./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS --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 2409cd2f018515417b0b6bf5d396e4bc80c02540769112137ebf388167bdf776 --- 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-4e7fbc6 [2022-11-23 01:58:40,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:58:40,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:58:40,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:58:40,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:58:40,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:58:40,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:58:40,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:58:40,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:58:40,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:58:40,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:58:40,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:58:40,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:58:40,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:58:40,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:58:40,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:58:40,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:58:40,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:58:40,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:58:40,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:58:40,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:58:40,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:58:40,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:58:40,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:58:40,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:58:40,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:58:40,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:58:40,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:58:40,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:58:40,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:58:40,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:58:40,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:58:40,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:58:40,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:58:40,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:58:40,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:58:40,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:58:40,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:58:40,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:58:40,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:58:40,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:58:40,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:58:40,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:58:40,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:58:40,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:58:40,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:58:40,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:58:40,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:58:40,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:58:40,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:58:40,912 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:58:40,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:58:40,913 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:58:40,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:58:40,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:58:40,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:58:40,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:58:40,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:58:40,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:58:40,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:58:40,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:58:40,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:58:40,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:58:40,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:58:40,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:58:40,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:58:40,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:40,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:58:40,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:58:40,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:58:40,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:58:40,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:58:40,918 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:58:40,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:58:40,918 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:58:40,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:58:40,919 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2409cd2f018515417b0b6bf5d396e4bc80c02540769112137ebf388167bdf776 [2022-11-23 01:58:41,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:58:41,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:58:41,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:58:41,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:58:41,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:58:41,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/recursive-simple/id_i25_o25-1.c [2022-11-23 01:58:44,408 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:58:44,644 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:58:44,644 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c [2022-11-23 01:58:44,650 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/data/43ecc2404/d140ab0dd7eb40ad8a4e80b9c41171b9/FLAG104c556d4 [2022-11-23 01:58:44,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/data/43ecc2404/d140ab0dd7eb40ad8a4e80b9c41171b9 [2022-11-23 01:58:44,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:58:44,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:58:44,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:58:44,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:58:44,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:58:44,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:44,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33658101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44, skipping insertion in model container [2022-11-23 01:58:44,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:44,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:58:44,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:58:44,889 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c[454,467] [2022-11-23 01:58:44,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:58:44,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:58:44,932 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/sv-benchmarks/c/recursive-simple/id_i25_o25-1.c[454,467] [2022-11-23 01:58:44,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:58:44,948 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:58:44,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44 WrapperNode [2022-11-23 01:58:44,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:58:44,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:58:44,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:58:44,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:58:44,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:44,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:44,986 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-23 01:58:44,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:58:44,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:58:44,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:58:44,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:58:44,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:44,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:44,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,009 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:58:45,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:58:45,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:58:45,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:58:45,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (1/1) ... [2022-11-23 01:58:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:58:45,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:45,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:58:45,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:58:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:58:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:58:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:58:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:58:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-23 01:58:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-23 01:58:45,159 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:58:45,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:58:45,255 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:58:45,261 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:58:45,261 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 01:58:45,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:45 BoogieIcfgContainer [2022-11-23 01:58:45,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:58:45,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:58:45,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:58:45,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:58:45,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:44" (1/3) ... [2022-11-23 01:58:45,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb4dead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:45, skipping insertion in model container [2022-11-23 01:58:45,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:44" (2/3) ... [2022-11-23 01:58:45,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb4dead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:45, skipping insertion in model container [2022-11-23 01:58:45,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:45" (3/3) ... [2022-11-23 01:58:45,273 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2022-11-23 01:58:45,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:58:45,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:58:45,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:58:45,356 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;@1e2883db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:58:45,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:58:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 01:58:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 01:58:45,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:45,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:45,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:45,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:45,388 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2022-11-23 01:58:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886168109] [2022-11-23 01:58:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:45,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886168109] [2022-11-23 01:58:45,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886168109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:45,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:45,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:58:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329984318] [2022-11-23 01:58:45,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:58:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:58:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:58:45,763 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 01:58:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:45,817 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-11-23 01:58:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:58:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-23 01:58:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:45,827 INFO L225 Difference]: With dead ends: 25 [2022-11-23 01:58:45,828 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 01:58:45,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:58:45,834 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:45,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 35 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 01:58:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 01:58:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 01:58:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-23 01:58:45,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2022-11-23 01:58:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:45,919 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-23 01:58:45,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 01:58:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-23 01:58:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 01:58:45,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:45,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:45,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:58:45,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2022-11-23 01:58:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:45,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367717042] [2022-11-23 01:58:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:58:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:46,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367717042] [2022-11-23 01:58:46,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367717042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:46,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525797176] [2022-11-23 01:58:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:46,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:46,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:46,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:46,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:58:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:46,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 01:58:46,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 01:58:46,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:58:46,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525797176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:46,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:46,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-11-23 01:58:46,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848481481] [2022-11-23 01:58:46,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:46,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:58:46,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:58:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:58:46,733 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 01:58:46,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:46,796 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-23 01:58:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:58:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16 [2022-11-23 01:58:46,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:46,798 INFO L225 Difference]: With dead ends: 22 [2022-11-23 01:58:46,798 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 01:58:46,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:58:46,800 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 38 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:46,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 28 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 01:58:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 01:58:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 01:58:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-23 01:58:46,807 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2022-11-23 01:58:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:46,807 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-23 01:58:46,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 01:58:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-23 01:58:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 01:58:46,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:46,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:46,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:47,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:47,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:47,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2022-11-23 01:58:47,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:47,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727353324] [2022-11-23 01:58:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:47,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:58:47,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:47,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727353324] [2022-11-23 01:58:47,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727353324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:47,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719943310] [2022-11-23 01:58:47,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:58:47,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:47,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:47,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:47,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:58:47,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:58:47,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:58:47,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 01:58:47,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 01:58:47,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:58:47,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719943310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:47,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:47,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2022-11-23 01:58:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041324225] [2022-11-23 01:58:47,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:47,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:58:47,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:58:47,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:58:47,825 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-23 01:58:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:47,883 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-23 01:58:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:58:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2022-11-23 01:58:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:47,884 INFO L225 Difference]: With dead ends: 25 [2022-11-23 01:58:47,884 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 01:58:47,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:58:47,886 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:47,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 49 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 01:58:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 01:58:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:58:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-23 01:58:47,893 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2022-11-23 01:58:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:47,893 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-23 01:58:47,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-23 01:58:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-23 01:58:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 01:58:47,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:47,895 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:47,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:48,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:48,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2022-11-23 01:58:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:48,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995503561] [2022-11-23 01:58:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:48,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 01:58:48,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995503561] [2022-11-23 01:58:48,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995503561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660378095] [2022-11-23 01:58:48,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 01:58:48,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:48,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:48,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:48,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:58:48,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 01:58:48,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:58:48,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 01:58:48,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 01:58:48,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:58:49,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660378095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:49,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:49,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2022-11-23 01:58:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576017585] [2022-11-23 01:58:49,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:49,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 01:58:49,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:49,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 01:58:49,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:58:49,124 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-23 01:58:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:49,210 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-11-23 01:58:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 01:58:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 28 [2022-11-23 01:58:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:49,212 INFO L225 Difference]: With dead ends: 28 [2022-11-23 01:58:49,212 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 01:58:49,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:58:49,214 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:49,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 59 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 01:58:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-23 01:58:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 01:58:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-23 01:58:49,221 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2022-11-23 01:58:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:49,222 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-23 01:58:49,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-23 01:58:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-23 01:58:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 01:58:49,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:49,224 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:49,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:49,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:49,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2022-11-23 01:58:49,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:49,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512513020] [2022-11-23 01:58:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:49,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:49,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 01:58:49,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:49,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512513020] [2022-11-23 01:58:49,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512513020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:49,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371032996] [2022-11-23 01:58:49,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 01:58:49,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:49,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:49,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:49,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:58:49,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 01:58:49,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:58:49,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 01:58:49,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 01:58:49,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 01:58:50,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371032996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:50,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:50,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 18 [2022-11-23 01:58:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181455842] [2022-11-23 01:58:50,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:50,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 01:58:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 01:58:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-23 01:58:50,850 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-23 01:58:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:50,969 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-23 01:58:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:58:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 34 [2022-11-23 01:58:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:50,971 INFO L225 Difference]: With dead ends: 31 [2022-11-23 01:58:50,971 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 01:58:50,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-11-23 01:58:50,974 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 103 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:50,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 49 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:58:50,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 01:58:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 01:58:50,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:58:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-23 01:58:50,991 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2022-11-23 01:58:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:50,991 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-23 01:58:50,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-23 01:58:50,992 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-23 01:58:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-23 01:58:50,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:50,993 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:51,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:51,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:51,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:51,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2022-11-23 01:58:51,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:51,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135048678] [2022-11-23 01:58:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:51,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 01:58:51,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:51,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135048678] [2022-11-23 01:58:51,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135048678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:51,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625378763] [2022-11-23 01:58:51,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 01:58:51,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:51,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:51,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:51,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 01:58:51,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-23 01:58:51,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:58:51,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 01:58:51,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 01:58:51,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 01:58:52,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625378763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:52,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:52,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 20 [2022-11-23 01:58:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880009292] [2022-11-23 01:58:52,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:52,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 01:58:52,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:52,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 01:58:52,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:58:52,887 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-23 01:58:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:52,986 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2022-11-23 01:58:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:58:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 40 [2022-11-23 01:58:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:52,988 INFO L225 Difference]: With dead ends: 34 [2022-11-23 01:58:52,988 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 01:58:52,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2022-11-23 01:58:52,990 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:52,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 65 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:58:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 01:58:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-23 01:58:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:58:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-23 01:58:52,996 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2022-11-23 01:58:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:52,996 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-23 01:58:52,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-23 01:58:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-23 01:58:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 01:58:52,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:52,998 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:53,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:53,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:53,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:53,206 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2022-11-23 01:58:53,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:53,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914236928] [2022-11-23 01:58:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:53,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-23 01:58:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914236928] [2022-11-23 01:58:53,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914236928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215214636] [2022-11-23 01:58:53,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 01:58:53,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:53,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:53,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:53,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 01:58:53,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-23 01:58:53,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:58:53,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 01:58:53,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-23 01:58:53,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:58:55,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215214636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:55,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:55,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 22 [2022-11-23 01:58:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263098034] [2022-11-23 01:58:55,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 01:58:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 01:58:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2022-11-23 01:58:55,651 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-23 01:58:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:55,779 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2022-11-23 01:58:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:58:55,780 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 46 [2022-11-23 01:58:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:55,784 INFO L225 Difference]: With dead ends: 37 [2022-11-23 01:58:55,784 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 01:58:55,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2022-11-23 01:58:55,786 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 77 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:58:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 01:58:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 01:58:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 01:58:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-11-23 01:58:55,803 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2022-11-23 01:58:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:55,804 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-11-23 01:58:55,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-23 01:58:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-11-23 01:58:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 01:58:55,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:55,806 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:55,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:56,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 01:58:56,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:56,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:56,012 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2022-11-23 01:58:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:56,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435355406] [2022-11-23 01:58:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:56,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-23 01:58:56,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435355406] [2022-11-23 01:58:56,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435355406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:56,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790908576] [2022-11-23 01:58:56,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 01:58:56,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:56,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:56,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:56,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 01:58:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:56,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 01:58:56,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-23 01:58:56,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 01:58:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790908576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:58:59,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:58:59,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 24 [2022-11-23 01:58:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133454930] [2022-11-23 01:58:59,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:58:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 01:58:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:59,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 01:58:59,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2022-11-23 01:58:59,088 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2022-11-23 01:58:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:59,232 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-11-23 01:58:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 01:58:59,232 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) Word has length 52 [2022-11-23 01:58:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:59,233 INFO L225 Difference]: With dead ends: 40 [2022-11-23 01:58:59,233 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 01:58:59,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 99 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=670, Unknown=0, NotChecked=0, Total=992 [2022-11-23 01:58:59,235 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:59,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 89 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:58:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 01:58:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-23 01:58:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:58:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-11-23 01:58:59,241 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2022-11-23 01:58:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:59,241 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-11-23 01:58:59,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2022-11-23 01:58:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-11-23 01:58:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 01:58:59,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:59,243 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:59,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:59,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:59,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:59,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:59,455 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2022-11-23 01:58:59,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:59,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159793138] [2022-11-23 01:58:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:58:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-23 01:59:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159793138] [2022-11-23 01:59:00,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159793138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669284160] [2022-11-23 01:59:00,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:59:00,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:00,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:00,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:00,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 01:59:00,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:59:00,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:00,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 01:59:00,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-23 01:59:00,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 01:59:03,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669284160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:03,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:03,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 26 [2022-11-23 01:59:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101767191] [2022-11-23 01:59:03,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:03,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-23 01:59:03,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-23 01:59:03,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2022-11-23 01:59:03,340 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2022-11-23 01:59:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:03,475 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2022-11-23 01:59:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 01:59:03,476 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) Word has length 58 [2022-11-23 01:59:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:03,479 INFO L225 Difference]: With dead ends: 43 [2022-11-23 01:59:03,480 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 01:59:03,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=387, Invalid=803, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 01:59:03,481 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:03,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 94 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 01:59:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-23 01:59:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 01:59:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-11-23 01:59:03,487 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2022-11-23 01:59:03,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:03,487 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-11-23 01:59:03,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2022-11-23 01:59:03,488 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-11-23 01:59:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 01:59:03,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:03,489 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:03,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:03,695 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:03,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2022-11-23 01:59:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:03,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411636313] [2022-11-23 01:59:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:03,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:03,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-23 01:59:04,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:04,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411636313] [2022-11-23 01:59:04,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411636313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:04,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647070255] [2022-11-23 01:59:04,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 01:59:04,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:04,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:04,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:04,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 01:59:04,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-23 01:59:04,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:04,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 01:59:04,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-23 01:59:04,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 01:59:08,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647070255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:08,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:08,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 28 [2022-11-23 01:59:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885021849] [2022-11-23 01:59:08,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 01:59:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 01:59:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2022-11-23 01:59:08,676 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2022-11-23 01:59:08,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:08,851 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2022-11-23 01:59:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:59:08,852 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) Word has length 64 [2022-11-23 01:59:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:08,857 INFO L225 Difference]: With dead ends: 46 [2022-11-23 01:59:08,857 INFO L226 Difference]: Without dead ends: 42 [2022-11-23 01:59:08,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=948, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 01:59:08,859 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 114 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:08,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 95 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-23 01:59:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-23 01:59:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 01:59:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2022-11-23 01:59:08,868 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2022-11-23 01:59:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:08,869 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2022-11-23 01:59:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 13 states have call successors, (13), 1 states have call predecessors, (13), 11 states have return successors, (29), 10 states have call predecessors, (29), 13 states have call successors, (29) [2022-11-23 01:59:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2022-11-23 01:59:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 01:59:08,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:08,870 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:08,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:09,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 01:59:09,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:09,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2022-11-23 01:59:09,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:09,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699667951] [2022-11-23 01:59:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:09,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-23 01:59:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699667951] [2022-11-23 01:59:09,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699667951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503679195] [2022-11-23 01:59:09,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 01:59:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:09,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:09,773 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:09,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 01:59:10,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 01:59:10,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:10,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 01:59:10,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-23 01:59:10,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-23 01:59:15,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503679195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:15,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:15,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 30 [2022-11-23 01:59:15,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990340472] [2022-11-23 01:59:15,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:15,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 01:59:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:15,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 01:59:15,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2022-11-23 01:59:15,316 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 30 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 30 states have internal predecessors, (57), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2022-11-23 01:59:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:15,495 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2022-11-23 01:59:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:59:15,495 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 30 states have internal predecessors, (57), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) Word has length 70 [2022-11-23 01:59:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:15,496 INFO L225 Difference]: With dead ends: 49 [2022-11-23 01:59:15,496 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 01:59:15,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 135 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=1105, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 01:59:15,498 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 128 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:15,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 96 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 01:59:15,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-23 01:59:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 01:59:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-11-23 01:59:15,504 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2022-11-23 01:59:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:15,504 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-11-23 01:59:15,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 30 states have internal predecessors, (57), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2022-11-23 01:59:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-11-23 01:59:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 01:59:15,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:15,506 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:15,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:15,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 01:59:15,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:15,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times [2022-11-23 01:59:15,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:15,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855616735] [2022-11-23 01:59:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:15,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-23 01:59:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:16,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855616735] [2022-11-23 01:59:16,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855616735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:16,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692791165] [2022-11-23 01:59:16,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 01:59:16,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:16,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:16,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:16,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 01:59:16,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-11-23 01:59:16,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:16,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 01:59:16,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-11-23 01:59:17,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-23 01:59:23,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692791165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:23,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:23,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 32 [2022-11-23 01:59:23,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416119943] [2022-11-23 01:59:23,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:23,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 01:59:23,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 01:59:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2022-11-23 01:59:23,457 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 32 states have internal predecessors, (61), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2022-11-23 01:59:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:23,670 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2022-11-23 01:59:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:59:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 32 states have internal predecessors, (61), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) Word has length 76 [2022-11-23 01:59:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:23,671 INFO L225 Difference]: With dead ends: 52 [2022-11-23 01:59:23,672 INFO L226 Difference]: Without dead ends: 48 [2022-11-23 01:59:23,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 147 SyntacticMatches, 12 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=618, Invalid=1274, Unknown=0, NotChecked=0, Total=1892 [2022-11-23 01:59:23,673 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 130 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 107 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-23 01:59:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-23 01:59:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 01:59:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2022-11-23 01:59:23,679 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2022-11-23 01:59:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:23,679 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2022-11-23 01:59:23,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 32 states have internal predecessors, (61), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (35), 12 states have call predecessors, (35), 15 states have call successors, (35) [2022-11-23 01:59:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2022-11-23 01:59:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 01:59:23,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:23,681 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:23,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:23,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 01:59:23,888 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:23,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 12 times [2022-11-23 01:59:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:23,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269742386] [2022-11-23 01:59:23,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:23,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 01:59:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:24,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269742386] [2022-11-23 01:59:24,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269742386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:24,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127939285] [2022-11-23 01:59:24,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 01:59:24,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:24,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:24,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:24,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 01:59:25,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-11-23 01:59:25,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 01:59:25,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-23 01:59:25,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-23 01:59:33,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127939285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:33,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:33,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 29] total 34 [2022-11-23 01:59:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541161097] [2022-11-23 01:59:33,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 01:59:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 01:59:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 01:59:33,193 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2022-11-23 01:59:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:33,439 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2022-11-23 01:59:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 01:59:33,439 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) Word has length 82 [2022-11-23 01:59:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:33,440 INFO L225 Difference]: With dead ends: 55 [2022-11-23 01:59:33,441 INFO L226 Difference]: Without dead ends: 51 [2022-11-23 01:59:33,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 159 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=707, Invalid=1455, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 01:59:33,443 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 197 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:33,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 126 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:33,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-23 01:59:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-23 01:59:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 01:59:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-11-23 01:59:33,449 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2022-11-23 01:59:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:33,450 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-11-23 01:59:33,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (38), 13 states have call predecessors, (38), 16 states have call successors, (38) [2022-11-23 01:59:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-11-23 01:59:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 01:59:33,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:33,452 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:33,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:33,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:33,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 13 times [2022-11-23 01:59:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:33,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247750465] [2022-11-23 01:59:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-23 01:59:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247750465] [2022-11-23 01:59:34,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247750465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:34,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047237247] [2022-11-23 01:59:34,847 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 01:59:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:34,849 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:34,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 01:59:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:35,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 01:59:35,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-11-23 01:59:35,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-23 01:59:45,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047237247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:45,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:45,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 36 [2022-11-23 01:59:45,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558527052] [2022-11-23 01:59:45,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:45,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 01:59:45,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 01:59:45,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 01:59:45,236 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 36 states have internal predecessors, (69), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2022-11-23 01:59:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:45,492 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2022-11-23 01:59:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 01:59:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 36 states have internal predecessors, (69), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) Word has length 88 [2022-11-23 01:59:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:45,493 INFO L225 Difference]: With dead ends: 58 [2022-11-23 01:59:45,493 INFO L226 Difference]: Without dead ends: 54 [2022-11-23 01:59:45,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 171 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=802, Invalid=1648, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 01:59:45,495 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 214 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:45,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 117 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-23 01:59:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-23 01:59:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 01:59:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2022-11-23 01:59:45,510 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2022-11-23 01:59:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:45,511 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2022-11-23 01:59:45,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 36 states have internal predecessors, (69), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2022-11-23 01:59:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2022-11-23 01:59:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 01:59:45,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:45,515 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:45,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 01:59:45,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 01:59:45,723 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:59:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:59:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 14 times [2022-11-23 01:59:45,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:59:45,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551438429] [2022-11-23 01:59:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:59:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:59:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:45,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:59:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:59:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-23 01:59:46,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:59:46,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551438429] [2022-11-23 01:59:46,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551438429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:59:46,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320295430] [2022-11-23 01:59:46,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:59:46,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:59:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:59:46,907 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:59:46,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 01:59:47,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:59:47,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:59:47,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 01:59:47,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:59:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-23 01:59:47,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:59:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-23 01:59:59,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320295430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:59:59,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:59:59,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 33] total 38 [2022-11-23 01:59:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807512594] [2022-11-23 01:59:59,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:59:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-23 01:59:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:59:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-23 01:59:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 01:59:59,653 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 38 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 38 states have internal predecessors, (73), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2022-11-23 01:59:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:59:59,930 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2022-11-23 01:59:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 01:59:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 38 states have internal predecessors, (73), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) Word has length 94 [2022-11-23 01:59:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:59:59,932 INFO L225 Difference]: With dead ends: 61 [2022-11-23 01:59:59,932 INFO L226 Difference]: Without dead ends: 57 [2022-11-23 01:59:59,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 183 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=1853, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 01:59:59,933 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 260 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:59:59,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 131 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:59:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-23 01:59:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-23 01:59:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 01:59:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2022-11-23 01:59:59,948 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2022-11-23 01:59:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:59:59,948 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2022-11-23 01:59:59,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 38 states have internal predecessors, (73), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2022-11-23 01:59:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2022-11-23 01:59:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-23 01:59:59,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:59:59,950 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:59:59,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 02:00:00,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 02:00:00,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:00,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 15 times [2022-11-23 02:00:00,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:00,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538193579] [2022-11-23 02:00:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:00,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-23 02:00:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538193579] [2022-11-23 02:00:01,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538193579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:00:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409433636] [2022-11-23 02:00:01,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:00:01,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:00:01,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:00:01,444 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:00:01,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 02:00:02,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-23 02:00:02,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:00:02,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 02:00:02,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:00:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-11-23 02:00:02,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:00:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-23 02:00:17,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409433636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:00:17,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:00:17,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 40 [2022-11-23 02:00:17,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380275620] [2022-11-23 02:00:17,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:00:17,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 02:00:17,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 02:00:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 02:00:17,176 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2022-11-23 02:00:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:17,437 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2022-11-23 02:00:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 02:00:17,438 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) Word has length 100 [2022-11-23 02:00:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:17,439 INFO L225 Difference]: With dead ends: 64 [2022-11-23 02:00:17,439 INFO L226 Difference]: Without dead ends: 60 [2022-11-23 02:00:17,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 195 SyntacticMatches, 16 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1010, Invalid=2070, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 02:00:17,441 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:17,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 143 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:00:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-23 02:00:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-23 02:00:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 02:00:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2022-11-23 02:00:17,446 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100 [2022-11-23 02:00:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:17,446 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2022-11-23 02:00:17,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (47), 16 states have call predecessors, (47), 19 states have call successors, (47) [2022-11-23 02:00:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2022-11-23 02:00:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 02:00:17,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:17,448 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:17,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 02:00:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 02:00:17,657 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 16 times [2022-11-23 02:00:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:17,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249975025] [2022-11-23 02:00:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:19,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:19,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-11-23 02:00:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:19,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249975025] [2022-11-23 02:00:19,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249975025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:00:19,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506065173] [2022-11-23 02:00:19,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:00:19,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:00:19,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:00:19,169 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:00:19,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 02:00:20,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:00:20,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:00:20,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-23 02:00:20,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:00:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-11-23 02:00:20,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:00:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-23 02:00:37,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506065173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:00:37,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:00:37,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 37] total 42 [2022-11-23 02:00:37,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422763502] [2022-11-23 02:00:37,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:00:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-23 02:00:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:37,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-23 02:00:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 02:00:37,825 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 42 states, 40 states have (on average 2.025) internal successors, (81), 42 states have internal predecessors, (81), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) [2022-11-23 02:00:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:38,114 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2022-11-23 02:00:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 02:00:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.025) internal successors, (81), 42 states have internal predecessors, (81), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) Word has length 106 [2022-11-23 02:00:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:38,116 INFO L225 Difference]: With dead ends: 67 [2022-11-23 02:00:38,116 INFO L226 Difference]: Without dead ends: 63 [2022-11-23 02:00:38,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 207 SyntacticMatches, 17 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1123, Invalid=2299, Unknown=0, NotChecked=0, Total=3422 [2022-11-23 02:00:38,117 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 215 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:38,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 142 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:00:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-23 02:00:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-23 02:00:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 02:00:38,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2022-11-23 02:00:38,123 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 106 [2022-11-23 02:00:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:38,123 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2022-11-23 02:00:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.025) internal successors, (81), 42 states have internal predecessors, (81), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (50), 17 states have call predecessors, (50), 20 states have call successors, (50) [2022-11-23 02:00:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2022-11-23 02:00:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 02:00:38,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:38,125 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:38,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 02:00:38,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 02:00:38,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2122437418, now seen corresponding path program 17 times [2022-11-23 02:00:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765086035] [2022-11-23 02:00:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:38,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:00:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2022-11-23 02:00:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:40,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765086035] [2022-11-23 02:00:40,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765086035] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:00:40,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098121433] [2022-11-23 02:00:40,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:00:40,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:00:40,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:00:40,013 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:00:40,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 02:00:41,300 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-11-23 02:00:41,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:00:41,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-23 02:00:41,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:00:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-23 02:00:41,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:01:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-23 02:01:02,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098121433] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:01:02,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:01:02,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 44 [2022-11-23 02:01:02,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709311559] [2022-11-23 02:01:02,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:01:02,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-23 02:01:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-23 02:01:02,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=1389, Unknown=0, NotChecked=0, Total=1892 [2022-11-23 02:01:02,383 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (53), 18 states have call predecessors, (53), 21 states have call successors, (53) [2022-11-23 02:01:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:02,671 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2022-11-23 02:01:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 02:01:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (53), 18 states have call predecessors, (53), 21 states have call successors, (53) Word has length 112 [2022-11-23 02:01:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:02,673 INFO L225 Difference]: With dead ends: 70 [2022-11-23 02:01:02,673 INFO L226 Difference]: Without dead ends: 66 [2022-11-23 02:01:02,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 219 SyntacticMatches, 18 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1242, Invalid=2540, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 02:01:02,675 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:02,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 164 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:01:02,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-23 02:01:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-23 02:01:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (20), 19 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 02:01:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2022-11-23 02:01:02,685 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 112 [2022-11-23 02:01:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:02,687 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2022-11-23 02:01:02,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 21 states have call successors, (21), 1 states have call predecessors, (21), 19 states have return successors, (53), 18 states have call predecessors, (53), 21 states have call successors, (53) [2022-11-23 02:01:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2022-11-23 02:01:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 02:01:02,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:02,689 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:02,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:02,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 02:01:02,900 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash 55840780, now seen corresponding path program 18 times [2022-11-23 02:01:02,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:02,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99040741] [2022-11-23 02:01:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-23 02:01:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:04,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99040741] [2022-11-23 02:01:04,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99040741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:04,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311497242] [2022-11-23 02:01:04,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:01:04,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:04,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:04,663 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:04,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 02:01:06,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-11-23 02:01:06,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:01:06,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-23 02:01:06,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-23 02:01:06,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:01:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-23 02:01:31,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311497242] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:01:31,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:01:31,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 41] total 46 [2022-11-23 02:01:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664259622] [2022-11-23 02:01:31,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:01:31,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 02:01:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 02:01:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 02:01:31,007 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 46 states, 44 states have (on average 2.022727272727273) internal successors, (89), 46 states have internal predecessors, (89), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (56), 19 states have call predecessors, (56), 22 states have call successors, (56) [2022-11-23 02:01:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:31,336 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2022-11-23 02:01:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 02:01:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.022727272727273) internal successors, (89), 46 states have internal predecessors, (89), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (56), 19 states have call predecessors, (56), 22 states have call successors, (56) Word has length 118 [2022-11-23 02:01:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:31,337 INFO L225 Difference]: With dead ends: 73 [2022-11-23 02:01:31,338 INFO L226 Difference]: Without dead ends: 69 [2022-11-23 02:01:31,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 231 SyntacticMatches, 19 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1367, Invalid=2793, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 02:01:31,340 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 287 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:31,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 157 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:01:31,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-23 02:01:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-23 02:01:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-23 02:01:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-11-23 02:01:31,358 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 118 [2022-11-23 02:01:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:31,359 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-11-23 02:01:31,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.022727272727273) internal successors, (89), 46 states have internal predecessors, (89), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (56), 19 states have call predecessors, (56), 22 states have call successors, (56) [2022-11-23 02:01:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-11-23 02:01:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 02:01:31,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:31,361 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:31,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 02:01:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:31,573 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash -806952938, now seen corresponding path program 19 times [2022-11-23 02:01:31,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:31,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396775448] [2022-11-23 02:01:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:01:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2022-11-23 02:01:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396775448] [2022-11-23 02:01:33,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396775448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:01:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593034351] [2022-11-23 02:01:33,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:01:33,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:01:33,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:01:33,346 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:01:33,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 02:01:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:35,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-23 02:01:35,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:01:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2022-11-23 02:01:35,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:02:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:02:04,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593034351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:02:04,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:02:04,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 48 [2022-11-23 02:02:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89545712] [2022-11-23 02:02:04,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:02:04,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 02:02:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:02:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 02:02:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=1659, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 02:02:04,479 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 48 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 48 states have internal predecessors, (93), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (59), 20 states have call predecessors, (59), 23 states have call successors, (59) [2022-11-23 02:02:04,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:02:04,800 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-11-23 02:02:04,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 02:02:04,801 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 48 states have internal predecessors, (93), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (59), 20 states have call predecessors, (59), 23 states have call successors, (59) Word has length 124 [2022-11-23 02:02:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:02:04,802 INFO L225 Difference]: With dead ends: 76 [2022-11-23 02:02:04,802 INFO L226 Difference]: Without dead ends: 72 [2022-11-23 02:02:04,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 243 SyntacticMatches, 20 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1498, Invalid=3058, Unknown=0, NotChecked=0, Total=4556 [2022-11-23 02:02:04,805 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 129 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:02:04,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 170 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:02:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-23 02:02:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-23 02:02:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (22), 21 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-23 02:02:04,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2022-11-23 02:02:04,810 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 124 [2022-11-23 02:02:04,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:02:04,811 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2022-11-23 02:02:04,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.0217391304347827) internal successors, (93), 48 states have internal predecessors, (93), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (59), 20 states have call predecessors, (59), 23 states have call successors, (59) [2022-11-23 02:02:04,811 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2022-11-23 02:02:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 02:02:04,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:02:04,812 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:02:04,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 02:02:05,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:02:05,013 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:02:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:02:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1807457588, now seen corresponding path program 20 times [2022-11-23 02:02:05,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:02:05,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880690470] [2022-11-23 02:02:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:02:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:02:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-23 02:02:06,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:02:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880690470] [2022-11-23 02:02:06,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880690470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:02:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559164420] [2022-11-23 02:02:06,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:02:06,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:02:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:02:06,627 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:02:06,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 02:02:09,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:02:09,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:02:09,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-23 02:02:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:02:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2022-11-23 02:02:09,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:02:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1010 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-23 02:02:43,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559164420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:02:43,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:02:43,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 45] total 50 [2022-11-23 02:02:43,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390404420] [2022-11-23 02:02:43,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:02:43,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-23 02:02:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:02:43,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-23 02:02:43,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1803, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 02:02:43,117 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 50 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 50 states have internal predecessors, (97), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (62), 21 states have call predecessors, (62), 24 states have call successors, (62) [2022-11-23 02:02:43,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:02:43,566 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2022-11-23 02:02:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 02:02:43,566 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 50 states have internal predecessors, (97), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (62), 21 states have call predecessors, (62), 24 states have call successors, (62) Word has length 130 [2022-11-23 02:02:43,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:02:43,568 INFO L225 Difference]: With dead ends: 79 [2022-11-23 02:02:43,568 INFO L226 Difference]: Without dead ends: 75 [2022-11-23 02:02:43,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 255 SyntacticMatches, 21 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1635, Invalid=3335, Unknown=0, NotChecked=0, Total=4970 [2022-11-23 02:02:43,570 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 708 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:02:43,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 166 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:02:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-23 02:02:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-11-23 02:02:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-23 02:02:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2022-11-23 02:02:43,575 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 130 [2022-11-23 02:02:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:02:43,576 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2022-11-23 02:02:43,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 50 states have internal predecessors, (97), 24 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (62), 21 states have call predecessors, (62), 24 states have call successors, (62) [2022-11-23 02:02:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2022-11-23 02:02:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-23 02:02:43,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:02:43,578 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:02:43,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-23 02:02:43,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:02:43,793 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:02:43,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:02:43,794 INFO L85 PathProgramCache]: Analyzing trace with hash 874439510, now seen corresponding path program 21 times [2022-11-23 02:02:43,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:02:43,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886293359] [2022-11-23 02:02:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:02:43,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:02:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:02:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-23 02:02:45,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:02:45,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886293359] [2022-11-23 02:02:45,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886293359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:02:45,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119004465] [2022-11-23 02:02:45,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 02:02:45,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:02:45,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:02:45,757 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:02:45,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 02:02:48,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-11-23 02:02:48,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:02:48,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-23 02:02:48,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:02:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-23 02:02:48,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:03:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-23 02:03:28,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119004465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:03:28,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:03:28,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 52 [2022-11-23 02:03:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865496481] [2022-11-23 02:03:28,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:03:28,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-23 02:03:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:03:28,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-23 02:03:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 02:03:28,307 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 52 states, 50 states have (on average 2.02) internal successors, (101), 52 states have internal predecessors, (101), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (65), 22 states have call predecessors, (65), 25 states have call successors, (65) [2022-11-23 02:03:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:03:28,685 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2022-11-23 02:03:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 02:03:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.02) internal successors, (101), 52 states have internal predecessors, (101), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (65), 22 states have call predecessors, (65), 25 states have call successors, (65) Word has length 136 [2022-11-23 02:03:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:03:28,689 INFO L225 Difference]: With dead ends: 82 [2022-11-23 02:03:28,689 INFO L226 Difference]: Without dead ends: 78 [2022-11-23 02:03:28,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 267 SyntacticMatches, 22 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2302 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1778, Invalid=3624, Unknown=0, NotChecked=0, Total=5402 [2022-11-23 02:03:28,691 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 369 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:03:28,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 179 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:03:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-23 02:03:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-23 02:03:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (24), 23 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 02:03:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2022-11-23 02:03:28,696 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 136 [2022-11-23 02:03:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:03:28,696 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2022-11-23 02:03:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.02) internal successors, (101), 52 states have internal predecessors, (101), 25 states have call successors, (25), 1 states have call predecessors, (25), 23 states have return successors, (65), 22 states have call predecessors, (65), 25 states have call successors, (65) [2022-11-23 02:03:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2022-11-23 02:03:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-23 02:03:28,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:03:28,698 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:03:28,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 02:03:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:03:28,915 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:03:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:03:28,915 INFO L85 PathProgramCache]: Analyzing trace with hash 849241484, now seen corresponding path program 22 times [2022-11-23 02:03:28,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:03:28,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996740316] [2022-11-23 02:03:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:03:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:03:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:03:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:03:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-11-23 02:03:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:03:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996740316] [2022-11-23 02:03:30,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996740316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:03:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102965747] [2022-11-23 02:03:30,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 02:03:30,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:03:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:03:30,836 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:03:30,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 02:03:34,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 02:03:34,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:03:34,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 02:03:34,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:03:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-11-23 02:03:34,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:04:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-23 02:04:20,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102965747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:04:20,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:04:20,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 49] total 54 [2022-11-23 02:04:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175655998] [2022-11-23 02:04:20,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:04:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-23 02:04:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:04:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-23 02:04:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=2109, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 02:04:20,226 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 54 states, 52 states have (on average 2.019230769230769) internal successors, (105), 54 states have internal predecessors, (105), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (68), 23 states have call predecessors, (68), 26 states have call successors, (68) [2022-11-23 02:04:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:04:20,731 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2022-11-23 02:04:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 02:04:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 2.019230769230769) internal successors, (105), 54 states have internal predecessors, (105), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (68), 23 states have call predecessors, (68), 26 states have call successors, (68) Word has length 142 [2022-11-23 02:04:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:04:20,734 INFO L225 Difference]: With dead ends: 85 [2022-11-23 02:04:20,734 INFO L226 Difference]: Without dead ends: 81 [2022-11-23 02:04:20,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 279 SyntacticMatches, 23 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2510 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1927, Invalid=3925, Unknown=0, NotChecked=0, Total=5852 [2022-11-23 02:04:20,736 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 904 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:04:20,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 185 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:04:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-23 02:04:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-23 02:04:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-23 02:04:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2022-11-23 02:04:20,750 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 142 [2022-11-23 02:04:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:04:20,752 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2022-11-23 02:04:20,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 2.019230769230769) internal successors, (105), 54 states have internal predecessors, (105), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (68), 23 states have call predecessors, (68), 26 states have call successors, (68) [2022-11-23 02:04:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2022-11-23 02:04:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-23 02:04:20,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:04:20,757 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:04:20,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 02:04:20,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:04:20,971 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:04:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:04:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1665808022, now seen corresponding path program 23 times [2022-11-23 02:04:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:04:20,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630160336] [2022-11-23 02:04:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:04:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:04:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:04:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:04:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-11-23 02:04:23,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:04:23,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630160336] [2022-11-23 02:04:23,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630160336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:04:23,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142204876] [2022-11-23 02:04:23,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 02:04:23,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:04:23,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:04:23,150 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:04:23,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 02:04:27,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-11-23 02:04:27,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:04:27,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 02:04:27,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:04:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-23 02:04:27,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:05:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-23 02:05:20,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142204876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:05:20,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:05:20,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 56 [2022-11-23 02:05:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729002046] [2022-11-23 02:05:20,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:05:20,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-23 02:05:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:05:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-23 02:05:20,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 02:05:20,681 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 56 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 56 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (71), 24 states have call predecessors, (71), 27 states have call successors, (71) [2022-11-23 02:05:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:05:21,187 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2022-11-23 02:05:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 02:05:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 56 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (71), 24 states have call predecessors, (71), 27 states have call successors, (71) Word has length 148 [2022-11-23 02:05:21,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:05:21,188 INFO L225 Difference]: With dead ends: 88 [2022-11-23 02:05:21,189 INFO L226 Difference]: Without dead ends: 84 [2022-11-23 02:05:21,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 291 SyntacticMatches, 24 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2082, Invalid=4238, Unknown=0, NotChecked=0, Total=6320 [2022-11-23 02:05:21,191 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 545 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:05:21,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 203 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:05:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-23 02:05:21,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-23 02:05:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 57 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-23 02:05:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-11-23 02:05:21,196 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 148 [2022-11-23 02:05:21,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:05:21,196 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-11-23 02:05:21,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 2.0185185185185186) internal successors, (109), 56 states have internal predecessors, (109), 27 states have call successors, (27), 1 states have call predecessors, (27), 25 states have return successors, (71), 24 states have call predecessors, (71), 27 states have call successors, (71) [2022-11-23 02:05:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-11-23 02:05:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 02:05:21,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:05:21,198 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:05:21,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-23 02:05:21,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-23 02:05:21,407 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:05:21,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:05:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1715345484, now seen corresponding path program 24 times [2022-11-23 02:05:21,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:05:21,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130827413] [2022-11-23 02:05:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:05:21,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:05:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:05:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:05:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2022-11-23 02:05:23,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:05:23,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130827413] [2022-11-23 02:05:23,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130827413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:05:23,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233786850] [2022-11-23 02:05:23,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 02:05:23,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:05:23,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:05:23,807 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:05:23,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 02:05:28,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-11-23 02:05:28,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:05:28,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-23 02:05:28,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:05:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2022-11-23 02:05:28,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:06:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-23 02:06:29,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233786850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:06:29,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:06:29,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 53] total 57 [2022-11-23 02:06:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117891702] [2022-11-23 02:06:29,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:06:29,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 02:06:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:06:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 02:06:29,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=2328, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 02:06:29,701 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 57 states, 56 states have (on average 2.0) internal successors, (112), 57 states have internal predecessors, (112), 27 states have call successors, (27), 1 states have call predecessors, (27), 26 states have return successors, (73), 25 states have call predecessors, (73), 27 states have call successors, (73) [2022-11-23 02:06:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:06:30,197 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2022-11-23 02:06:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 02:06:30,198 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.0) internal successors, (112), 57 states have internal predecessors, (112), 27 states have call successors, (27), 1 states have call predecessors, (27), 26 states have return successors, (73), 25 states have call predecessors, (73), 27 states have call successors, (73) Word has length 154 [2022-11-23 02:06:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:06:30,199 INFO L225 Difference]: With dead ends: 91 [2022-11-23 02:06:30,199 INFO L226 Difference]: Without dead ends: 87 [2022-11-23 02:06:30,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 303 SyntacticMatches, 26 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2240, Invalid=4402, Unknown=0, NotChecked=0, Total=6642 [2022-11-23 02:06:30,201 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 364 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:06:30,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 196 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:06:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-23 02:06:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-23 02:06:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 02:06:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-11-23 02:06:30,214 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 154 [2022-11-23 02:06:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:06:30,215 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-11-23 02:06:30,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.0) internal successors, (112), 57 states have internal predecessors, (112), 27 states have call successors, (27), 1 states have call predecessors, (27), 26 states have return successors, (73), 25 states have call predecessors, (73), 27 states have call successors, (73) [2022-11-23 02:06:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-11-23 02:06:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 02:06:30,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:06:30,217 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:06:30,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 02:06:30,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 02:06:30,435 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:06:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:06:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash -678635050, now seen corresponding path program 25 times [2022-11-23 02:06:30,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:06:30,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694916302] [2022-11-23 02:06:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:06:30,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:06:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 25 proven. 950 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2022-11-23 02:06:35,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:06:35,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694916302] [2022-11-23 02:06:35,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694916302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:06:35,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658202175] [2022-11-23 02:06:35,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 02:06:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:06:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:06:35,464 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:06:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 02:06:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:41,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-23 02:06:41,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:06:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2022-11-23 02:06:41,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:06:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2022-11-23 02:06:45,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658202175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:06:45,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:06:45,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 57 [2022-11-23 02:06:45,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293293324] [2022-11-23 02:06:45,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:06:45,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 02:06:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:06:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 02:06:45,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=3080, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 02:06:45,197 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 31 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 26 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-23 02:06:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:06:48,283 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2022-11-23 02:06:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-23 02:06:48,283 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 31 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 26 states have call predecessors, (27), 1 states have call successors, (27) Word has length 160 [2022-11-23 02:06:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:06:48,286 INFO L225 Difference]: With dead ends: 94 [2022-11-23 02:06:48,286 INFO L226 Difference]: Without dead ends: 90 [2022-11-23 02:06:48,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 365 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=317, Invalid=11239, Unknown=0, NotChecked=0, Total=11556 [2022-11-23 02:06:48,289 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 55 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 2979 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 02:06:48,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1704 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2979 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 02:06:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-23 02:06:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-11-23 02:06:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 61 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (28), 27 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-23 02:06:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2022-11-23 02:06:48,295 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 160 [2022-11-23 02:06:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:06:48,296 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2022-11-23 02:06:48,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.087719298245614) internal successors, (62), 31 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 26 states have call predecessors, (27), 1 states have call successors, (27) [2022-11-23 02:06:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2022-11-23 02:06:48,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-23 02:06:48,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:06:48,297 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:06:48,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 02:06:48,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 02:06:48,511 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:06:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:06:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1845527796, now seen corresponding path program 26 times [2022-11-23 02:06:48,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:06:48,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909597930] [2022-11-23 02:06:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:06:48,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:06:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 02:06:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:06:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 975 proven. 78 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2022-11-23 02:06:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:06:52,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909597930] [2022-11-23 02:06:52,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909597930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:06:52,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131460737] [2022-11-23 02:06:52,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:06:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:06:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:06:52,363 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:06:52,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 02:06:57,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 02:06:57,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:06:57,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-23 02:06:57,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:06:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2022-11-23 02:06:58,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:06:58,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131460737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:06:58,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:06:58,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [32] total 34 [2022-11-23 02:06:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319986784] [2022-11-23 02:06:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:06:58,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 02:06:58,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:06:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 02:06:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=702, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 02:06:58,203 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 02:06:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:06:58,902 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2022-11-23 02:06:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 02:06:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) Word has length 166 [2022-11-23 02:06:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:06:58,903 INFO L225 Difference]: With dead ends: 90 [2022-11-23 02:06:58,903 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 02:06:58,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1230, Invalid=2430, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 02:06:58,904 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 4 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:06:58,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 246 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:06:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 02:06:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 02:06:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:06:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 02:06:58,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 166 [2022-11-23 02:06:58,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:06:58,906 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 02:06:58,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 31 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 27 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-23 02:06:58,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 02:06:58,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 02:06:58,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 02:06:58,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-23 02:06:59,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:06:59,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 02:06:59,124 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 02:06:59,125 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 02:06:59,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 02:06:59,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 02:06:59,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-11-23 02:06:59,125 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-11-23 02:06:59,125 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2022-11-23 02:06:59,126 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (<= 25 |ULTIMATE.start_main_~input~0#1|) (<= |ULTIMATE.start_main_~input~0#1| 25)) [2022-11-23 02:06:59,126 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-23 02:06:59,126 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 17) no Hoare annotation was computed. [2022-11-23 02:06:59,126 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-11-23 02:06:59,126 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-11-23 02:06:59,126 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2022-11-23 02:06:59,126 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2022-11-23 02:06:59,126 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-23 02:06:59,126 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-11-23 02:06:59,129 INFO L444 BasicCegarLoop]: Path program histogram: [26, 1] [2022-11-23 02:06:59,131 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 02:06:59,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:06:59 BoogieIcfgContainer [2022-11-23 02:06:59,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 02:06:59,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 02:06:59,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 02:06:59,135 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 02:06:59,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:45" (3/4) ... [2022-11-23 02:06:59,138 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 02:06:59,145 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-11-23 02:06:59,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-23 02:06:59,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 02:06:59,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 02:06:59,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 02:06:59,182 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 02:06:59,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 02:06:59,182 INFO L158 Benchmark]: Toolchain (without parser) took 494508.56ms. Allocated memory was 161.5MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 120.4MB in the beginning and 949.5MB in the end (delta: -829.0MB). Peak memory consumption was 549.2MB. Max. memory is 16.1GB. [2022-11-23 02:06:59,183 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 62.0MB in the beginning and 61.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:06:59,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.05ms. Allocated memory is still 161.5MB. Free memory was 120.4MB in the beginning and 110.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 02:06:59,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.34ms. Allocated memory is still 161.5MB. Free memory was 110.4MB in the beginning and 109.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:06:59,184 INFO L158 Benchmark]: Boogie Preprocessor took 26.49ms. Allocated memory is still 161.5MB. Free memory was 109.0MB in the beginning and 107.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:06:59,184 INFO L158 Benchmark]: RCFGBuilder took 248.48ms. Allocated memory is still 161.5MB. Free memory was 107.9MB in the beginning and 99.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 02:06:59,184 INFO L158 Benchmark]: TraceAbstraction took 493868.15ms. Allocated memory was 161.5MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 98.5MB in the beginning and 952.6MB in the end (delta: -854.1MB). Peak memory consumption was 521.9MB. Max. memory is 16.1GB. [2022-11-23 02:06:59,185 INFO L158 Benchmark]: Witness Printer took 47.37ms. Allocated memory is still 1.5GB. Free memory was 951.6MB in the beginning and 949.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 02:06:59,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 62.0MB in the beginning and 61.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.05ms. Allocated memory is still 161.5MB. Free memory was 120.4MB in the beginning and 110.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.34ms. Allocated memory is still 161.5MB. Free memory was 110.4MB in the beginning and 109.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.49ms. Allocated memory is still 161.5MB. Free memory was 109.0MB in the beginning and 107.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.48ms. Allocated memory is still 161.5MB. Free memory was 107.9MB in the beginning and 99.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 493868.15ms. Allocated memory was 161.5MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 98.5MB in the beginning and 952.6MB in the end (delta: -854.1MB). Peak memory consumption was 521.9MB. Max. memory is 16.1GB. * Witness Printer took 47.37ms. Allocated memory is still 1.5GB. Free memory was 951.6MB in the beginning and 949.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 493.8s, OverallIterations: 27, TraceHistogramMax: 27, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.1s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5547 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5144 mSDsluCounter, 4872 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4528 mSDsCounter, 2231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4997 IncrementalHoareTripleChecker+Invalid, 7228 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2231 mSolverCounterUnsat, 344 mSDtfsCounter, 4997 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6159 GetRequests, 4545 SyntacticMatches, 330 SemanticMatches, 1284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28016 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=26, InterpolantAutomatonStates: 512, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 438.1s InterpolantComputationTime, 4742 NumberOfCodeBlocks, 4742 NumberOfCodeBlocksAsserted, 226 NumberOfCheckSat, 6864 ConstructedInterpolants, 0 QuantifiedInterpolants, 21000 SizeOfPredicates, 352 NumberOfNonLiveVariables, 6110 ConjunctsInSsa, 859 ConjunctsInUnsatCore, 78 InterpolantComputations, 2 PerfectInterpolantSequences, 24180/54808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 02:06:59,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf490d9c-db6f-4686-acac-fe4869cc08fe/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE