./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.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-1.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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:35:09,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:35:09,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:35:09,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:35:09,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:35:09,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:35:09,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:35:09,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:35:09,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:35:09,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:35:09,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:35:09,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:35:09,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:35:09,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:35:09,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:35:09,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:35:09,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:35:09,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:35:09,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:35:09,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:35:09,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:35:09,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:35:09,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:35:09,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:35:09,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:35:09,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:35:09,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:35:09,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:35:09,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:35:09,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:35:09,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:35:09,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:35:09,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:35:09,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:35:09,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:35:09,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:35:09,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:35:09,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:35:09,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:35:09,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:35:09,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:35:09,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:35:09,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:35:09,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:35:09,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:35:09,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:35:09,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:35:09,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:35:09,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:35:09,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:35:09,292 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:35:09,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:35:09,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:35:09,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:35:09,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:35:09,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:35:09,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:35:09,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:35:09,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:35:09,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:35:09,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:35:09,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:35:09,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:35:09,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:35:09,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:35:09,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:35:09,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:35:09,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:35:09,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:35:09,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:35:09,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:35:09,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:35:09,302 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:35:09,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:35:09,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:35:09,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:35:09,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2021-12-14 13:35:09,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:35:09,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:35:09,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:35:09,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:35:09,495 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:35:09,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2021-12-14 13:35:09,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/551d257c5/04ce3fad0ca84a1fbcca5aa1a20246c1/FLAG82497659b [2021-12-14 13:35:09,912 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:35:09,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2021-12-14 13:35:09,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/551d257c5/04ce3fad0ca84a1fbcca5aa1a20246c1/FLAG82497659b [2021-12-14 13:35:10,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/551d257c5/04ce3fad0ca84a1fbcca5aa1a20246c1 [2021-12-14 13:35:10,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:35:10,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:35:10,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:35:10,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:35:10,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:35:10,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e4d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10, skipping insertion in model container [2021-12-14 13:35:10,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:35:10,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:35:10,532 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-1.i[22634,22647] [2021-12-14 13:35:10,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:35:10,579 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:35:10,615 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-1.i[22634,22647] [2021-12-14 13:35:10,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:35:10,662 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:35:10,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10 WrapperNode [2021-12-14 13:35:10,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:35:10,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:35:10,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:35:10,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:35:10,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,718 INFO L137 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2021-12-14 13:35:10,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:35:10,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:35:10,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:35:10,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:35:10,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:35:10,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:35:10,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:35:10,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:35:10,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (1/1) ... [2021-12-14 13:35:10,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:35:10,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:10,797 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 13:35:10,803 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 13:35:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-12-14 13:35:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-12-14 13:35:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2021-12-14 13:35:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2021-12-14 13:35:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 13:35:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:35:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-12-14 13:35:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-12-14 13:35:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:35:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 13:35:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 13:35:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 13:35:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 13:35:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:35:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 13:35:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-12-14 13:35:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-12-14 13:35:10,827 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-12-14 13:35:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-12-14 13:35:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:35:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:35:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:35:10,941 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:35:10,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:35:11,183 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:35:11,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:35:11,188 INFO L301 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-14 13:35:11,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:35:11 BoogieIcfgContainer [2021-12-14 13:35:11,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:35:11,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:35:11,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:35:11,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:35:11,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:35:10" (1/3) ... [2021-12-14 13:35:11,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4540d024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:35:11, skipping insertion in model container [2021-12-14 13:35:11,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:35:10" (2/3) ... [2021-12-14 13:35:11,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4540d024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:35:11, skipping insertion in model container [2021-12-14 13:35:11,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:35:11" (3/3) ... [2021-12-14 13:35:11,198 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2021-12-14 13:35:11,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:35:11,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:35:11,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:35:11,242 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 13:35:11,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:35:11,260 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 13:35:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 13:35:11,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:11,265 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 13:35:11,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2021-12-14 13:35:11,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:11,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413134950] [2021-12-14 13:35:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:11,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:11,506 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 13:35:11,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:11,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413134950] [2021-12-14 13:35:11,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413134950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:11,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:11,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 13:35:11,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403080909] [2021-12-14 13:35:11,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:11,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 13:35:11,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 13:35:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 13:35:11,539 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 13:35:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:11,733 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2021-12-14 13:35:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 13:35:11,735 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 13:35:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:11,748 INFO L225 Difference]: With dead ends: 251 [2021-12-14 13:35:11,748 INFO L226 Difference]: Without dead ends: 120 [2021-12-14 13:35:11,752 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 13:35:11,755 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 13:35:11,756 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 13:35:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-14 13:35:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-12-14 13:35:11,787 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 13:35:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2021-12-14 13:35:11,789 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2021-12-14 13:35:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:11,789 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2021-12-14 13:35:11,790 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 13:35:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2021-12-14 13:35:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 13:35:11,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:11,792 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 13:35:11,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:35:11,792 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2021-12-14 13:35:11,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:11,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750534692] [2021-12-14 13:35:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:11,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,125 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 13:35:12,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:12,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750534692] [2021-12-14 13:35:12,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750534692] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:12,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049062185] [2021-12-14 13:35:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:12,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:12,128 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 13:35:12,150 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 13:35:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:12,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 13:35:12,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:12,536 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 13:35:12,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:12,791 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 13:35:12,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049062185] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:35:12,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:35:12,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2021-12-14 13:35:12,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604651421] [2021-12-14 13:35:12,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:12,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 13:35:12,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 13:35:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-14 13:35:12,794 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 13:35:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:13,055 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2021-12-14 13:35:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 13:35:13,056 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 13:35:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:13,058 INFO L225 Difference]: With dead ends: 250 [2021-12-14 13:35:13,058 INFO L226 Difference]: Without dead ends: 133 [2021-12-14 13:35:13,059 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 13:35:13,060 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 13:35:13,060 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 13:35:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-14 13:35:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-14 13:35:13,070 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 13:35:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2021-12-14 13:35:13,071 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2021-12-14 13:35:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:13,071 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2021-12-14 13:35:13,071 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 13:35:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2021-12-14 13:35:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-14 13:35:13,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:13,074 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 13:35:13,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 13:35:13,287 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 13:35:13,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:13,289 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2021-12-14 13:35:13,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:13,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357423871] [2021-12-14 13:35:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:13,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 75 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 13:35:14,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357423871] [2021-12-14 13:35:14,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357423871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:14,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295082692] [2021-12-14 13:35:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:14,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:14,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:14,176 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 13:35:14,177 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 13:35:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:14,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-14 13:35:14,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:14,696 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-14 13:35:14,697 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 13:35:14,703 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 13:35:14,721 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 13:35:14,745 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 13:35:14,765 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 13:35:14,765 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 13:35:14,769 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 13:35:14,837 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 13:35:14,873 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 13:35:14,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:15,153 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:35:15,154 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 13:35:15,159 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 13:35:15,166 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 13:35:15,224 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 20 treesize of output 18 [2021-12-14 13:35:15,232 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 13:35:15,253 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 13:35:15,253 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 13:35:15,259 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 13:35:15,264 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 242 treesize of output 238 [2021-12-14 13:35:15,323 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 13:35:15,334 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 13:35:15,499 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 13:35:15,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295082692] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 13:35:15,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 13:35:15,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 15] total 29 [2021-12-14 13:35:15,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596574654] [2021-12-14 13:35:15,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:15,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-14 13:35:15,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-14 13:35:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2021-12-14 13:35:15,507 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 29 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-14 13:35:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:16,785 INFO L93 Difference]: Finished difference Result 331 states and 417 transitions. [2021-12-14 13:35:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-14 13:35:16,787 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) Word has length 110 [2021-12-14 13:35:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:16,788 INFO L225 Difference]: With dead ends: 331 [2021-12-14 13:35:16,789 INFO L226 Difference]: Without dead ends: 203 [2021-12-14 13:35:16,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2021-12-14 13:35:16,790 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 277 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:16,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2132 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 13:35:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-14 13:35:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 161. [2021-12-14 13:35:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 142 states have internal predecessors, (156), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-14 13:35:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2021-12-14 13:35:16,801 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 110 [2021-12-14 13:35:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:16,801 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2021-12-14 13:35:16,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 9 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2021-12-14 13:35:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2021-12-14 13:35:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 13:35:16,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:16,804 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:16,822 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 13:35:17,015 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 13:35:17,016 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:17,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1398318913, now seen corresponding path program 1 times [2021-12-14 13:35:17,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:17,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077950452] [2021-12-14 13:35:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:17,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 13:35:17,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077950452] [2021-12-14 13:35:17,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077950452] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510319416] [2021-12-14 13:35:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:17,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:17,958 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 13:35:17,959 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 13:35:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:18,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-14 13:35:18,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:18,408 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-14 13:35:18,409 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 13:35:18,413 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 13:35:18,418 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 13:35:18,433 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 13:35:18,448 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 13:35:18,448 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 13:35:18,450 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 13:35:18,503 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 13:35:18,646 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2896 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_2896) |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|) |c_dll_insert_master_~next~3#1.base|) (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|))) is different from true [2021-12-14 13:35:18,669 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2896 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_2896) |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|) 0))) is different from true [2021-12-14 13:35:18,675 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 22 treesize of output 18 [2021-12-14 13:35:18,677 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 18 treesize of output 16 [2021-12-14 13:35:18,766 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2896 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_2896) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0) (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|))) is different from true [2021-12-14 13:35:18,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:35:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 18 refuted. 0 times theorem prover too weak. 78 trivial. 7 not checked. [2021-12-14 13:35:18,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:19,059 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_dll_insert_master_alloc_or_die_master_~ptr~1#1.base_43| Int) (v_ArrVal_2925 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_alloc_or_die_master_~ptr~1#1.base_43| v_ArrVal_2925) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)) (<= |c_#StackHeapBarrier| |v_dll_insert_master_alloc_or_die_master_~ptr~1#1.base_43|))) is different from false [2021-12-14 13:35:19,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510319416] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:19,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 13:35:19,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17] total 34 [2021-12-14 13:35:19,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235845571] [2021-12-14 13:35:19,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:19,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-14 13:35:19,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-14 13:35:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=865, Unknown=5, NotChecked=244, Total=1190 [2021-12-14 13:35:19,062 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand has 34 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 28 states have internal predecessors, (77), 13 states have call successors, (23), 5 states have call predecessors, (23), 9 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2021-12-14 13:35:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:20,231 INFO L93 Difference]: Finished difference Result 336 states and 413 transitions. [2021-12-14 13:35:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 13:35:20,232 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 28 states have internal predecessors, (77), 13 states have call successors, (23), 5 states have call predecessors, (23), 9 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) Word has length 113 [2021-12-14 13:35:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:20,234 INFO L225 Difference]: With dead ends: 336 [2021-12-14 13:35:20,234 INFO L226 Difference]: Without dead ends: 177 [2021-12-14 13:35:20,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=2003, Unknown=6, NotChecked=372, Total=2550 [2021-12-14 13:35:20,235 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 84 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 600 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:20,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 2139 Invalid, 2380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1718 Invalid, 0 Unknown, 600 Unchecked, 0.7s Time] [2021-12-14 13:35:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-14 13:35:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2021-12-14 13:35:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 149 states have internal predecessors, (162), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (21), 15 states have call predecessors, (21), 16 states have call successors, (21) [2021-12-14 13:35:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 213 transitions. [2021-12-14 13:35:20,246 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 213 transitions. Word has length 113 [2021-12-14 13:35:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:20,246 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 213 transitions. [2021-12-14 13:35:20,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 28 states have internal predecessors, (77), 13 states have call successors, (23), 5 states have call predecessors, (23), 9 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2021-12-14 13:35:20,246 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 213 transitions. [2021-12-14 13:35:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 13:35:20,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:20,248 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 13:35:20,267 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 13:35:20,467 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 13:35:20,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:20,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:20,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1589505985, now seen corresponding path program 1 times [2021-12-14 13:35:20,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:20,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750841699] [2021-12-14 13:35:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:20,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:20,958 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 13:35:20,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:35:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750841699] [2021-12-14 13:35:20,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750841699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:20,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335998136] [2021-12-14 13:35:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:20,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:35:20,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 13:35:20,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 13:35:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-14 13:35:21,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:21,482 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-12-14 13:35:21,482 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 13:35:21,486 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 13:35:21,491 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 13:35:21,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-14 13:35:21,530 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 13:35:21,530 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 13:35:21,532 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 13:35:21,594 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 13:35:21,715 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4255 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_4255) |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|) |c_dll_insert_master_~next~3#1.base|))) is different from true [2021-12-14 13:35:21,725 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4255 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_4255) |c_dll_insert_master_#in~dll#1.base|) |c_dll_insert_master_#in~dll#1.offset|) 0))) is different from true [2021-12-14 13:35:21,757 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 22 treesize of output 18 [2021-12-14 13:35:21,760 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 18 treesize of output 16 [2021-12-14 13:35:21,828 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4255 (Array Int Int)) (|dll_insert_master_~item~1#1.base| Int)) (and (= (select (select (store |c_old(#memory_$Pointer$.base)| |dll_insert_master_~item~1#1.base| v_ArrVal_4255) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|) 0) (< |dll_insert_master_~item~1#1.base| |c_#StackHeapBarrier|))) is different from true [2021-12-14 13:35:21,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 13:35:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 18 refuted. 0 times theorem prover too weak. 78 trivial. 7 not checked. [2021-12-14 13:35:21,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 13:35:22,140 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4284 (Array Int Int)) (|v_dll_insert_master_~item~1#1.base_58| Int)) (or (<= |c_#StackHeapBarrier| |v_dll_insert_master_~item~1#1.base_58|) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_dll_insert_master_~item~1#1.base_58| v_ArrVal_4284) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)))) is different from false [2021-12-14 13:35:22,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335998136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 13:35:22,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 13:35:22,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-12-14 13:35:22,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207597141] [2021-12-14 13:35:22,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 13:35:22,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-14 13:35:22,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:35:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-14 13:35:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=455, Unknown=6, NotChecked=180, Total=702 [2021-12-14 13:35:22,142 INFO L87 Difference]: Start difference. First operand 173 states and 213 transitions. Second operand has 26 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 12 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-14 13:35:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:22,824 INFO L93 Difference]: Finished difference Result 334 states and 409 transitions. [2021-12-14 13:35:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 13:35:22,825 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 12 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) Word has length 113 [2021-12-14 13:35:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:22,826 INFO L225 Difference]: With dead ends: 334 [2021-12-14 13:35:22,826 INFO L226 Difference]: Without dead ends: 172 [2021-12-14 13:35:22,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=830, Unknown=9, NotChecked=244, Total=1190 [2021-12-14 13:35:22,827 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 49 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 655 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:22,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1446 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1066 Invalid, 0 Unknown, 655 Unchecked, 0.5s Time] [2021-12-14 13:35:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-14 13:35:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-12-14 13:35:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 149 states have internal predecessors, (162), 29 states have call successors, (29), 10 states have call predecessors, (29), 12 states have return successors, (18), 14 states have call predecessors, (18), 15 states have call successors, (18) [2021-12-14 13:35:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2021-12-14 13:35:22,836 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 113 [2021-12-14 13:35:22,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:22,836 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2021-12-14 13:35:22,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 12 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (17), 9 states have call predecessors, (17), 12 states have call successors, (17) [2021-12-14 13:35:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2021-12-14 13:35:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 13:35:22,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:22,838 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 13:35:22,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:23,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 13:35:23,057 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:23,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 2 times [2021-12-14 13:35:23,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:35:23,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859260961] [2021-12-14 13:35:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:23,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:35:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 13:35:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 13:35:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 13:35:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:23,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 13:35:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-14 13:35:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 13:35:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat