./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8 --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 4c2b7377d2b430a15e16457512411598a883b6588c528bba211e64f887de4d8e --- 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-2329fc7 [2022-12-13 15:38:47,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:38:47,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:38:47,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:38:47,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:38:47,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:38:47,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:38:47,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:38:47,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:38:47,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:38:47,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:38:47,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:38:47,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:38:47,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:38:47,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:38:47,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:38:47,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:38:47,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:38:47,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:38:47,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:38:47,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:38:47,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:38:47,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:38:47,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:38:47,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:38:47,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:38:47,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:38:47,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:38:47,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:38:47,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:38:47,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:38:47,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:38:47,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:38:47,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:38:47,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:38:47,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:38:47,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:38:47,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:38:47,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:38:47,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:38:47,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:38:47,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:38:47,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:38:47,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:38:47,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:38:47,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:38:47,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:38:47,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:38:47,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:38:47,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:38:47,770 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:38:47,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:38:47,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:38:47,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:38:47,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:38:47,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:38:47,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:38:47,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:38:47,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:38:47,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:38:47,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:38:47,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:38:47,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:38:47,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:38:47,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:38:47,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:38:47,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:38:47,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:38:47,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:38:47,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:38:47,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:38:47,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:38:47,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:38:47,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:38:47,774 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:38:47,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:38:47,775 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:38:47,775 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c2b7377d2b430a15e16457512411598a883b6588c528bba211e64f887de4d8e [2022-12-13 15:38:47,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:38:47,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:38:47,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:38:47,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:38:47,967 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:38:47,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-regression/test23-1.c [2022-12-13 15:38:50,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:38:50,772 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:38:50,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/sv-benchmarks/c/ldv-regression/test23-1.c [2022-12-13 15:38:50,778 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/data/56c60719e/9ebea7ef0d9f446f83a78d4923cd72a2/FLAG6e2ed6470 [2022-12-13 15:38:50,788 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/data/56c60719e/9ebea7ef0d9f446f83a78d4923cd72a2 [2022-12-13 15:38:50,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:38:50,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:38:50,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:38:50,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:38:50,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:38:50,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:50,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4922818d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50, skipping insertion in model container [2022-12-13 15:38:50,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:50,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:38:50,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:38:50,943 WARN L237 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_46e17858-2314-4b43-95f5-f91b33de6e2e/sv-benchmarks/c/ldv-regression/test23-1.c[1075,1088] [2022-12-13 15:38:50,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:38:50,955 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:38:50,967 WARN L237 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_46e17858-2314-4b43-95f5-f91b33de6e2e/sv-benchmarks/c/ldv-regression/test23-1.c[1075,1088] [2022-12-13 15:38:50,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:38:50,979 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:38:50,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50 WrapperNode [2022-12-13 15:38:50,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:38:50,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:38:50,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:38:50,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:38:50,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:50,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,004 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-12-13 15:38:51,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:38:51,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:38:51,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:38:51,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:38:51,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:38:51,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:38:51,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:38:51,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:38:51,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (1/1) ... [2022-12-13 15:38:51,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:38:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:51,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:38:51,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:38:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:38:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:38:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:38:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-12-13 15:38:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-12-13 15:38:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:38:51,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:38:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:38:51,141 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:38:51,143 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:38:51,251 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:38:51,255 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:38:51,255 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:38:51,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:38:51 BoogieIcfgContainer [2022-12-13 15:38:51,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:38:51,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:38:51,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:38:51,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:38:51,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:38:50" (1/3) ... [2022-12-13 15:38:51,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7fde77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:38:51, skipping insertion in model container [2022-12-13 15:38:51,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:50" (2/3) ... [2022-12-13 15:38:51,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7fde77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:38:51, skipping insertion in model container [2022-12-13 15:38:51,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:38:51" (3/3) ... [2022-12-13 15:38:51,263 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-1.c [2022-12-13 15:38:51,277 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:38:51,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:38:51,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:38:51,316 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;@64e6f5d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:38:51,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:38:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:38:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 15:38:51,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:51,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:51,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:51,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1478003781, now seen corresponding path program 1 times [2022-12-13 15:38:51,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:51,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294017833] [2022-12-13 15:38:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:51,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:38:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 15:38:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:51,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294017833] [2022-12-13 15:38:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294017833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:51,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:51,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:38:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163076344] [2022-12-13 15:38:51,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:38:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:51,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:38:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:38:51,525 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:38:51,538 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-12-13 15:38:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:38:51,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-13 15:38:51,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:38:51,544 INFO L225 Difference]: With dead ends: 31 [2022-12-13 15:38:51,545 INFO L226 Difference]: Without dead ends: 18 [2022-12-13 15:38:51,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:38:51,549 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:38:51,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:38:51,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-13 15:38:51,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-13 15:38:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:38:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-12-13 15:38:51,574 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 19 [2022-12-13 15:38:51,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:38:51,575 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-12-13 15:38:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-12-13 15:38:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 15:38:51,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:51,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:38:51,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1220515189, now seen corresponding path program 1 times [2022-12-13 15:38:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:51,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491364279] [2022-12-13 15:38:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:38:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 15:38:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:51,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491364279] [2022-12-13 15:38:51,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491364279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:51,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:51,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:38:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100369059] [2022-12-13 15:38:51,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:38:51,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:38:51,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:38:51,978 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:38:52,014 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-12-13 15:38:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:38:52,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-12-13 15:38:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:38:52,016 INFO L225 Difference]: With dead ends: 25 [2022-12-13 15:38:52,016 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 15:38:52,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:38:52,018 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:38:52,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:38:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 15:38:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 15:38:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:38:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-12-13 15:38:52,022 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 20 [2022-12-13 15:38:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:38:52,022 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-12-13 15:38:52,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:52,022 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-12-13 15:38:52,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 15:38:52,023 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:52,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:52,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:38:52,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1898823162, now seen corresponding path program 1 times [2022-12-13 15:38:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:52,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454240022] [2022-12-13 15:38:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:38:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 15:38:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454240022] [2022-12-13 15:38:52,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454240022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867640907] [2022-12-13 15:38:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:52,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:52,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:52,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:38:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:52,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 15:38:52,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:52,379 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 17 [2022-12-13 15:38:52,513 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 17 treesize of output 9 [2022-12-13 15:38:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:52,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:52,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867640907] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:52,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:52,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-12-13 15:38:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273513439] [2022-12-13 15:38:52,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:52,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:38:52,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:38:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:38:52,576 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:38:52,664 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-12-13 15:38:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:38:52,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-12-13 15:38:52,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:38:52,665 INFO L225 Difference]: With dead ends: 31 [2022-12-13 15:38:52,665 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 15:38:52,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:38:52,667 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:38:52,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 74 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:38:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 15:38:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-13 15:38:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:38:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-12-13 15:38:52,672 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2022-12-13 15:38:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:38:52,672 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-12-13 15:38:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-12-13 15:38:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 15:38:52,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:52,673 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:52,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:38:52,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:52,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -974313463, now seen corresponding path program 2 times [2022-12-13 15:38:52,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:52,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611246588] [2022-12-13 15:38:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:53,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:38:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 15:38:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:53,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:53,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611246588] [2022-12-13 15:38:53,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611246588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:53,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98987702] [2022-12-13 15:38:53,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:38:53,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:53,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:53,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:53,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:38:53,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:38:53,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 15:38:53,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:53,231 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 29 treesize of output 24 [2022-12-13 15:38:53,430 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 47 treesize of output 14 [2022-12-13 15:38:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:53,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:53,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98987702] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:53,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:53,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2022-12-13 15:38:53,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684361284] [2022-12-13 15:38:53,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:53,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:38:53,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:53,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:38:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:38:53,531 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:38:53,803 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-12-13 15:38:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 15:38:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-12-13 15:38:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:38:53,804 INFO L225 Difference]: With dead ends: 43 [2022-12-13 15:38:53,804 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 15:38:53,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=613, Unknown=0, NotChecked=0, Total=930 [2022-12-13 15:38:53,806 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:38:53,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 117 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:38:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 15:38:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-13 15:38:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:38:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-12-13 15:38:53,814 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 28 [2022-12-13 15:38:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:38:53,815 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-12-13 15:38:53,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-12-13 15:38:53,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 15:38:53,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:53,815 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:53,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:38:54,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:54,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 638604903, now seen corresponding path program 3 times [2022-12-13 15:38:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:54,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606313543] [2022-12-13 15:38:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:54,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:54,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 15:38:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 15:38:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:54,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606313543] [2022-12-13 15:38:54,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606313543] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:54,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549717827] [2022-12-13 15:38:54,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:38:54,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:54,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:54,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:38:54,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 15:38:54,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:54,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 15:38:54,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:54,698 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 29 treesize of output 24 [2022-12-13 15:38:55,294 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 43 treesize of output 13 [2022-12-13 15:38:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:55,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:38:55,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549717827] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:55,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:55,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 37 [2022-12-13 15:38:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343743802] [2022-12-13 15:38:55,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:55,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 15:38:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 15:38:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 15:38:55,639 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:38:56,426 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2022-12-13 15:38:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 15:38:56,426 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2022-12-13 15:38:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:38:56,427 INFO L225 Difference]: With dead ends: 45 [2022-12-13 15:38:56,427 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 15:38:56,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=678, Invalid=2744, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 15:38:56,429 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:38:56,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:38:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 15:38:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-12-13 15:38:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:38:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-12-13 15:38:56,439 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 40 [2022-12-13 15:38:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:38:56,439 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-12-13 15:38:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:38:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-12-13 15:38:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 15:38:56,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:38:56,440 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:56,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:38:56,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:56,642 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:38:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1028786796, now seen corresponding path program 4 times [2022-12-13 15:38:56,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:56,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435099253] [2022-12-13 15:38:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:56,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:38:56,692 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:38:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:38:56,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:38:56,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:38:56,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 15:38:56,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:38:56,725 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-12-13 15:38:56,727 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:38:56,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:38:56 BoogieIcfgContainer [2022-12-13 15:38:56,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:38:56,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:38:56,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:38:56,754 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:38:56,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:38:51" (3/4) ... [2022-12-13 15:38:56,755 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 15:38:56,787 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:38:56,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:38:56,788 INFO L158 Benchmark]: Toolchain (without parser) took 5996.83ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 117.5MB in the beginning and 114.9MB in the end (delta: 2.6MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,788 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:38:56,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.55ms. Allocated memory is still 146.8MB. Free memory was 117.1MB in the beginning and 106.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.44ms. Allocated memory is still 146.8MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,789 INFO L158 Benchmark]: Boogie Preprocessor took 17.59ms. Allocated memory is still 146.8MB. Free memory was 104.5MB in the beginning and 103.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,789 INFO L158 Benchmark]: RCFGBuilder took 234.01ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 91.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,789 INFO L158 Benchmark]: TraceAbstraction took 5494.75ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 90.9MB in the beginning and 119.1MB in the end (delta: -28.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,789 INFO L158 Benchmark]: Witness Printer took 33.94ms. Allocated memory is still 188.7MB. Free memory was 118.0MB in the beginning and 114.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:38:56,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.55ms. Allocated memory is still 146.8MB. Free memory was 117.1MB in the beginning and 106.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.44ms. Allocated memory is still 146.8MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.59ms. Allocated memory is still 146.8MB. Free memory was 104.5MB in the beginning and 103.5MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 234.01ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 91.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5494.75ms. Allocated memory was 146.8MB in the beginning and 188.7MB in the end (delta: 41.9MB). Free memory was 90.9MB in the beginning and 119.1MB in the end (delta: -28.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Witness Printer took 33.94ms. Allocated memory is still 188.7MB. Free memory was 118.0MB in the beginning and 114.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 52]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] struct dummy d1, d2; VAL [d1={4:0}, d2={5:0}] [L35] CALL init() [L16] d1.a = __VERIFIER_nondet_int() [L17] d1.b = __VERIFIER_nondet_int() [L19] d2.a = __VERIFIER_nondet_int() [L20] d2.b = __VERIFIER_nondet_int() [L35] RET init() [L36] CALL, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}] [L25] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L36] RET, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}, get_dummy()={4:0}] [L36] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] CALL, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}] [L25] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L36] RET, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}, get_dummy()={4:0}, pd1={4:0}] [L36] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L37] int i = __VERIFIER_nondet_int(); [L38] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 [L39] pd2->array[i] = i [L40] int *pa = &pd1->array[i]; [L41] EXPR pd2->array[i] [L41] i = pd2->array[i] - 10 [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=-4, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-3, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=-3, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-2, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=-2, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=-1, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=-1, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=0, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=0, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=1, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=1, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=2, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=2, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=3, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=3, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=4, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=4, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=5, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=5, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=6, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=6, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND TRUE i <= *pa [L43] ++i VAL [d1={4:0}, d2={5:0}, i=7, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] EXPR \read(*pa) VAL [\read(*pa)=6, d1={4:0}, d2={5:0}, i=7, pa={4:32}, pd1={4:0}, pd2={4:0}] [L42] COND FALSE !(i <= *pa) [L45] CALL, EXPR check(pd2, i) [L30] EXPR s1->array[i] [L30] return s1->array[i] == i; [L45] RET, EXPR check(pd2, i) [L45] COND TRUE !check(pd2, i) [L52] reach_error() VAL [d1={4:0}, d2={5:0}, i=7, pa={4:32}, pd1={4:0}, pd2={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 339 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 247 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 401 IncrementalHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 92 mSDtfsCounter, 401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 298 ConstructedInterpolants, 2 QuantifiedInterpolants, 2689 SizeOfPredicates, 35 NumberOfNonLiveVariables, 513 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 33/429 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 15:38:56,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e17858-2314-4b43-95f5-f91b33de6e2e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE