./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:43:07,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:43:07,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:43:07,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:43:07,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:43:07,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:43:07,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:43:07,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:43:07,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:43:07,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:43:07,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:43:07,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:43:07,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:43:07,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:43:07,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:43:07,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:43:07,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:43:07,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:43:07,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:43:07,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:43:07,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:43:07,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:43:07,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:43:07,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:43:07,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:43:07,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:43:07,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:43:07,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:43:07,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:43:07,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:43:07,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:43:07,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:43:07,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:43:07,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:43:07,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:43:07,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:43:07,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:43:07,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:43:07,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:43:07,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:43:07,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:43:07,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:43:07,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:43:07,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:43:07,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:43:07,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:43:07,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:43:07,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:43:07,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:43:07,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:43:07,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:43:07,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:43:07,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:43:07,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:43:07,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:43:07,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:43:07,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:43:07,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:43:07,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:43:07,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:43:07,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:43:07,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:43:07,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:43:07,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:43:07,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:43:07,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:43:07,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:43:07,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:43:07,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:43:07,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:43:07,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:43:07,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:43:07,849 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:43:07,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:43:07,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:43:07,849 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_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eca46c14885d62179341dcc13b398752af03e020a80dcf533f4c9afc7372707 [2022-11-18 20:43:08,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:43:08,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:43:08,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:43:08,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:43:08,181 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:43:08,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-11-18 20:43:08,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/data/58b0826dd/6cf814182edb4694850226bb4d43fbe8/FLAGee0731731 [2022-11-18 20:43:08,795 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:43:08,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i [2022-11-18 20:43:08,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/data/58b0826dd/6cf814182edb4694850226bb4d43fbe8/FLAGee0731731 [2022-11-18 20:43:09,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/data/58b0826dd/6cf814182edb4694850226bb4d43fbe8 [2022-11-18 20:43:09,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:43:09,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:43:09,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:43:09,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:43:09,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:43:09,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23db2615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09, skipping insertion in model container [2022-11-18 20:43:09,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:43:09,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:43:09,568 WARN L234 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_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2022-11-18 20:43:09,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:43:09,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:43:09,718 WARN L234 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_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/sv-benchmarks/c/heap-manipulation/dll_of_dll-2.i[22634,22647] [2022-11-18 20:43:09,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:43:09,762 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:43:09,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09 WrapperNode [2022-11-18 20:43:09,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:43:09,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:43:09,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:43:09,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:43:09,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,826 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 228 [2022-11-18 20:43:09,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:43:09,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:43:09,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:43:09,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:43:09,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:43:09,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:43:09,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:43:09,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:43:09,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (1/1) ... [2022-11-18 20:43:09,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:43:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:09,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:43:09,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:43:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-18 20:43:09,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-18 20:43:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2022-11-18 20:43:09,959 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2022-11-18 20:43:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:43:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:43:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2022-11-18 20:43:09,961 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2022-11-18 20:43:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:43:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:43:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:43:09,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-18 20:43:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:43:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:43:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:43:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2022-11-18 20:43:09,964 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2022-11-18 20:43:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2022-11-18 20:43:09,965 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2022-11-18 20:43:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:43:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:43:09,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:43:10,216 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:43:10,219 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:43:10,720 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:43:10,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:43:10,740 INFO L300 CfgBuilder]: Removed 38 assume(true) statements. [2022-11-18 20:43:10,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:43:10 BoogieIcfgContainer [2022-11-18 20:43:10,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:43:10,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:43:10,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:43:10,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:43:10,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:43:09" (1/3) ... [2022-11-18 20:43:10,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af1194a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:43:10, skipping insertion in model container [2022-11-18 20:43:10,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:43:09" (2/3) ... [2022-11-18 20:43:10,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af1194a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:43:10, skipping insertion in model container [2022-11-18 20:43:10,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:43:10" (3/3) ... [2022-11-18 20:43:10,757 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2022-11-18 20:43:10,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:43:10,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:43:10,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:43:10,895 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e7b208f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:43:10,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:43:10,903 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) [2022-11-18 20:43:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:43:10,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:10,916 INFO L195 NwaCegarLoop]: 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] [2022-11-18 20:43:10,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:10,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 760908611, now seen corresponding path program 1 times [2022-11-18 20:43:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:10,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139307344] [2022-11-18 20:43:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:10,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:43:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139307344] [2022-11-18 20:43:11,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139307344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:11,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:11,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:43:11,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829337242] [2022-11-18 20:43:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:11,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:43:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:43:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:43:11,519 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) [2022-11-18 20:43:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:11,836 INFO L93 Difference]: Finished difference Result 251 states and 429 transitions. [2022-11-18 20:43:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:43:11,852 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 [2022-11-18 20:43:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:11,863 INFO L225 Difference]: With dead ends: 251 [2022-11-18 20:43:11,863 INFO L226 Difference]: Without dead ends: 120 [2022-11-18 20:43:11,899 INFO L412 NwaCegarLoop]: 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 [2022-11-18 20:43:11,902 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 38 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:11,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 181 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:43:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-18 20:43:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-18 20:43:11,991 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) [2022-11-18 20:43:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2022-11-18 20:43:11,995 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 37 [2022-11-18 20:43:11,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:11,996 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2022-11-18 20:43:11,996 INFO L496 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) [2022-11-18 20:43:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2022-11-18 20:43:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 20:43:11,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:11,999 INFO L195 NwaCegarLoop]: 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] [2022-11-18 20:43:12,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:43:12,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:12,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1675514385, now seen corresponding path program 1 times [2022-11-18 20:43:12,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:12,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773300124] [2022-11-18 20:43:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:12,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:43:13,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773300124] [2022-11-18 20:43:13,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773300124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:43:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201437073] [2022-11-18 20:43:13,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:13,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:43:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:13,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:43:13,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:43:13,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:43:13,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201437073] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:13,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:43:13,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 12 [2022-11-18 20:43:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397001537] [2022-11-18 20:43:13,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:13,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:43:13,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:43:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:43:13,950 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) [2022-11-18 20:43:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:14,627 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2022-11-18 20:43:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:43:14,627 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 [2022-11-18 20:43:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:14,629 INFO L225 Difference]: With dead ends: 250 [2022-11-18 20:43:14,630 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 20:43:14,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:43:14,632 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:14,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1037 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:43:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 20:43:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-18 20:43:14,652 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) [2022-11-18 20:43:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2022-11-18 20:43:14,653 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 38 [2022-11-18 20:43:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:14,654 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2022-11-18 20:43:14,654 INFO L496 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) [2022-11-18 20:43:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2022-11-18 20:43:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-18 20:43:14,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:14,657 INFO L195 NwaCegarLoop]: 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] [2022-11-18 20:43:14,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:43:14,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:14,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 800158065, now seen corresponding path program 1 times [2022-11-18 20:43:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:14,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862728962] [2022-11-18 20:43:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:16,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:43:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:17,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:43:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:17,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:43:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:43:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:43:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 20:43:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862728962] [2022-11-18 20:43:18,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862728962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:43:18,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110074497] [2022-11-18 20:43:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:18,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:18,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:18,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:43:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:19,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 20:43:19,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:19,281 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-18 20:43:19,282 INFO L350 Elim1Store]: Elim1 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 74 [2022-11-18 20:43:19,293 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:19,305 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:19,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:43:19,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2022-11-18 20:43:19,357 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2022-11-18 20:43:19,442 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-18 20:43:19,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:19,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:43:19,966 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:19,974 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:19,984 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,055 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,068 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:43:20,103 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,113 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,121 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,180 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,196 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-18 20:43:20,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110074497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:20,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:43:20,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 27 [2022-11-18 20:43:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341292748] [2022-11-18 20:43:20,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:20,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:43:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:43:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:43:20,344 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-18 20:43:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:22,485 INFO L93 Difference]: Finished difference Result 330 states and 410 transitions. [2022-11-18 20:43:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:43:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) Word has length 110 [2022-11-18 20:43:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:22,493 INFO L225 Difference]: With dead ends: 330 [2022-11-18 20:43:22,493 INFO L226 Difference]: Without dead ends: 201 [2022-11-18 20:43:22,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:43:22,495 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 265 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:22,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1793 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:43:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-18 20:43:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2022-11-18 20:43:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 126 states have (on average 1.253968253968254) internal successors, (158), 144 states have internal predecessors, (158), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-18 20:43:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2022-11-18 20:43:22,527 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 110 [2022-11-18 20:43:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:22,528 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2022-11-18 20:43:22,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 11 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (17), 11 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-18 20:43:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2022-11-18 20:43:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:43:22,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:22,532 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:22,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:22,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash -692589117, now seen corresponding path program 1 times [2022-11-18 20:43:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:22,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417648312] [2022-11-18 20:43:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:43:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:43:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:43:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:43:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:43:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 75 proven. 8 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:43:26,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417648312] [2022-11-18 20:43:26,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417648312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:43:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450000144] [2022-11-18 20:43:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:26,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:26,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:26,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:43:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:26,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 20:43:26,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:26,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:43:26,953 INFO L350 Elim1Store]: Elim1 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 [2022-11-18 20:43:27,154 WARN L859 $PredicateComparison]: unable to prove that (exists ((|##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| Int) (v_ArrVal_2672 (Array Int Int))) (and (< |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| |c_#StackHeapBarrier|) (= |c_##fun~$Pointer$~TO~VOID_dll_insert_slave_~next~0#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |##fun~$Pointer$~TO~VOID_alloc_or_die_slave_~ptr~0#1.base| v_ArrVal_2672) |c_##fun~$Pointer$~TO~VOID_#in~10#1.base|) |c_##fun~$Pointer$~TO~VOID_#in~10#1.offset|)))) is different from true [2022-11-18 20:43:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:43:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 1 not checked. [2022-11-18 20:43:29,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:30,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450000144] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:43:30,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:30,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2022-11-18 20:43:30,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004532362] [2022-11-18 20:43:30,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:30,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:43:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:43:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=434, Unknown=14, NotChecked=42, Total=552 [2022-11-18 20:43:30,982 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand has 23 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-18 20:43:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:32,008 INFO L93 Difference]: Finished difference Result 337 states and 425 transitions. [2022-11-18 20:43:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:43:32,010 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) Word has length 113 [2022-11-18 20:43:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:32,012 INFO L225 Difference]: With dead ends: 337 [2022-11-18 20:43:32,012 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 20:43:32,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=129, Invalid=917, Unknown=14, NotChecked=62, Total=1122 [2022-11-18 20:43:32,014 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 60 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 252 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:32,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1006 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 689 Invalid, 0 Unknown, 252 Unchecked, 0.7s Time] [2022-11-18 20:43:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 20:43:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2022-11-18 20:43:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 129 states have (on average 1.248062015503876) internal successors, (161), 148 states have internal predecessors, (161), 30 states have call successors, (30), 10 states have call predecessors, (30), 11 states have return successors, (21), 14 states have call predecessors, (21), 16 states have call successors, (21) [2022-11-18 20:43:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 212 transitions. [2022-11-18 20:43:32,042 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 212 transitions. Word has length 113 [2022-11-18 20:43:32,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:32,043 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 212 transitions. [2022-11-18 20:43:32,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 4.052631578947368) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-18 20:43:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 212 transitions. [2022-11-18 20:43:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:43:32,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:32,052 INFO L195 NwaCegarLoop]: 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] [2022-11-18 20:43:32,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:32,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26ea668a-62a7-4938-9ccf-98a9e31b4a1b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:32,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:32,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash 522299907, now seen corresponding path program 1 times [2022-11-18 20:43:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:32,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766591965] [2022-11-18 20:43:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:32,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:43:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:43:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:43:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:43:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:43:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:43:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-18 20:43:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat