./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 f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX --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 0.2.1-dev-f8e1c90 [2021-11-09 09:20:51,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:20:51,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:20:51,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:20:51,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:20:51,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:20:51,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:20:51,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:20:51,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:20:51,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:20:51,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:20:51,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:20:51,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:20:51,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:20:51,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:20:51,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:20:51,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:20:51,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:20:51,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:20:51,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:20:51,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:20:51,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:20:51,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:20:51,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:20:51,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:20:51,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:20:51,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:20:51,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:20:51,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:20:51,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:20:51,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:20:51,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:20:51,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:20:51,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:20:51,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:20:51,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:20:51,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:20:51,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:20:51,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:20:51,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:20:51,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:20:51,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:20:51,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:20:51,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:20:51,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:20:51,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:20:51,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:20:51,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:20:51,736 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:20:51,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:20:51,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:20:51,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:20:51,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:20:51,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:20:51,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:20:51,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:20:51,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:20:51,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:20:51,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:20:51,740 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:20:51,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:20:51,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:20:51,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:20:51,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:20:51,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:20:51,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:20:51,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:20:51,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:20:51,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:20:51,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:20:51,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:20:51,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:20:51,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:20:51,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:20:51,747 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2021-11-09 09:20:52,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:20:52,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:20:52,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:20:52,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:20:52,151 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:20:52,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2021-11-09 09:20:52,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/data/c106a1cd7/1756bd0601a3404797e3db1ff37da75b/FLAGb1e25c27e [2021-11-09 09:20:52,895 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:20:52,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2021-11-09 09:20:52,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/data/c106a1cd7/1756bd0601a3404797e3db1ff37da75b/FLAGb1e25c27e [2021-11-09 09:20:53,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/data/c106a1cd7/1756bd0601a3404797e3db1ff37da75b [2021-11-09 09:20:53,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:20:53,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:20:53,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:20:53,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:20:53,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:20:53,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:53,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684be36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53, skipping insertion in model container [2021-11-09 09:20:53,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:53,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:20:53,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:20:53,701 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2021-11-09 09:20:53,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:20:53,760 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:20:53,799 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2021-11-09 09:20:53,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:20:53,877 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:20:53,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53 WrapperNode [2021-11-09 09:20:53,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:20:53,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:20:53,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:20:53,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:20:53,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:53,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:20:54,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:20:54,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:20:54,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:20:54,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:20:54,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:20:54,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:20:54,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:20:54,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (1/1) ... [2021-11-09 09:20:54,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:20:54,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:54,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:20:54,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:20:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:20:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2021-11-09 09:20:54,254 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2021-11-09 09:20:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:20:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:20:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 09:20:54,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 09:20:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:20:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:20:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:20:54,256 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2021-11-09 09:20:54,257 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2021-11-09 09:20:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2021-11-09 09:20:54,258 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2021-11-09 09:20:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:20:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:20:54,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:20:55,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:20:55,311 INFO L299 CfgBuilder]: Removed 148 assume(true) statements. [2021-11-09 09:20:55,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:20:55 BoogieIcfgContainer [2021-11-09 09:20:55,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:20:55,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:20:55,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:20:55,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:20:55,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:20:53" (1/3) ... [2021-11-09 09:20:55,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d09de22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:20:55, skipping insertion in model container [2021-11-09 09:20:55,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:20:53" (2/3) ... [2021-11-09 09:20:55,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d09de22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:20:55, skipping insertion in model container [2021-11-09 09:20:55,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:20:55" (3/3) ... [2021-11-09 09:20:55,333 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2021-11-09 09:20:55,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:20:55,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2021-11-09 09:20:55,408 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:20:55,416 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 [2021-11-09 09:20:55,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2021-11-09 09:20:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 157 states have (on average 1.8471337579617835) internal successors, (290), 185 states have internal predecessors, (290), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 09:20:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 09:20:55,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:55,455 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:55,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-09 09:20:55,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash 235077082, now seen corresponding path program 1 times [2021-11-09 09:20:55,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:55,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672308949] [2021-11-09 09:20:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:55,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:20:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:20:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-09 09:20:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:20:55,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:55,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672308949] [2021-11-09 09:20:55,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672308949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:55,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:20:55,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:20:55,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609899726] [2021-11-09 09:20:55,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:20:55,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:55,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:20:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:20:55,869 INFO L87 Difference]: Start difference. First operand has 195 states, 157 states have (on average 1.8471337579617835) internal successors, (290), 185 states have internal predecessors, (290), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:20:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:56,173 INFO L93 Difference]: Finished difference Result 387 states and 611 transitions. [2021-11-09 09:20:56,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:20:56,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-09 09:20:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:56,194 INFO L225 Difference]: With dead ends: 387 [2021-11-09 09:20:56,194 INFO L226 Difference]: Without dead ends: 189 [2021-11-09 09:20:56,204 INFO L786 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 [2021-11-09 09:20:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-09 09:20:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-11-09 09:20:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 152 states have (on average 1.256578947368421) internal successors, (191), 179 states have internal predecessors, (191), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-09 09:20:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 205 transitions. [2021-11-09 09:20:56,301 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 205 transitions. Word has length 32 [2021-11-09 09:20:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:56,302 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 205 transitions. [2021-11-09 09:20:56,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:20:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 205 transitions. [2021-11-09 09:20:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-09 09:20:56,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:56,307 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:20:56,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:20:56,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-09 09:20:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1381037844, now seen corresponding path program 1 times [2021-11-09 09:20:56,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:56,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195308335] [2021-11-09 09:20:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:56,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:20:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:20:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-09 09:20:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:20:56,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:56,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195308335] [2021-11-09 09:20:56,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195308335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:56,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313240186] [2021-11-09 09:20:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:56,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:56,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:56,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:56,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:20:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:57,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:20:57,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:20:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:20:57,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313240186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:20:57,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:20:57,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2021-11-09 09:20:57,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101262843] [2021-11-09 09:20:57,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:20:57,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:20:57,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:20:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:20:57,574 INFO L87 Difference]: Start difference. First operand 189 states and 205 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:20:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:20:57,713 INFO L93 Difference]: Finished difference Result 388 states and 436 transitions. [2021-11-09 09:20:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:20:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2021-11-09 09:20:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:20:57,727 INFO L225 Difference]: With dead ends: 388 [2021-11-09 09:20:57,727 INFO L226 Difference]: Without dead ends: 202 [2021-11-09 09:20:57,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:20:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-09 09:20:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-11-09 09:20:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 160 states have (on average 1.25) internal successors, (200), 187 states have internal predecessors, (200), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 09:20:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2021-11-09 09:20:57,762 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 33 [2021-11-09 09:20:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:20:57,763 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2021-11-09 09:20:57,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-09 09:20:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2021-11-09 09:20:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:20:57,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:20:57,772 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:20:57,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:20:57,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-09 09:20:57,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-09 09:20:57,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:20:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1343163818, now seen corresponding path program 1 times [2021-11-09 09:20:57,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:20:57,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377769483] [2021-11-09 09:20:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:57,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:20:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:20:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:20:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:20:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-09 09:20:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:20:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-09 09:20:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-09 09:20:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:20:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-09 09:20:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:20:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:20:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-09 09:20:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 58 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-09 09:20:59,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:20:59,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377769483] [2021-11-09 09:20:59,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377769483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:20:59,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617904514] [2021-11-09 09:20:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:20:59,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:20:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:20:59,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:20:59,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:20:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:20:59,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-09 09:20:59,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:21:00,624 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-09 09:21:00,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-11-09 09:21:00,811 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 [2021-11-09 09:21:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-09 09:21:00,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617904514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:21:00,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:21:00,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 27 [2021-11-09 09:21:00,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969477134] [2021-11-09 09:21:00,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-09 09:21:00,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:21:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-09 09:21:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2021-11-09 09:21:00,883 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand has 27 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 9 states have call successors, (20), 2 states have call predecessors, (20), 7 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-11-09 09:21:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:21:03,938 INFO L93 Difference]: Finished difference Result 418 states and 469 transitions. [2021-11-09 09:21:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:21:03,939 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 9 states have call successors, (20), 2 states have call predecessors, (20), 7 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 103 [2021-11-09 09:21:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:21:03,942 INFO L225 Difference]: With dead ends: 418 [2021-11-09 09:21:03,942 INFO L226 Difference]: Without dead ends: 217 [2021-11-09 09:21:03,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=206, Invalid=2146, Unknown=0, NotChecked=0, Total=2352 [2021-11-09 09:21:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-09 09:21:03,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-09 09:21:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.2339181286549707) internal successors, (211), 198 states have internal predecessors, (211), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (14), 10 states have call predecessors, (14), 12 states have call successors, (14) [2021-11-09 09:21:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 237 transitions. [2021-11-09 09:21:03,985 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 237 transitions. Word has length 103 [2021-11-09 09:21:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:21:03,986 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 237 transitions. [2021-11-09 09:21:03,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 9 states have call successors, (20), 2 states have call predecessors, (20), 7 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-11-09 09:21:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 237 transitions. [2021-11-09 09:21:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:21:03,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:21:03,996 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 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] [2021-11-09 09:21:04,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:21:04,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c407e19-7086-445a-a3e5-b65ed51d5c43/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:21:04,222 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 23 more)] === [2021-11-09 09:21:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:21:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash 974363944, now seen corresponding path program 1 times [2021-11-09 09:21:04,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:21:04,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443162267] [2021-11-09 09:21:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:21:04,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:21:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:21:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:21:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:21:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:21:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:21:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:21:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:21:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-09 09:21:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:21:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:21:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:22:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-09 09:22:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:22:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-09 09:22:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:22:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-09 09:22:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:22:03,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:22:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:22:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-09 09:22:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:22:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-09 09:22:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat