./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:35:09,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:35:09,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:35:09,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:35:09,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:35:09,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:35:09,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:35:09,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:35:09,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:35:09,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:35:09,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:35:09,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:35:09,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:35:09,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:35:09,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:35:09,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:35:09,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:35:09,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:35:09,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:35:09,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:35:09,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:35:09,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:35:09,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:35:09,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:35:09,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:35:09,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:35:09,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:35:09,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:35:09,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:35:09,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:35:09,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:35:09,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:35:09,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:35:09,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:35:09,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:35:09,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:35:09,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:35:09,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:35:09,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:35:09,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:35:09,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:35:09,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:35:09,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:35:09,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:35:09,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:35:09,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:35:09,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:35:09,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:35:09,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:35:09,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:35:09,827 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:35:09,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:35:09,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:35:09,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:35:09,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:35:09,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:35:09,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:35:09,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:35:09,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:35:09,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:35:09,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:35:09,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:35:09,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:35:09,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:35:09,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:35:09,831 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:35:09,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:35:09,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:35:09,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:35:09,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2021-12-14 13:35:10,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:35:10,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:35:10,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:35:10,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:35:10,061 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:35:10,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-14 13:35:10,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ee80bf7/8c2a89239e254b578e3952e78124e570/FLAG976956b19 [2021-12-14 13:35:10,611 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:35:10,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2021-12-14 13:35:10,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ee80bf7/8c2a89239e254b578e3952e78124e570/FLAG976956b19 [2021-12-14 13:35:11,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ee80bf7/8c2a89239e254b578e3952e78124e570 [2021-12-14 13:35:11,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:35:11,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:35:11,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:35:11,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:35:11,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:35:11,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb5498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11, skipping insertion in model container [2021-12-14 13:35:11,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:35:11,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:35:11,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2021-12-14 13:35:11,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:35:11,423 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:35:11,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2021-12-14 13:35:11,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:35:11,507 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:35:11,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11 WrapperNode [2021-12-14 13:35:11,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:35:11,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:35:11,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:35:11,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:35:11,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,567 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2021-12-14 13:35:11,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:35:11,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:35:11,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:35:11,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:35:11,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:35:11,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:35:11,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:35:11,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:35:11,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (1/1) ... [2021-12-14 13:35:11,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:35:11,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:11,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 13:35:11,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 13:35:11,679 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-14 13:35:11,679 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-14 13:35:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2021-12-14 13:35:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2021-12-14 13:35:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 13:35:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:35:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-12-14 13:35:11,680 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-12-14 13:35:11,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:35:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 13:35:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 13:35:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 13:35:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 13:35:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:35:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 13:35:11,681 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-12-14 13:35:11,681 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-12-14 13:35:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-12-14 13:35:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-12-14 13:35:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:35:11,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:35:11,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:35:11,763 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:35:11,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:35:12,062 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:35:12,068 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:35:12,068 INFO L301 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-14 13:35:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:35:12 BoogieIcfgContainer [2021-12-14 13:35:12,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:35:12,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:35:12,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:35:12,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:35:12,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:35:11" (1/3) ... [2021-12-14 13:35:12,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c96ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:35:12, skipping insertion in model container [2021-12-14 13:35:12,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:11" (2/3) ... [2021-12-14 13:35:12,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19c96ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:35:12, skipping insertion in model container [2021-12-14 13:35:12,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:35:12" (3/3) ... [2021-12-14 13:35:12,082 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2021-12-14 13:35:12,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:35:12,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:35:12,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:35:12,141 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:35:12,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:35:12,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-14 13:35:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 13:35:12,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:12,175 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 13:35:12,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2021-12-14 13:35:12,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:12,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903356173] [2021-12-14 13:35:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:12,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 13:35:12,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:12,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903356173] [2021-12-14 13:35:12,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903356173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:12,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:12,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:35:12,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850463396] [2021-12-14 13:35:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:12,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 13:35:12,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 13:35:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:35:12,504 INFO L87 Difference]: Start difference. First operand has 128 states, 96 states have (on average 1.7083333333333333) internal successors, (164), 116 states have internal predecessors, (164), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 13:35:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:12,614 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2021-12-14 13:35:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 13:35:12,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2021-12-14 13:35:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:12,625 INFO L225 Difference]: With dead ends: 251 [2021-12-14 13:35:12,626 INFO L226 Difference]: Without dead ends: 120 [2021-12-14 13:35:12,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:35:12,636 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 32 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:12,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 210 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 13:35:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-14 13:35:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-14 13:35:12,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 108 states have internal predecessors, (115), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 13:35:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2021-12-14 13:35:12,690 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2021-12-14 13:35:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:12,690 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2021-12-14 13:35:12,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 13:35:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2021-12-14 13:35:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 13:35:12,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:12,693 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 13:35:12,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:35:12,694 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:12,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2021-12-14 13:35:12,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:12,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64739868] [2021-12-14 13:35:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:12,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 13:35:13,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:13,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64739868] [2021-12-14 13:35:13,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64739868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:13,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517933381] [2021-12-14 13:35:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:13,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:13,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:13,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:35:13,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 13:35:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 13:35:13,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 13:35:13,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 13:35:13,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517933381] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:35:13,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:35:13,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2021-12-14 13:35:13,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491914156] [2021-12-14 13:35:13,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:13,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 13:35:13,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 13:35:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-14 13:35:13,801 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-14 13:35:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:14,090 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2021-12-14 13:35:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 13:35:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2021-12-14 13:35:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:14,094 INFO L225 Difference]: With dead ends: 250 [2021-12-14 13:35:14,094 INFO L226 Difference]: Without dead ends: 133 [2021-12-14 13:35:14,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-14 13:35:14,097 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 55 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:14,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 970 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 13:35:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-14 13:35:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-14 13:35:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 98 states have (on average 1.2653061224489797) internal successors, (124), 116 states have internal predecessors, (124), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 13:35:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2021-12-14 13:35:14,120 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2021-12-14 13:35:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:14,120 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2021-12-14 13:35:14,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-14 13:35:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2021-12-14 13:35:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-14 13:35:14,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:14,127 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:14,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:14,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:14,344 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2021-12-14 13:35:14,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:14,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262253402] [2021-12-14 13:35:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:14,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:15,290 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 13:35:15,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:15,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262253402] [2021-12-14 13:35:15,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262253402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:15,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974300283] [2021-12-14 13:35:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:15,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:15,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:35:15,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 13:35:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:15,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-14 13:35:15,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:15,707 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-14 13:35:15,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-14 13:35:15,713 INFO L388 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 8 treesize of output 7 [2021-12-14 13:35:15,718 INFO L388 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 12 treesize of output 11 [2021-12-14 13:35:15,743 INFO L388 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 11 treesize of output 7 [2021-12-14 13:35:15,763 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 13:35:15,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2021-12-14 13:35:15,768 INFO L388 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 22 treesize of output 16 [2021-12-14 13:35:15,810 INFO L388 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 [2021-12-14 13:35:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-14 13:35:15,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:16,143 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:35:16,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 215 [2021-12-14 13:35:16,150 INFO L388 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 250 treesize of output 242 [2021-12-14 13:35:16,177 INFO L388 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 242 treesize of output 238 [2021-12-14 13:35:16,224 INFO L388 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 6 treesize of output 4 [2021-12-14 13:35:16,234 INFO L388 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 20 treesize of output 18 [2021-12-14 13:35:16,256 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:35:16,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 107 [2021-12-14 13:35:16,260 INFO L388 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 120 treesize of output 116 [2021-12-14 13:35:16,264 INFO L388 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 116 treesize of output 114 [2021-12-14 13:35:16,311 INFO L388 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 20 treesize of output 18 [2021-12-14 13:35:16,320 INFO L388 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 6 treesize of output 4 [2021-12-14 13:35:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-14 13:35:16,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974300283] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:35:16,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:35:16,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2021-12-14 13:35:16,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817560294] [2021-12-14 13:35:16,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:16,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-14 13:35:16,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-14 13:35:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2021-12-14 13:35:16,486 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2021-12-14 13:35:17,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:17,648 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2021-12-14 13:35:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-14 13:35:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) Word has length 110 [2021-12-14 13:35:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:17,653 INFO L225 Difference]: With dead ends: 330 [2021-12-14 13:35:17,653 INFO L226 Difference]: Without dead ends: 201 [2021-12-14 13:35:17,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2021-12-14 13:35:17,654 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 256 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:17,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2052 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 13:35:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-14 13:35:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2021-12-14 13:35:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 126 states have (on average 1.253968253968254) internal successors, (158), 144 states have internal predecessors, (158), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2021-12-14 13:35:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2021-12-14 13:35:17,664 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2021-12-14 13:35:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:17,664 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2021-12-14 13:35:17,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2021-12-14 13:35:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2021-12-14 13:35:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 13:35:17,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:17,666 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:17,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:17,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 13:35:17,888 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:17,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:17,888 INFO L85 PathProgramCache]: Analyzing trace with hash 614553281, now seen corresponding path program 1 times [2021-12-14 13:35:17,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:17,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061903525] [2021-12-14 13:35:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:17,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,389 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-14 13:35:18,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:18,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061903525] [2021-12-14 13:35:18,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061903525] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:18,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422258650] [2021-12-14 13:35:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:18,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:18,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:18,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:35:18,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 13:35:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-14 13:35:18,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:18,897 INFO L388 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 [2021-12-14 13:35:18,945 INFO L388 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 [2021-12-14 13:35:19,093 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base|))) is different from true [2021-12-14 13:35:19,104 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0) (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2021-12-14 13:35:19,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:35:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 5 not checked. [2021-12-14 13:35:19,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:20,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| Int) (v_ArrVal_2742 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139| v_ArrVal_2742) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)) (<= |c_#StackHeapBarrier| |v_##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base_139|))) is different from false [2021-12-14 13:35:20,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422258650] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:20,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 13:35:20,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-12-14 13:35:20,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49700092] [2021-12-14 13:35:20,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:20,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-14 13:35:20,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-14 13:35:20,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=413, Unknown=4, NotChecked=126, Total=600 [2021-12-14 13:35:20,031 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2021-12-14 13:35:20,270 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (select (select |c_#memory_$Pointer$.base| |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0)) (exists ((v_ArrVal_2702 (Array Int Int)) (|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int)) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2702) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0) (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|)))) is different from true [2021-12-14 13:35:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:20,774 INFO L93 Difference]: Finished difference Result 338 states and 426 transitions. [2021-12-14 13:35:20,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 13:35:20,775 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) Word has length 113 [2021-12-14 13:35:20,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:20,776 INFO L225 Difference]: With dead ends: 338 [2021-12-14 13:35:20,776 INFO L226 Difference]: Without dead ends: 180 [2021-12-14 13:35:20,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=1053, Unknown=9, NotChecked=276, Total=1482 [2021-12-14 13:35:20,777 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 54 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:20,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1378 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1166 Invalid, 0 Unknown, 440 Unchecked, 0.4s Time] [2021-12-14 13:35:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-14 13:35:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2021-12-14 13:35:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 129 states have (on average 1.248062015503876) internal successors, (161), 148 states have internal predecessors, (161), 30 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (19), 14 states have call predecessors, (19), 16 states have call successors, (19) [2021-12-14 13:35:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 210 transitions. [2021-12-14 13:35:20,812 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 210 transitions. Word has length 113 [2021-12-14 13:35:20,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:20,812 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 210 transitions. [2021-12-14 13:35:20,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (17), 5 states have call predecessors, (17), 8 states have call successors, (17) [2021-12-14 13:35:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 210 transitions. [2021-12-14 13:35:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 13:35:20,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:20,818 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:20,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:21,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:21,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:21,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2021-12-14 13:35:21,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:21,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456936209] [2021-12-14 13:35:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:21,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat