./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R --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 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 --- 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-38b53e6 [2022-11-25 15:45:44,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:45:44,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:45:44,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:45:44,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:45:44,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:45:44,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:45:44,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:45:44,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:45:44,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:45:44,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:45:44,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:45:44,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:45:44,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:45:44,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:45:44,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:45:44,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:45:44,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:45:44,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:45:44,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:45:44,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:45:44,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:45:44,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:45:44,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:45:44,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:45:44,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:45:44,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:45:44,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:45:44,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:45:44,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:45:44,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:45:44,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:45:44,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:45:44,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:45:44,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:45:44,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:45:44,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:45:44,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:45:44,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:45:44,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:45:44,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:45:44,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:45:45,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:45:45,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:45:45,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:45:45,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:45:45,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:45:45,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:45:45,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:45:45,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:45:45,037 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:45:45,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:45:45,039 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:45:45,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:45:45,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:45:45,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:45:45,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:45:45,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:45:45,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:45:45,041 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:45:45,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:45:45,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:45:45,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:45:45,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:45:45,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:45:45,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:45:45,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:45:45,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:45:45,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:45:45,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:45:45,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:45:45,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:45:45,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:45:45,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:45:45,046 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:45:45,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:45:45,048 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_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 [2022-11-25 15:45:45,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:45:45,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:45:45,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:45:45,486 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:45:45,487 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:45:45,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2022-11-25 15:45:49,233 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:45:49,501 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:45:49,502 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2022-11-25 15:45:49,510 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/data/809864a0b/d471e76082b5460296973c4bf7f8cd39/FLAG72c7b531e [2022-11-25 15:45:49,530 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/data/809864a0b/d471e76082b5460296973c4bf7f8cd39 [2022-11-25 15:45:49,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:45:49,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:45:49,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:45:49,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:45:49,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:45:49,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b763d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49, skipping insertion in model container [2022-11-25 15:45:49,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:45:49,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:45:49,760 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_d8f1f449-1cb8-404f-8330-d712e041e700/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c[415,428] [2022-11-25 15:45:49,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:45:49,800 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:45:49,815 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_d8f1f449-1cb8-404f-8330-d712e041e700/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c[415,428] [2022-11-25 15:45:49,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:45:49,840 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:45:49,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49 WrapperNode [2022-11-25 15:45:49,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:45:49,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:45:49,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:45:49,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:45:49,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,888 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2022-11-25 15:45:49,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:45:49,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:45:49,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:45:49,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:45:49,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,915 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:45:49,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:45:49,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:45:49,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:45:49,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (1/1) ... [2022-11-25 15:45:49,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:45:49,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:45:49,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:45:49,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:45:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:45:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 15:45:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 15:45:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:45:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:45:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:45:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:45:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:45:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:45:50,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:45:50,101 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:45:50,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:45:50,305 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:45:50,313 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:45:50,314 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 15:45:50,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:45:50 BoogieIcfgContainer [2022-11-25 15:45:50,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:45:50,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:45:50,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:45:50,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:45:50,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:45:49" (1/3) ... [2022-11-25 15:45:50,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4301a7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:45:50, skipping insertion in model container [2022-11-25 15:45:50,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:45:49" (2/3) ... [2022-11-25 15:45:50,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4301a7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:45:50, skipping insertion in model container [2022-11-25 15:45:50,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:45:50" (3/3) ... [2022-11-25 15:45:50,329 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2022-11-25 15:45:50,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:45:50,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:45:50,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:45:50,426 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;@1ed55338, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:45:50,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:45:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:45:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 15:45:50,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:50,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:50,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1607472667, now seen corresponding path program 1 times [2022-11-25 15:45:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:50,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059592830] [2022-11-25 15:45:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059592830] [2022-11-25 15:45:50,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059592830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:50,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:50,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:45:50,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475930534] [2022-11-25 15:45:50,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:50,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:45:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:45:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:45:50,935 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:50,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:50,975 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2022-11-25 15:45:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:45:50,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 15:45:50,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:50,988 INFO L225 Difference]: With dead ends: 50 [2022-11-25 15:45:50,989 INFO L226 Difference]: Without dead ends: 22 [2022-11-25 15:45:50,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:45:51,005 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-11-25 15:45:51,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:45:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-25 15:45:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-25 15:45:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:45:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-25 15:45:51,068 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2022-11-25 15:45:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:51,068 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-25 15:45:51,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-25 15:45:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 15:45:51,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:51,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:51,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:45:51,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:51,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1898116011, now seen corresponding path program 1 times [2022-11-25 15:45:51,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:51,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909382572] [2022-11-25 15:45:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:45:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:51,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909382572] [2022-11-25 15:45:51,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909382572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:45:51,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:45:51,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:45:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037010183] [2022-11-25 15:45:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:45:51,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:45:51,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:51,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:45:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:45:51,317 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:51,422 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-25 15:45:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:45:51,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 15:45:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:51,424 INFO L225 Difference]: With dead ends: 40 [2022-11-25 15:45:51,424 INFO L226 Difference]: Without dead ends: 30 [2022-11-25 15:45:51,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:45:51,426 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:51,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:45:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-25 15:45:51,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2022-11-25 15:45:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 15:45:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-25 15:45:51,473 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2022-11-25 15:45:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:51,474 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-25 15:45:51,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:45:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-25 15:45:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 15:45:51,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:51,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:51,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:45:51,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:51,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash 544146986, now seen corresponding path program 1 times [2022-11-25 15:45:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:51,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598210440] [2022-11-25 15:45:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:45:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:51,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:45:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:51,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:45:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 15:45:51,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598210440] [2022-11-25 15:45:51,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598210440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:51,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783846007] [2022-11-25 15:45:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:51,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:51,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:45:51,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:45:51,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:45:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:45:52,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 15:45:52,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 15:45:52,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783846007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:45:52,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:45:52,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2022-11-25 15:45:52,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009378157] [2022-11-25 15:45:52,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:52,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 15:45:52,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:52,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 15:45:52,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:45:52,439 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 15:45:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:52,761 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2022-11-25 15:45:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:45:52,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 29 [2022-11-25 15:45:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:52,763 INFO L225 Difference]: With dead ends: 72 [2022-11-25 15:45:52,764 INFO L226 Difference]: Without dead ends: 61 [2022-11-25 15:45:52,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:45:52,766 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:52,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 38 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:45:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-25 15:45:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 48. [2022-11-25 15:45:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-25 15:45:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2022-11-25 15:45:52,784 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 29 [2022-11-25 15:45:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:52,785 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2022-11-25 15:45:52,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 15:45:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2022-11-25 15:45:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 15:45:52,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:52,789 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:52,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:52,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:52,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1645511465, now seen corresponding path program 2 times [2022-11-25 15:45:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660633593] [2022-11-25 15:45:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:52,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:45:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:45:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:45:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 15:45:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:45:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 15:45:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 15:45:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 15:45:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 15:45:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:45:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:45:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:45:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:45:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:53,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660633593] [2022-11-25 15:45:53,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660633593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:53,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496326660] [2022-11-25 15:45:53,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:45:53,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:53,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:45:53,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:45:53,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:45:53,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:45:53,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:53,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:45:53,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:45:54,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-25 15:45:54,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496326660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:45:54,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:45:54,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2022-11-25 15:45:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186118228] [2022-11-25 15:45:54,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 15:45:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:54,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 15:45:54,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2022-11-25 15:45:54,468 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-25 15:45:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:45:55,024 INFO L93 Difference]: Finished difference Result 162 states and 206 transitions. [2022-11-25 15:45:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:45:55,026 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 89 [2022-11-25 15:45:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:45:55,034 INFO L225 Difference]: With dead ends: 162 [2022-11-25 15:45:55,039 INFO L226 Difference]: Without dead ends: 145 [2022-11-25 15:45:55,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:45:55,041 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 282 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:45:55,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 63 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:45:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-25 15:45:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2022-11-25 15:45:55,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-25 15:45:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2022-11-25 15:45:55,090 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 89 [2022-11-25 15:45:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:45:55,091 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2022-11-25 15:45:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-25 15:45:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2022-11-25 15:45:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-25 15:45:55,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:45:55,108 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:45:55,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:45:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:55,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:45:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:45:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash 548463335, now seen corresponding path program 3 times [2022-11-25 15:45:55,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:45:55,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385540794] [2022-11-25 15:45:55,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:45:55,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:45:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:45:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:45:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:45:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 15:45:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:45:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 15:45:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 15:45:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 15:45:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 15:45:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:45:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:45:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:45:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:45:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:45:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:45:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 15:45:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:45:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:45:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:45:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:45:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 15:45:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 15:45:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 15:45:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-25 15:45:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-25 15:45:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:45:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:45:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-25 15:45:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:45:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 15:45:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:45:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2022-11-25 15:45:56,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:45:56,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385540794] [2022-11-25 15:45:56,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385540794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:45:56,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495593819] [2022-11-25 15:45:56,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:45:56,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:45:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:45:56,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:45:56,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:45:57,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-25 15:45:57,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:45:57,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:45:57,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:45:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2022-11-25 15:45:58,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:45:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2022-11-25 15:45:58,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495593819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:45:58,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:45:58,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2022-11-25 15:45:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495894945] [2022-11-25 15:45:58,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:45:58,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 15:45:58,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:45:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 15:45:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 15:45:58,702 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-25 15:46:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:46:00,111 INFO L93 Difference]: Finished difference Result 342 states and 434 transitions. [2022-11-25 15:46:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 15:46:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 209 [2022-11-25 15:46:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:46:00,121 INFO L225 Difference]: With dead ends: 342 [2022-11-25 15:46:00,124 INFO L226 Difference]: Without dead ends: 313 [2022-11-25 15:46:00,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 15:46:00,131 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 634 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:46:00,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 131 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 15:46:00,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-25 15:46:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 192. [2022-11-25 15:46:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-25 15:46:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 259 transitions. [2022-11-25 15:46:00,217 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 259 transitions. Word has length 209 [2022-11-25 15:46:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:46:00,221 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 259 transitions. [2022-11-25 15:46:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7567567567567566) internal successors, (102), 37 states have internal predecessors, (102), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-11-25 15:46:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 259 transitions. [2022-11-25 15:46:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-25 15:46:00,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:46:00,243 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:00,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:46:00,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:46:00,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:46:00,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1915094685, now seen corresponding path program 4 times [2022-11-25 15:46:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:00,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641714911] [2022-11-25 15:46:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:00,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 15:46:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:46:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:46:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 15:46:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:46:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 15:46:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 15:46:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 15:46:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 15:46:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:46:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:46:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:46:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:46:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-25 15:46:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-25 15:46:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 15:46:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:46:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:02,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:46:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:46:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-25 15:46:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 15:46:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-25 15:46:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-25 15:46:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-25 15:46:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-25 15:46:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-25 15:46:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-25 15:46:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-25 15:46:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-25 15:46:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 15:46:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-11-25 15:46:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-25 15:46:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-25 15:46:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-25 15:46:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-11-25 15:46:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-25 15:46:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-25 15:46:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-11-25 15:46:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-11-25 15:46:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-11-25 15:46:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-11-25 15:46:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 15:46:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-25 15:46:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-25 15:46:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-25 15:46:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-25 15:46:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-25 15:46:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2022-11-25 15:46:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2022-11-25 15:46:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-11-25 15:46:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-25 15:46:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2022-11-25 15:46:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-11-25 15:46:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-11-25 15:46:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2022-11-25 15:46:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-25 15:46:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-11-25 15:46:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-11-25 15:46:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-11-25 15:46:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-11-25 15:46:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2022-11-25 15:46:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-11-25 15:46:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-11-25 15:46:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2022-11-25 15:46:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-11-25 15:46:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2022-11-25 15:46:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10472 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 9064 trivial. 0 not checked. [2022-11-25 15:46:03,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:03,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641714911] [2022-11-25 15:46:03,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641714911] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:46:03,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788706130] [2022-11-25 15:46:03,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:46:03,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:46:03,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:46:03,275 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:46:03,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8f1f449-1cb8-404f-8330-d712e041e700/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process