int) (v_prenex_20 Int) (|v_dll_insert_master_#t~ret19.base_76| Int) (dll_insert_master_~dll.offset Int) (dll_insert_master_~item~1.base Int) (v_prenex_19 Int) (|v_dll_insert_master_#t~ret19.offset_49| Int)) (let ((.cse45 (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0))) (let ((.cse46 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base .cse45) |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset)) (.cse36 (store (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0))) (let ((.cse30 (+ v_prenex_13 4)) (.cse33 (+ v_prenex_27 4)) (.cse24 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base .cse36) |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset)) (.cse35 (+ .cse46 4))) (and (not (= 0 .cse24)) (= (let ((.cse25 (let ((.cse26 (let ((.cse27 (let ((.cse28 (let ((.cse29 (let ((.cse31 (let ((.cse32 (let ((.cse34 (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base (store .cse36 0 .cse24)))) (store .cse34 .cse24 (store (select .cse34 .cse24) .cse35 dll_insert_master_~item~1.base))))) (store .cse32 v_prenex_22 (store (store (store (select .cse32 v_prenex_22) v_prenex_27 0) .cse33 0) v_prenex_23 v_prenex_16))))) (store .cse31 v_prenex_17 (store (select .cse31 v_prenex_17) v_prenex_28 v_prenex_22))))) (store .cse29 v_prenex_24 (store (store (select .cse29 v_prenex_24) v_prenex_13 0) .cse30 0))))) (store .cse28 v_prenex_19 (store (select .cse28 v_prenex_19) v_prenex_15 v_prenex_20))))) (store .cse27 v_prenex_17 (store (select .cse27 v_prenex_17) v_prenex_21 v_prenex_19))))) (store .cse26 dll_insert_master_~item~1.base (store (select .cse26 dll_insert_master_~item~1.base) 8 |v_dll_insert_master_#t~ret19.base_76|))))) (store .cse25 |c_dll_insert_master_#in~dll.base| (store (select .cse25 |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset dll_insert_master_~item~1.base))) |c_#memory_$Pointer$.base|) (<= dll_insert_master_~item~1.base v_prenex_18) (<= v_prenex_19 v_prenex_24) (= 0 (select (store |c_old(#valid)| v_prenex_18 1) v_prenex_17)) (= (let ((.cse37 (let ((.cse38 (let ((.cse39 (let ((.cse40 (let ((.cse41 (let ((.cse42 (let ((.cse43 (let ((.cse44 (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store .cse45 0 .cse46)))) (store .cse44 .cse24 (store (select .cse44 .cse24) .cse35 0))))) (store .cse43 v_prenex_22 (store (store (store (select .cse43 v_prenex_22) v_prenex_27 0) .cse33 0) v_prenex_23 v_prenex_25))))) (store .cse42 v_prenex_17 (store (select .cse42 v_prenex_17) v_prenex_28 v_prenex_23))))) (store .cse41 v_prenex_24 (store (store (select .cse41 v_prenex_24) v_prenex_13 0) .cse30 0))))) (store .cse40 v_prenex_19 (store (select .cse40 v_prenex_19) v_prenex_15 v_prenex_14))))) (store .cse39 v_prenex_17 (store (select .cse39 v_prenex_17) v_prenex_21 v_prenex_15))))) (store .cse38 dll_insert_master_~item~1.base (store (select .cse38 dll_insert_master_~item~1.base) 8 |v_dll_insert_master_#t~ret19.offset_49|))))) (store .cse37 |c_dll_insert_master_#in~dll.base| (store (select .cse37 |c_dll_insert_master_#in~dll.base|) dll_insert_master_~dll.offset 0))) |c_#memory_$Pointer$.offset|) (<= (+ v_prenex_22 1) |c_#StackHeapBarrier|) (= 0 (select |c_old(#valid)| v_prenex_18)) (<= (+ v_prenex_24 1) |c_#StackHeapBarrier|) (< v_prenex_18 |c_#StackHeapBarrier|))))))))) is different from false [2020-07-21 11:21:39,425 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-07-21 11:21:39,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516054874] [2020-07-21 11:21:39,427 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-07-21 11:21:39,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:21:39,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-21 11:21:39,430 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-21 11:21:39,430 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:21:39,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:39,673 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-21 11:21:39,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:21:39 BoogieIcfgContainer [2020-07-21 11:21:39,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:21:39,676 INFO L168 Benchmark]: Toolchain (without parser) took 456580.00 ms. Allocated memory was 138.4 MB in the beginning and 372.8 MB in the end (delta: 234.4 MB). Free memory was 101.7 MB in the beginning and 222.5 MB in the end (delta: -120.8 MB). Peak memory consumption was 113.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:39,677 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:21:39,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.40 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.5 MB in the beginning and 166.4 MB in the end (delta: -64.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:39,679 INFO L168 Benchmark]: Boogie Preprocessor took 97.09 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 161.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:39,679 INFO L168 Benchmark]: RCFGBuilder took 1020.48 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 161.7 MB in the beginning and 204.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:39,680 INFO L168 Benchmark]: TraceAbstraction took 454687.37 ms. Allocated memory was 236.5 MB in the beginning and 372.8 MB in the end (delta: 136.3 MB). Free memory was 204.1 MB in the beginning and 222.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:39,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.40 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.5 MB in the beginning and 166.4 MB in the end (delta: -64.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.09 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 161.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1020.48 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 161.7 MB in the beginning and 204.1 MB in the end (delta: -42.4 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 454687.37 ms. Allocated memory was 236.5 MB in the beginning and 372.8 MB in the end (delta: 136.3 MB). Free memory was 204.1 MB in the beginning and 222.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 117.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 536]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L672] CALL, EXPR dll_create_master() [L630] CALL, EXPR dll_create_generic(dll_insert_master) [L577] void *dll = ((void *)0); [L578] CALL insert_fnc(&dll) [L620] CALL, EXPR alloc_or_die_master() [L558] struct master_item *ptr = malloc(sizeof(*ptr)); [L559] COND FALSE !(!ptr) [L561] ptr->next = ((void *)0) [L562] ptr->prev = ((void *)0) [L563] ptr->slave = ((void *)0) [L564] return ptr; [L620] RET, EXPR alloc_or_die_master() [L620] struct master_item *item = alloc_or_die_master(); [L621] EXPR \read(**dll) [L621] struct master_item *next = *dll; [L622] item->next = next [L623] COND TRUE \read(*next) [L624] next->prev = item [L625] CALL, EXPR dll_create_slave() [L586] CALL, EXPR dll_create_generic(dll_insert_slave) [L577] void *dll = ((void *)0); [L578] CALL insert_fnc(&dll) [L568] CALL, EXPR alloc_or_die_slave() [L544] struct slave_item *ptr = malloc(sizeof(*ptr)); [L545] COND FALSE !(!ptr) [L547] ptr->next = ((void *)0) [L548] ptr->prev = ((void *)0) [L549] return ptr; [L568] RET, EXPR alloc_or_die_slave() [L568] struct slave_item *item = alloc_or_die_slave(); [L569] EXPR \read(**dll) [L569] struct slave_item *next = *dll; [L570] item->next = next [L571] COND FALSE !(\read(*next)) [L573] *dll = item [L578] RET insert_fnc(&dll) [L579] CALL insert_fnc(&dll) [L568] CALL, EXPR alloc_or_die_slave() [L544] struct slave_item *ptr = malloc(sizeof(*ptr)); [L545] COND FALSE !(!ptr) [L547] ptr->next = ((void *)0) [L548] ptr->prev = ((void *)0) [L549] return ptr; [L568] RET, EXPR alloc_or_die_slave() [L568] struct slave_item *item = alloc_or_die_slave(); [L569] EXPR \read(**dll) [L569] struct slave_item *next = *dll; [L570] item->next = next [L571] COND FALSE !(\read(*next)) [L573] *dll = item [L579] RET insert_fnc(&dll) [L580] COND FALSE !(__VERIFIER_nondet_int()) [L582] EXPR \read(*dll) [L582] return dll; [L577] void *dll = ((void *)0); [L582] return dll; [L586] RET, EXPR dll_create_generic(dll_insert_slave) [L586] return dll_create_generic(dll_insert_slave); [L625] RET, EXPR dll_create_slave() [L625] item->slave = dll_create_slave() [L626] *dll = item [L578] RET insert_fnc(&dll) [L579] CALL insert_fnc(&dll) [L620] CALL, EXPR alloc_or_die_master() [L558] struct master_item *ptr = malloc(sizeof(*ptr)); [L559] COND FALSE !(!ptr) [L561] ptr->next = ((void *)0) [L562] ptr->prev = ((void *)0) [L563] ptr->slave = ((void *)0) [L564] return ptr; [L620] RET, EXPR alloc_or_die_master() [L620] struct master_item *item = alloc_or_die_master(); [L621] EXPR \read(**dll) [L621] struct master_item *next = *dll; [L622] item->next = next [L623] COND TRUE \read(*next) [L624] next->prev = item [L625] CALL, EXPR dll_create_slave() [L586] CALL, EXPR dll_create_generic(dll_insert_slave) [L577] void *dll = ((void *)0); [L578] CALL insert_fnc(&dll) [L568] CALL, EXPR alloc_or_die_slave() [L544] struct slave_item *ptr = malloc(sizeof(*ptr)); [L545] COND FALSE !(!ptr) [L547] ptr->next = ((void *)0) [L548] ptr->prev = ((void *)0) [L549] return ptr; [L568] RET, EXPR alloc_or_die_slave() [L568] struct slave_item *item = alloc_or_die_slave(); [L569] EXPR \read(**dll) [L569] struct slave_item *next = *dll; [L570] item->next = next [L571] COND FALSE !(\read(*next)) [L573] *dll = item [L578] RET insert_fnc(&dll) [L579] CALL insert_fnc(&dll) [L568] CALL, EXPR alloc_or_die_slave() [L544] struct slave_item *ptr = malloc(sizeof(*ptr)); [L545] COND FALSE !(!ptr) [L547] ptr->next = ((void *)0) [L548] ptr->prev = ((void *)0) [L549] return ptr; [L568] RET, EXPR alloc_or_die_slave() [L568] struct slave_item *item = alloc_or_die_slave(); [L569] EXPR \read(**dll) [L569] struct slave_item *next = *dll; [L570] item->next = next [L571] COND FALSE !(\read(*next)) [L573] *dll = item [L579] RET insert_fnc(&dll) [L580] COND FALSE !(__VERIFIER_nondet_int()) [L582] EXPR \read(*dll) [L582] return dll; [L577] void *dll = ((void *)0); [L582] return dll; [L586] RET, EXPR dll_create_generic(dll_insert_slave) [L586] return dll_create_generic(dll_insert_slave); [L625] RET, EXPR dll_create_slave() [L625] item->slave = dll_create_slave() [L626] *dll = item [L579] RET insert_fnc(&dll) [L580] COND FALSE !(__VERIFIER_nondet_int()) [L582] EXPR \read(*dll) [L582] return dll; [L577] void *dll = ((void *)0); [L582] return dll; [L630] RET, EXPR dll_create_generic(dll_insert_master) [L630] return dll_create_generic(dll_insert_master); [L672] RET, EXPR dll_create_master() [L672] struct master_item *dll = dll_create_master(); [L673] CALL inspect_full(dll) [L645] CALL inspect_base(dll) [L634] COND FALSE !(!(dll)) [L635] EXPR dll->next [L635] COND TRUE !(dll->next) [L635] CALL fail() [L536] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 454.5s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 556 SDtfs, 154 SDslu, 3865 SDs, 0 SdLazy, 690 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 492 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 35 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 113085 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1387 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 401/411 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...