./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/avg05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/avg05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02f02b7f59fc1c3b5c77751f648b2e92e85109b700d3d48af7999437b36b94ea --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:17:08,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:17:08,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:17:08,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:17:08,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:17:08,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:17:08,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:17:08,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:17:08,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:17:08,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:17:08,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:17:08,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:17:08,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:17:08,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:17:08,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:17:08,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:17:08,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:17:08,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:17:08,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:17:08,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:17:08,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:17:08,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:17:08,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:17:08,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:17:08,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:17:09,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:17:09,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:17:09,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:17:09,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:17:09,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:17:09,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:17:09,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:17:09,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:17:09,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:17:09,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:17:09,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:17:09,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:17:09,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:17:09,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:17:09,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:17:09,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:17:09,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:17:09,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:17:09,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:17:09,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:17:09,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:17:09,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:17:09,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:17:09,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:17:09,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:17:09,063 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:17:09,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:17:09,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:17:09,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:17:09,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:17:09,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:17:09,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:17:09,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:17:09,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:17:09,066 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:17:09,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:17:09,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:17:09,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:17:09,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:17:09,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:17:09,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:17:09,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:09,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:17:09,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:17:09,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:17:09,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:17:09,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:17:09,070 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:17:09,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:17:09,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:17:09,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f02b7f59fc1c3b5c77751f648b2e92e85109b700d3d48af7999437b36b94ea [2022-11-18 20:17:09,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:17:09,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:17:09,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:17:09,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:17:09,393 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:17:09,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/reducercommutativity/avg05-1.i [2022-11-18 20:17:09,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/data/732d6921c/4c6af834b3ce4f1eaa79f87cc4135b93/FLAG4d5fe3258 [2022-11-18 20:17:09,966 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:17:09,966 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/sv-benchmarks/c/reducercommutativity/avg05-1.i [2022-11-18 20:17:09,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/data/732d6921c/4c6af834b3ce4f1eaa79f87cc4135b93/FLAG4d5fe3258 [2022-11-18 20:17:10,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/data/732d6921c/4c6af834b3ce4f1eaa79f87cc4135b93 [2022-11-18 20:17:10,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:17:10,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:17:10,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:10,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:17:10,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:17:10,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2363ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10, skipping insertion in model container [2022-11-18 20:17:10,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:17:10,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:17:10,594 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/sv-benchmarks/c/reducercommutativity/avg05-1.i[1275,1288] [2022-11-18 20:17:10,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:10,605 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:17:10,626 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/sv-benchmarks/c/reducercommutativity/avg05-1.i[1275,1288] [2022-11-18 20:17:10,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:10,641 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:17:10,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10 WrapperNode [2022-11-18 20:17:10,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:10,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:10,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:17:10,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:17:10,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,674 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-18 20:17:10,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:10,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:17:10,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:17:10,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:17:10,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,697 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:17:10,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:17:10,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:17:10,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:17:10,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (1/1) ... [2022-11-18 20:17:10,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:17:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:10,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:17:10,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:17:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:17:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:17:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:17:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:17:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-11-18 20:17:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-11-18 20:17:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:17:10,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:17:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:17:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:17:10,886 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:17:10,888 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:17:11,141 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:17:11,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:17:11,147 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:17:11,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:11 BoogieIcfgContainer [2022-11-18 20:17:11,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:17:11,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:17:11,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:17:11,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:17:11,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:17:10" (1/3) ... [2022-11-18 20:17:11,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeec79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:11, skipping insertion in model container [2022-11-18 20:17:11,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:10" (2/3) ... [2022-11-18 20:17:11,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeec79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:17:11, skipping insertion in model container [2022-11-18 20:17:11,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:11" (3/3) ... [2022-11-18 20:17:11,170 INFO L112 eAbstractionObserver]: Analyzing ICFG avg05-1.i [2022-11-18 20:17:11,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:17:11,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:17:11,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:17:11,316 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3771533a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:17:11,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:17:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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) [2022-11-18 20:17:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:17:11,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:11,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:11,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:11,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:11,347 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2022-11-18 20:17:11,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:11,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954480711] [2022-11-18 20:17:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:11,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:17:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:17:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 20:17:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:17:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:11,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954480711] [2022-11-18 20:17:11,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954480711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:11,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571726463] [2022-11-18 20:17:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:11,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:11,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:11,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:11,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:17:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:11,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:17:11,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:17:12,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:17:12,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571726463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:12,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:17:12,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:17:12,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719678685] [2022-11-18 20:17:12,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:12,056 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 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 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:17:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:12,110 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-18 20:17:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:12,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-18 20:17:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:12,131 INFO L225 Difference]: With dead ends: 50 [2022-11-18 20:17:12,132 INFO L226 Difference]: Without dead ends: 24 [2022-11-18 20:17:12,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:12,138 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:12,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-18 20:17:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-18 20:17:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-11-18 20:17:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-18 20:17:12,183 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-11-18 20:17:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:12,183 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-18 20:17:12,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:17:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-18 20:17:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:17:12,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:12,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:12,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:12,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:17:12,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2022-11-18 20:17:12,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591946531] [2022-11-18 20:17:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:17:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:17:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:12,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:17:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:17:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591946531] [2022-11-18 20:17:12,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591946531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:12,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930532419] [2022-11-18 20:17:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:12,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:12,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:12,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:17:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:12,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:17:12,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:17:12,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:17:12,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930532419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:12,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:17:12,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:17:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500041315] [2022-11-18 20:17:12,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:12,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:12,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:12,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:12,776 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:17:12,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:12,788 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-18 20:17:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:12,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-18 20:17:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:12,790 INFO L225 Difference]: With dead ends: 42 [2022-11-18 20:17:12,790 INFO L226 Difference]: Without dead ends: 25 [2022-11-18 20:17:12,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:17:12,792 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:12,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-18 20:17:12,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-18 20:17:12,797 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) [2022-11-18 20:17:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-18 20:17:12,798 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-11-18 20:17:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:12,799 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-18 20:17:12,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:17:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-18 20:17:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:17:12,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:12,801 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:12,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:17:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 20:17:13,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2022-11-18 20:17:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:13,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113120605] [2022-11-18 20:17:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:17:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:17:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:17:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:17:13,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113120605] [2022-11-18 20:17:13,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113120605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207433854] [2022-11-18 20:17:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:13,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:13,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:13,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:17:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:17:13,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:17:13,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:17:13,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207433854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:13,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:17:13,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-18 20:17:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866856822] [2022-11-18 20:17:13,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:13,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:17:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:13,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:13,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:17:13,302 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:17:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:13,315 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-18 20:17:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:13,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-18 20:17:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:13,317 INFO L225 Difference]: With dead ends: 39 [2022-11-18 20:17:13,317 INFO L226 Difference]: Without dead ends: 26 [2022-11-18 20:17:13,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:17:13,319 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:13,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:13,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-18 20:17:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-18 20:17:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-11-18 20:17:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-18 20:17:13,325 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-11-18 20:17:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:13,327 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-18 20:17:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:17:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-18 20:17:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 20:17:13,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:13,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:13,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:13,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:13,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2022-11-18 20:17:13,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:13,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908130052] [2022-11-18 20:17:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:17:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:17:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:17:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:17:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:13,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908130052] [2022-11-18 20:17:13,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908130052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:13,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515976546] [2022-11-18 20:17:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:13,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:13,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:13,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:13,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:17:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:13,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:17:13,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:17:13,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:17:13,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515976546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:13,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:17:13,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-18 20:17:13,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421435749] [2022-11-18 20:17:13,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:13,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:17:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:17:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:17:13,994 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:17:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:14,064 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-11-18 20:17:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:17:14,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-11-18 20:17:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:14,065 INFO L225 Difference]: With dead ends: 54 [2022-11-18 20:17:14,066 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 20:17:14,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:17:14,067 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:14,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 20:17:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-18 20:17:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2022-11-18 20:17:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-18 20:17:14,076 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-11-18 20:17:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:14,076 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-18 20:17:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:17:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-18 20:17:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:17:14,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:14,078 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:14,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:14,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1299679203, now seen corresponding path program 2 times [2022-11-18 20:17:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304936417] [2022-11-18 20:17:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:17:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:14,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:17:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:14,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:17:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-18 20:17:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304936417] [2022-11-18 20:17:14,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304936417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162963743] [2022-11-18 20:17:14,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:17:14,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:14,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:14,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:17:14,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:17:14,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:17:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:17:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:17:14,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:17:14,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162963743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:14,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:17:14,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2022-11-18 20:17:14,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638955377] [2022-11-18 20:17:14,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:17:14,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:17:14,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:17:14,659 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:17:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:14,719 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2022-11-18 20:17:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:17:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-11-18 20:17:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:14,725 INFO L225 Difference]: With dead ends: 60 [2022-11-18 20:17:14,725 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 20:17:14,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:17:14,729 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:14,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 100 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:14,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 20:17:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-11-18 20:17:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 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) [2022-11-18 20:17:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-11-18 20:17:14,760 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 50 [2022-11-18 20:17:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:14,761 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-11-18 20:17:14,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:17:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-11-18 20:17:14,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:17:14,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:14,766 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:14,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:14,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:14,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1889542979, now seen corresponding path program 3 times [2022-11-18 20:17:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:14,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230492028] [2022-11-18 20:17:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:17:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:17:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:17:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:17:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:15,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230492028] [2022-11-18 20:17:15,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230492028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:15,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399517485] [2022-11-18 20:17:15,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:17:15,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:15,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:15,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:17:15,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:17:15,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:17:15,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:17:15,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:17:15,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:17:15,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399517485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:15,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:17:15,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-11-18 20:17:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504373020] [2022-11-18 20:17:15,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:15,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:17:15,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:15,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:17:15,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:17:15,290 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:17:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:15,313 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-11-18 20:17:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:17:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-11-18 20:17:15,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:15,315 INFO L225 Difference]: With dead ends: 66 [2022-11-18 20:17:15,315 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:17:15,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:17:15,316 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:15,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:17:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-18 20:17:15,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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) [2022-11-18 20:17:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-18 20:17:15,323 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 54 [2022-11-18 20:17:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:15,323 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-18 20:17:15,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:17:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-18 20:17:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:17:15,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:15,325 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:15,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:15,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:15,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:15,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2086234039, now seen corresponding path program 4 times [2022-11-18 20:17:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464534006] [2022-11-18 20:17:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:17:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:17:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:17:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-18 20:17:15,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:15,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464534006] [2022-11-18 20:17:15,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464534006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:17:15,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330623631] [2022-11-18 20:17:15,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:17:15,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:15,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:15,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:17:15,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:17:15,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:17:15,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:17:15,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:17:15,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 4 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-18 20:17:15,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:17:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-18 20:17:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330623631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:15,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:17:15,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-11-18 20:17:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991255120] [2022-11-18 20:17:15,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:15,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:17:15,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:17:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:17:15,874 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:17:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:15,897 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2022-11-18 20:17:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:17:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2022-11-18 20:17:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:15,899 INFO L225 Difference]: With dead ends: 68 [2022-11-18 20:17:15,899 INFO L226 Difference]: Without dead ends: 47 [2022-11-18 20:17:15,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:17:15,900 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:15,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 66 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:17:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-18 20:17:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-18 20:17:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 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) [2022-11-18 20:17:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-18 20:17:15,906 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 72 [2022-11-18 20:17:15,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:15,907 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-18 20:17:15,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:17:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-18 20:17:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:17:15,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:15,908 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:15,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:17:16,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash 319930483, now seen corresponding path program 5 times [2022-11-18 20:17:16,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376574848] [2022-11-18 20:17:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:18:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:18:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:18:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:18:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:18:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:38,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376574848] [2022-11-18 20:18:38,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376574848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:18:38,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167316131] [2022-11-18 20:18:38,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:18:38,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:38,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:38,251 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:38,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21861a94-bb25-4490-9308-ba7367d91bb7/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:18:38,802 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-11-18 20:18:38,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:38,814 WARN L261 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 179 conjunts are in the unsatisfiable core [2022-11-18 20:18:38,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:38,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:18:39,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 20:18:39,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:39,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-18 20:18:39,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:39,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:39,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-11-18 20:18:40,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:40,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:40,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:40,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:40,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:18:40,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2022-11-18 20:18:46,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:46,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:46,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:46,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:19:16,993 WARN L233 SmtUtils]: Spent 30.09s on a formula simplification. DAG size of input: 1298 DAG size of output: 460 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:19:16,996 INFO L321 Elim1Store]: treesize reduction 4709, result has 25.1 percent of original size [2022-11-18 20:19:16,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 30 select indices, 30 select index equivalence classes, 10 disjoint index pairs (out of 435 index pairs), introduced 30 new quantified variables, introduced 460 case distinctions, treesize of input 1014 treesize of output 1875