./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/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_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/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_ba38d846-02d5-49a8-a2ce-b8a904cf379f/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 f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- 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 01:41:34,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:41:34,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:41:34,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:41:34,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:41:34,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:41:34,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:41:34,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:41:34,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:41:34,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:41:34,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:41:34,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:41:34,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:41:34,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:41:34,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:41:34,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:41:34,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:41:34,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:41:34,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:41:34,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:41:34,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:41:34,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:41:34,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:41:34,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:41:34,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:41:34,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:41:34,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:41:34,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:41:34,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:41:34,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:41:34,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:41:34,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:41:34,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:41:34,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:41:34,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:41:34,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:41:34,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:41:34,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:41:34,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:41:34,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:41:34,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:41:34,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:41:34,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:41:34,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:41:34,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:41:34,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:41:34,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:41:34,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:41:34,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:41:34,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:41:34,181 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:41:34,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:41:34,182 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:41:34,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:41:34,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:41:34,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:41:34,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:41:34,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:41:34,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:41:34,184 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:41:34,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:41:34,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:41:34,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:41:34,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:41:34,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:41:34,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:41:34,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:41:34,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:41:34,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:41:34,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:41:34,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:41:34,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:41:34,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:41:34,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:41:34,188 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:41:34,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:41:34,188 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_ba38d846-02d5-49a8-a2ce-b8a904cf379f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-11-23 01:41:34,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:41:34,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:41:34,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:41:34,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:41:34,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:41:34,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-23 01:41:37,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:41:37,673 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:41:37,673 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-23 01:41:37,680 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/data/e2e378ff4/65e109b14e8246208b71716b2ce9cee6/FLAGa8b4dd535 [2022-11-23 01:41:37,695 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/data/e2e378ff4/65e109b14e8246208b71716b2ce9cee6 [2022-11-23 01:41:37,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:41:37,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:41:37,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:41:37,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:41:37,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:41:37,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:37" (1/1) ... [2022-11-23 01:41:37,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7369b3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:37, skipping insertion in model container [2022-11-23 01:41:37,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:37" (1/1) ... [2022-11-23 01:41:37,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:41:37,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:41:37,915 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_ba38d846-02d5-49a8-a2ce-b8a904cf379f/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-23 01:41:37,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:41:37,971 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:41:37,983 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_ba38d846-02d5-49a8-a2ce-b8a904cf379f/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-23 01:41:38,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:41:38,027 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:41:38,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38 WrapperNode [2022-11-23 01:41:38,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:41:38,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:41:38,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:41:38,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:41:38,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,097 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2022-11-23 01:41:38,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:41:38,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:41:38,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:41:38,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:41:38,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:41:38,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:41:38,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:41:38,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:41:38,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (1/1) ... [2022-11-23 01:41:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:41:38,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:38,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:41:38,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:41:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:41:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:41:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-23 01:41:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-23 01:41:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:41:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:41:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 01:41:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 01:41:38,351 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:41:38,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:41:38,688 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:41:38,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:41:38,696 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 01:41:38,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:38 BoogieIcfgContainer [2022-11-23 01:41:38,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:41:38,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:41:38,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:41:38,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:41:38,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:41:37" (1/3) ... [2022-11-23 01:41:38,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73310170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:38, skipping insertion in model container [2022-11-23 01:41:38,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:38" (2/3) ... [2022-11-23 01:41:38,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73310170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:38, skipping insertion in model container [2022-11-23 01:41:38,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:38" (3/3) ... [2022-11-23 01:41:38,721 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-11-23 01:41:38,756 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:41:38,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:41:38,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:41:38,836 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;@61fb34c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:41:38,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:41:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 66 states have (on average 1.606060606060606) internal successors, (106), 68 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-23 01:41:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 01:41:38,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:38,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:38,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash -793971860, now seen corresponding path program 1 times [2022-11-23 01:41:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:38,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546892802] [2022-11-23 01:41:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:39,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546892802] [2022-11-23 01:41:39,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546892802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:39,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:41:39,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:41:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966029793] [2022-11-23 01:41:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:39,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:41:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:41:39,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:41:39,247 INFO L87 Difference]: Start difference. First operand has 75 states, 66 states have (on average 1.606060606060606) internal successors, (106), 68 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:39,299 INFO L93 Difference]: Finished difference Result 181 states and 286 transitions. [2022-11-23 01:41:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:41:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-11-23 01:41:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:39,317 INFO L225 Difference]: With dead ends: 181 [2022-11-23 01:41:39,317 INFO L226 Difference]: Without dead ends: 69 [2022-11-23 01:41:39,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:41:39,328 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:39,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-23 01:41:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-23 01:41:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 62 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 01:41:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2022-11-23 01:41:39,373 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 42 [2022-11-23 01:41:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:39,375 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2022-11-23 01:41:39,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2022-11-23 01:41:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 01:41:39,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:39,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:39,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:41:39,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1001939418, now seen corresponding path program 1 times [2022-11-23 01:41:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:39,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293414226] [2022-11-23 01:41:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:39,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:39,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293414226] [2022-11-23 01:41:39,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293414226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:39,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:41:39,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:41:39,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464664407] [2022-11-23 01:41:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:39,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:41:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:41:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:41:39,553 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:39,589 INFO L93 Difference]: Finished difference Result 108 states and 158 transitions. [2022-11-23 01:41:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:41:39,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-23 01:41:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:39,591 INFO L225 Difference]: With dead ends: 108 [2022-11-23 01:41:39,592 INFO L226 Difference]: Without dead ends: 69 [2022-11-23 01:41:39,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:41:39,594 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 88 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:39,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-23 01:41:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-23 01:41:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-23 01:41:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 100 transitions. [2022-11-23 01:41:39,603 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 100 transitions. Word has length 44 [2022-11-23 01:41:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:39,604 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 100 transitions. [2022-11-23 01:41:39,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2022-11-23 01:41:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 01:41:39,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:39,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:39,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:41:39,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1588745432, now seen corresponding path program 1 times [2022-11-23 01:41:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:39,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764513126] [2022-11-23 01:41:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:39,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764513126] [2022-11-23 01:41:39,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764513126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:39,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255965981] [2022-11-23 01:41:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:39,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:39,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:39,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:39,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:41:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:39,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 01:41:39,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 01:41:40,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:40,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255965981] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:40,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 01:41:40,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 9] total 15 [2022-11-23 01:41:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936455051] [2022-11-23 01:41:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:40,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:41:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:41:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:41:40,391 INFO L87 Difference]: Start difference. First operand 69 states and 100 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:40,547 INFO L93 Difference]: Finished difference Result 115 states and 167 transitions. [2022-11-23 01:41:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:41:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-23 01:41:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:40,559 INFO L225 Difference]: With dead ends: 115 [2022-11-23 01:41:40,559 INFO L226 Difference]: Without dead ends: 110 [2022-11-23 01:41:40,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:41:40,562 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 101 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:40,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 542 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:41:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-23 01:41:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2022-11-23 01:41:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 99 states have (on average 1.4646464646464648) internal successors, (145), 99 states have internal predecessors, (145), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 01:41:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 158 transitions. [2022-11-23 01:41:40,592 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 158 transitions. Word has length 44 [2022-11-23 01:41:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 158 transitions. [2022-11-23 01:41:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 158 transitions. [2022-11-23 01:41:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 01:41:40,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:40,595 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:40,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:40,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:40,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:40,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1249479986, now seen corresponding path program 1 times [2022-11-23 01:41:40,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784884960] [2022-11-23 01:41:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:40,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:41,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784884960] [2022-11-23 01:41:41,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784884960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:41,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027168811] [2022-11-23 01:41:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:41,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:41,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:41,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:41:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 01:41:41,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:41,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:41,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027168811] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:41,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 01:41:41,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2022-11-23 01:41:41,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931876487] [2022-11-23 01:41:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:41:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:41:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:41:41,296 INFO L87 Difference]: Start difference. First operand 107 states and 158 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:41,368 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2022-11-23 01:41:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:41:41,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-11-23 01:41:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:41,372 INFO L225 Difference]: With dead ends: 124 [2022-11-23 01:41:41,372 INFO L226 Difference]: Without dead ends: 118 [2022-11-23 01:41:41,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:41:41,380 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 16 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:41,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 377 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-23 01:41:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2022-11-23 01:41:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 108 states have (on average 1.4351851851851851) internal successors, (155), 108 states have internal predecessors, (155), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 01:41:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2022-11-23 01:41:41,394 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 168 transitions. Word has length 46 [2022-11-23 01:41:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:41,394 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 168 transitions. [2022-11-23 01:41:41,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 168 transitions. [2022-11-23 01:41:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-23 01:41:41,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:41,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:41,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:41,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:41,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:41,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1192221684, now seen corresponding path program 1 times [2022-11-23 01:41:41,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:41,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032889051] [2022-11-23 01:41:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:41,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:41,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032889051] [2022-11-23 01:41:41,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032889051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:41,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:41:41,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:41:41,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268422995] [2022-11-23 01:41:41,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:41,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:41:41,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:41:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:41:41,761 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:41,797 INFO L93 Difference]: Finished difference Result 122 states and 173 transitions. [2022-11-23 01:41:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:41:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2022-11-23 01:41:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:41,799 INFO L225 Difference]: With dead ends: 122 [2022-11-23 01:41:41,799 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 01:41:41,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:41:41,800 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 2 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:41,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 01:41:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-23 01:41:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 103 states have (on average 1.4174757281553398) internal successors, (146), 103 states have internal predecessors, (146), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 01:41:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2022-11-23 01:41:41,824 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 46 [2022-11-23 01:41:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2022-11-23 01:41:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2022-11-23 01:41:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 01:41:41,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:41,826 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:41,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:41:41,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1146571609, now seen corresponding path program 1 times [2022-11-23 01:41:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:41,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181701914] [2022-11-23 01:41:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:41,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:41,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181701914] [2022-11-23 01:41:41,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181701914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:41,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692248865] [2022-11-23 01:41:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:41,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:41,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:41,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:41:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:42,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 01:41:42,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:42,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:42,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692248865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:42,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:42,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2022-11-23 01:41:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912230726] [2022-11-23 01:41:42,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:42,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:41:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:41:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:41:42,303 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-23 01:41:42,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:42,815 INFO L93 Difference]: Finished difference Result 426 states and 644 transitions. [2022-11-23 01:41:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 01:41:42,816 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 48 [2022-11-23 01:41:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:42,818 INFO L225 Difference]: With dead ends: 426 [2022-11-23 01:41:42,819 INFO L226 Difference]: Without dead ends: 311 [2022-11-23 01:41:42,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2022-11-23 01:41:42,820 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 314 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:42,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 699 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 01:41:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-23 01:41:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 140. [2022-11-23 01:41:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 127 states have internal predecessors, (177), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2022-11-23 01:41:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 208 transitions. [2022-11-23 01:41:42,838 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 208 transitions. Word has length 48 [2022-11-23 01:41:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:42,838 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 208 transitions. [2022-11-23 01:41:42,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-23 01:41:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 208 transitions. [2022-11-23 01:41:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 01:41:42,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:42,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:42,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 01:41:43,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:43,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash -348261834, now seen corresponding path program 1 times [2022-11-23 01:41:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:43,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390007942] [2022-11-23 01:41:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 01:41:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:41:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 01:41:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 01:41:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:43,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390007942] [2022-11-23 01:41:43,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390007942] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:43,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181467348] [2022-11-23 01:41:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:43,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:43,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:43,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:41:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:41:43,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 01:41:43,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:41:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181467348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:43,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:41:43,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 01:41:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136513] [2022-11-23 01:41:43,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:43,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:41:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:41:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:41:43,263 INFO L87 Difference]: Start difference. First operand 140 states and 208 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 01:41:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:43,321 INFO L93 Difference]: Finished difference Result 277 states and 411 transitions. [2022-11-23 01:41:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:41:43,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-11-23 01:41:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:43,324 INFO L225 Difference]: With dead ends: 277 [2022-11-23 01:41:43,324 INFO L226 Difference]: Without dead ends: 155 [2022-11-23 01:41:43,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:41:43,328 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 20 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:43,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 247 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-23 01:41:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 146. [2022-11-23 01:41:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 131 states have (on average 1.4045801526717556) internal successors, (184), 133 states have internal predecessors, (184), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2022-11-23 01:41:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2022-11-23 01:41:43,354 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 55 [2022-11-23 01:41:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:43,354 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2022-11-23 01:41:43,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 01:41:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2022-11-23 01:41:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 01:41:43,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:43,356 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:43,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:43,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:43,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1206174656, now seen corresponding path program 1 times [2022-11-23 01:41:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:43,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565322098] [2022-11-23 01:41:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 01:41:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-23 01:41:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565322098] [2022-11-23 01:41:43,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565322098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174950883] [2022-11-23 01:41:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:43,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:43,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:43,651 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:43,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 01:41:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:43,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 01:41:43,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:41:43,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:41:43,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174950883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:43,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:41:43,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-23 01:41:43,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573769321] [2022-11-23 01:41:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:43,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:41:43,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:43,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:41:43,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:41:43,768 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 01:41:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:43,855 INFO L93 Difference]: Finished difference Result 303 states and 458 transitions. [2022-11-23 01:41:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:41:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-11-23 01:41:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:43,859 INFO L225 Difference]: With dead ends: 303 [2022-11-23 01:41:43,860 INFO L226 Difference]: Without dead ends: 166 [2022-11-23 01:41:43,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:41:43,862 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 20 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:43,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 252 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:41:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-23 01:41:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2022-11-23 01:41:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.3972602739726028) internal successors, (204), 150 states have internal predecessors, (204), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-23 01:41:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2022-11-23 01:41:43,889 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 58 [2022-11-23 01:41:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:43,890 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2022-11-23 01:41:43,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 01:41:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2022-11-23 01:41:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 01:41:43,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:43,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:43,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:44,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 01:41:44,098 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1532583322, now seen corresponding path program 1 times [2022-11-23 01:41:44,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:44,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9803046] [2022-11-23 01:41:44,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:44,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-23 01:41:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 01:41:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:44,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:44,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9803046] [2022-11-23 01:41:44,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9803046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446787676] [2022-11-23 01:41:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:44,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:44,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:44,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 01:41:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 01:41:44,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 01:41:44,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:44,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446787676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:44,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:44,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-23 01:41:44,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201999367] [2022-11-23 01:41:44,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:44,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 01:41:44,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:44,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 01:41:44,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:41:44,471 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:41:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:44,651 INFO L93 Difference]: Finished difference Result 419 states and 656 transitions. [2022-11-23 01:41:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 01:41:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2022-11-23 01:41:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:44,655 INFO L225 Difference]: With dead ends: 419 [2022-11-23 01:41:44,655 INFO L226 Difference]: Without dead ends: 265 [2022-11-23 01:41:44,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:41:44,658 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 180 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:44,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 401 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:41:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-23 01:41:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 191. [2022-11-23 01:41:44,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.4252873563218391) internal successors, (248), 178 states have internal predecessors, (248), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-23 01:41:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 288 transitions. [2022-11-23 01:41:44,684 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 288 transitions. Word has length 61 [2022-11-23 01:41:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:44,684 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 288 transitions. [2022-11-23 01:41:44,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-23 01:41:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 288 transitions. [2022-11-23 01:41:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 01:41:44,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:44,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:44,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:44,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:44,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash -973321366, now seen corresponding path program 1 times [2022-11-23 01:41:44,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:44,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738402140] [2022-11-23 01:41:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:44,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:41:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:45,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:45,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738402140] [2022-11-23 01:41:45,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738402140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:45,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475123491] [2022-11-23 01:41:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:45,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:45,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:45,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:45,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 01:41:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 01:41:45,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:45,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:45,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475123491] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:45,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 01:41:45,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-23 01:41:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452435447] [2022-11-23 01:41:45,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:41:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:41:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:41:45,261 INFO L87 Difference]: Start difference. First operand 191 states and 288 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:45,291 INFO L93 Difference]: Finished difference Result 247 states and 363 transitions. [2022-11-23 01:41:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:41:45,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2022-11-23 01:41:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:45,294 INFO L225 Difference]: With dead ends: 247 [2022-11-23 01:41:45,294 INFO L226 Difference]: Without dead ends: 196 [2022-11-23 01:41:45,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:41:45,295 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 41 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:45,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-23 01:41:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2022-11-23 01:41:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.4137931034482758) internal successors, (246), 178 states have internal predecessors, (246), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-23 01:41:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 286 transitions. [2022-11-23 01:41:45,313 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 286 transitions. Word has length 63 [2022-11-23 01:41:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:45,314 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 286 transitions. [2022-11-23 01:41:45,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 286 transitions. [2022-11-23 01:41:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 01:41:45,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:45,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:45,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:45,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash 16165131, now seen corresponding path program 1 times [2022-11-23 01:41:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:45,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107017627] [2022-11-23 01:41:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-23 01:41:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:41:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 01:41:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 01:41:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:45,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107017627] [2022-11-23 01:41:45,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107017627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:45,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068482189] [2022-11-23 01:41:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:45,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:45,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:45,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 01:41:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:45,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 01:41:45,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 01:41:45,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 01:41:46,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068482189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:46,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:46,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 12] total 25 [2022-11-23 01:41:46,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864520939] [2022-11-23 01:41:46,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:46,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 01:41:46,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:46,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 01:41:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2022-11-23 01:41:46,369 INFO L87 Difference]: Start difference. First operand 191 states and 286 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 21 states have internal predecessors, (74), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-23 01:41:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:47,247 INFO L93 Difference]: Finished difference Result 341 states and 501 transitions. [2022-11-23 01:41:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 01:41:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 21 states have internal predecessors, (74), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 63 [2022-11-23 01:41:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:47,249 INFO L225 Difference]: With dead ends: 341 [2022-11-23 01:41:47,249 INFO L226 Difference]: Without dead ends: 148 [2022-11-23 01:41:47,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 01:41:47,251 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 148 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:47,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1146 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 01:41:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-23 01:41:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2022-11-23 01:41:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 95 states have internal predecessors, (133), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 01:41:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2022-11-23 01:41:47,265 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 63 [2022-11-23 01:41:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:47,265 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2022-11-23 01:41:47,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 21 states have internal predecessors, (74), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-23 01:41:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2022-11-23 01:41:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 01:41:47,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:47,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:47,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:47,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 01:41:47,470 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash -848130451, now seen corresponding path program 1 times [2022-11-23 01:41:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:47,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709227191] [2022-11-23 01:41:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:47,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:47,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:41:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:47,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709227191] [2022-11-23 01:41:47,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709227191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:47,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020906817] [2022-11-23 01:41:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:47,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:47,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:47,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:47,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 01:41:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:47,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 01:41:47,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:47,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:47,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020906817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:47,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:47,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-23 01:41:47,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464546366] [2022-11-23 01:41:47,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:47,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 01:41:47,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 01:41:47,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:41:47,948 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 01:41:48,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:48,106 INFO L93 Difference]: Finished difference Result 214 states and 301 transitions. [2022-11-23 01:41:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:41:48,107 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2022-11-23 01:41:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:48,108 INFO L225 Difference]: With dead ends: 214 [2022-11-23 01:41:48,108 INFO L226 Difference]: Without dead ends: 178 [2022-11-23 01:41:48,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-11-23 01:41:48,110 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 215 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:48,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1213 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:41:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-23 01:41:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 120. [2022-11-23 01:41:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 109 states have internal predecessors, (146), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-23 01:41:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 171 transitions. [2022-11-23 01:41:48,126 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 171 transitions. Word has length 64 [2022-11-23 01:41:48,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:48,127 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 171 transitions. [2022-11-23 01:41:48,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 17 states have internal predecessors, (81), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-23 01:41:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 171 transitions. [2022-11-23 01:41:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 01:41:48,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:48,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:48,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:48,334 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash -629275733, now seen corresponding path program 1 times [2022-11-23 01:41:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:48,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151679961] [2022-11-23 01:41:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:41:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:48,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:48,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151679961] [2022-11-23 01:41:48,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151679961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:48,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:41:48,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:41:48,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402825361] [2022-11-23 01:41:48,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:48,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:41:48,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:41:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:41:48,491 INFO L87 Difference]: Start difference. First operand 120 states and 171 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:48,561 INFO L93 Difference]: Finished difference Result 171 states and 235 transitions. [2022-11-23 01:41:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:41:48,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2022-11-23 01:41:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:48,563 INFO L225 Difference]: With dead ends: 171 [2022-11-23 01:41:48,563 INFO L226 Difference]: Without dead ends: 120 [2022-11-23 01:41:48,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:41:48,564 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 4 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:48,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 524 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-23 01:41:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-23 01:41:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 109 states have internal predecessors, (146), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-23 01:41:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2022-11-23 01:41:48,577 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 64 [2022-11-23 01:41:48,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:48,577 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2022-11-23 01:41:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2022-11-23 01:41:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:41:48,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:48,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:48,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 01:41:48,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:48,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1085833987, now seen corresponding path program 1 times [2022-11-23 01:41:48,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:48,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029494223] [2022-11-23 01:41:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:48,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:41:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 01:41:48,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:48,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029494223] [2022-11-23 01:41:48,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029494223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:48,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:41:48,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:41:48,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154813112] [2022-11-23 01:41:48,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:48,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:41:48,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:48,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:41:48,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:41:48,782 INFO L87 Difference]: Start difference. First operand 120 states and 165 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:48,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:48,915 INFO L93 Difference]: Finished difference Result 233 states and 318 transitions. [2022-11-23 01:41:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 01:41:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2022-11-23 01:41:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:48,917 INFO L225 Difference]: With dead ends: 233 [2022-11-23 01:41:48,917 INFO L226 Difference]: Without dead ends: 206 [2022-11-23 01:41:48,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:41:48,918 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 126 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:48,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 629 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:41:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-23 01:41:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 151. [2022-11-23 01:41:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 138 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (20), 8 states have call predecessors, (20), 5 states have call successors, (20) [2022-11-23 01:41:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 205 transitions. [2022-11-23 01:41:48,936 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 205 transitions. Word has length 71 [2022-11-23 01:41:48,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:48,937 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 205 transitions. [2022-11-23 01:41:48,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 205 transitions. [2022-11-23 01:41:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:41:48,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:48,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:48,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 01:41:48,939 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1929269631, now seen corresponding path program 1 times [2022-11-23 01:41:48,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:48,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690965651] [2022-11-23 01:41:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:48,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 01:41:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 01:41:49,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:49,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690965651] [2022-11-23 01:41:49,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690965651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:49,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575991138] [2022-11-23 01:41:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:49,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:49,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:49,069 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:49,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 01:41:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 01:41:49,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 01:41:49,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-23 01:41:49,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575991138] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:49,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 01:41:49,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2022-11-23 01:41:49,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633793320] [2022-11-23 01:41:49,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:49,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:41:49,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:49,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:41:49,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:41:49,326 INFO L87 Difference]: Start difference. First operand 151 states and 205 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:49,355 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2022-11-23 01:41:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:41:49,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2022-11-23 01:41:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:49,357 INFO L225 Difference]: With dead ends: 191 [2022-11-23 01:41:49,357 INFO L226 Difference]: Without dead ends: 131 [2022-11-23 01:41:49,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:41:49,359 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 43 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:49,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 186 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-23 01:41:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2022-11-23 01:41:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 120 states have internal predecessors, (154), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 01:41:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2022-11-23 01:41:49,378 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 71 [2022-11-23 01:41:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:49,379 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2022-11-23 01:41:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:49,379 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2022-11-23 01:41:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 01:41:49,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:49,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:49,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 01:41:49,586 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1245795635, now seen corresponding path program 1 times [2022-11-23 01:41:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:49,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050472243] [2022-11-23 01:41:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 01:41:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-23 01:41:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:49,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050472243] [2022-11-23 01:41:49,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050472243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:41:49,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:41:49,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:41:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954379858] [2022-11-23 01:41:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:41:49,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:41:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:41:49,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:41:49,788 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:49,823 INFO L93 Difference]: Finished difference Result 169 states and 222 transitions. [2022-11-23 01:41:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:41:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-11-23 01:41:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:49,825 INFO L225 Difference]: With dead ends: 169 [2022-11-23 01:41:49,825 INFO L226 Difference]: Without dead ends: 136 [2022-11-23 01:41:49,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:41:49,826 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 2 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:49,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 258 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:41:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-23 01:41:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2022-11-23 01:41:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 124 states have internal predecessors, (158), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 01:41:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2022-11-23 01:41:49,841 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 76 [2022-11-23 01:41:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:49,841 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2022-11-23 01:41:49,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 01:41:49,842 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2022-11-23 01:41:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 01:41:49,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:49,843 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:49,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 01:41:49,843 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash 428147185, now seen corresponding path program 1 times [2022-11-23 01:41:49,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:49,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317531642] [2022-11-23 01:41:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 01:41:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:49,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317531642] [2022-11-23 01:41:49,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317531642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:49,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9217451] [2022-11-23 01:41:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:49,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:49,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:50,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:50,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 01:41:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 01:41:50,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:50,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:50,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9217451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:50,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:50,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-11-23 01:41:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954323969] [2022-11-23 01:41:50,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:41:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:41:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:41:50,282 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 01:41:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:50,402 INFO L93 Difference]: Finished difference Result 262 states and 345 transitions. [2022-11-23 01:41:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 01:41:50,403 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2022-11-23 01:41:50,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:50,404 INFO L225 Difference]: With dead ends: 262 [2022-11-23 01:41:50,404 INFO L226 Difference]: Without dead ends: 223 [2022-11-23 01:41:50,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:41:50,405 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 291 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:50,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1095 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:41:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-23 01:41:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 154. [2022-11-23 01:41:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 140 states have (on average 1.2785714285714285) internal successors, (179), 141 states have internal predecessors, (179), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-23 01:41:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 202 transitions. [2022-11-23 01:41:50,421 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 202 transitions. Word has length 76 [2022-11-23 01:41:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:50,422 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 202 transitions. [2022-11-23 01:41:50,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 01:41:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 202 transitions. [2022-11-23 01:41:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 01:41:50,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:50,425 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:50,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:50,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 01:41:50,631 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -851716493, now seen corresponding path program 1 times [2022-11-23 01:41:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:50,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344128323] [2022-11-23 01:41:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:41:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-23 01:41:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:50,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:50,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344128323] [2022-11-23 01:41:50,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344128323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:50,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115005994] [2022-11-23 01:41:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:50,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:50,800 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:50,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 01:41:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:50,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 01:41:50,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:50,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:51,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115005994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:51,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:51,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 12] total 21 [2022-11-23 01:41:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507344146] [2022-11-23 01:41:51,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:51,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 01:41:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 01:41:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:41:51,283 INFO L87 Difference]: Start difference. First operand 154 states and 202 transitions. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 01:41:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:51,835 INFO L93 Difference]: Finished difference Result 356 states and 473 transitions. [2022-11-23 01:41:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:41:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 76 [2022-11-23 01:41:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:51,837 INFO L225 Difference]: With dead ends: 356 [2022-11-23 01:41:51,838 INFO L226 Difference]: Without dead ends: 211 [2022-11-23 01:41:51,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-11-23 01:41:51,839 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 231 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:51,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 920 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 01:41:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-23 01:41:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 154. [2022-11-23 01:41:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 140 states have (on average 1.2642857142857142) internal successors, (177), 141 states have internal predecessors, (177), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-23 01:41:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2022-11-23 01:41:51,857 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 76 [2022-11-23 01:41:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:51,857 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2022-11-23 01:41:51,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 01:41:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2022-11-23 01:41:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 01:41:51,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:41:51,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:41:51,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-23 01:41:52,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 01:41:52,066 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:41:52,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:41:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash -141123505, now seen corresponding path program 1 times [2022-11-23 01:41:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:41:52,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794508406] [2022-11-23 01:41:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:52,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:41:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 01:41:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:41:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-23 01:41:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 01:41:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 01:41:52,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:41:52,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794508406] [2022-11-23 01:41:52,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794508406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:41:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427450374] [2022-11-23 01:41:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:41:52,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:52,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:41:52,261 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:41:52,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 01:41:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:41:52,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 01:41:52,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:41:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 01:41:52,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:41:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-23 01:41:52,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427450374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:41:52,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:41:52,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 18 [2022-11-23 01:41:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714587882] [2022-11-23 01:41:52,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:41:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 01:41:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:41:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 01:41:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-23 01:41:52,725 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-23 01:41:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:41:53,380 INFO L93 Difference]: Finished difference Result 270 states and 358 transitions. [2022-11-23 01:41:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 01:41:53,381 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 79 [2022-11-23 01:41:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:41:53,381 INFO L225 Difference]: With dead ends: 270 [2022-11-23 01:41:53,381 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 01:41:53,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2022-11-23 01:41:53,383 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 210 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:41:53,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 182 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 01:41:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 01:41:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 01:41:53,384 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 01:41:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 01:41:53,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2022-11-23 01:41:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:41:53,384 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 01:41:53,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 16 states have internal predecessors, (89), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-23 01:41:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 01:41:53,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 01:41:53,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 01:41:53,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 01:41:53,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:41:53,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 01:42:02,310 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-11-23 01:42:02,310 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2022-11-23 01:42:02,310 INFO L895 garLoopResultBuilder]: At program point L73(lines 28 81) the Hoare annotation is: (let ((.cse3 (not (= |base2flt_#in~m| 0)))) (let ((.cse0 (or (not (= |base2flt_#in~m| |base2flt_#in~e|)) (not (= |base2flt_#in~e| 0)))) (.cse1 (or (< (mod base2flt_~__retres4~0 4294967296) 1) .cse3)) (.cse2 (or .cse3 (< (mod |base2flt_#res| 4294967296) 1)))) (or (and (<= base2flt_~e |base2flt_#in~e|) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (not (= |base2flt_#in~m| 1)))))) [2022-11-23 01:42:02,310 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2022-11-23 01:42:02,310 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~m| 0)))) (and (or (not (= |base2flt_#in~m| |base2flt_#in~e|)) (not (= |base2flt_#in~e| 0))) (<= |base2flt_#in~e| base2flt_~e) (or (< (mod base2flt_~__retres4~0 4294967296) 1) .cse0) (or .cse0 (< (mod |base2flt_#res| 4294967296) 1)) (not (= |base2flt_#in~m| 1)))) [2022-11-23 01:42:02,311 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-23 01:42:02,311 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-23 01:42:02,311 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-23 01:42:02,311 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (let ((.cse0 (<= base2flt_~e |base2flt_#in~e|)) (.cse1 (or (not (= |base2flt_#in~m| |base2flt_#in~e|)) (not (= |base2flt_#in~e| 0)))) (.cse2 (or (not (= |base2flt_#in~m| 0)) (< (mod |base2flt_#res| 4294967296) 1)))) (or (and .cse0 (= base2flt_~m |base2flt_#in~m|) (<= |base2flt_#in~e| base2flt_~e) (= base2flt_~__retres4~0 0)) (and .cse0 .cse1 .cse2) (and .cse1 .cse2 (not (= |base2flt_#in~m| 1))))) [2022-11-23 01:42:02,311 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-23 01:42:02,311 INFO L899 garLoopResultBuilder]: For program point base2fltFINAL(lines 24 82) no Hoare annotation was computed. [2022-11-23 01:42:02,312 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-23 01:42:02,312 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-23 01:42:02,312 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-23 01:42:02,312 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~m| 0)))) (and (<= base2flt_~e |base2flt_#in~e|) (or (not (= |base2flt_#in~m| |base2flt_#in~e|)) (not (= |base2flt_#in~e| 0))) (or (< (mod base2flt_~__retres4~0 4294967296) 1) .cse0) (or .cse0 (< (mod |base2flt_#res| 4294967296) 1)))) [2022-11-23 01:42:02,312 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2022-11-23 01:42:02,312 INFO L899 garLoopResultBuilder]: For program point L76-3(line 76) no Hoare annotation was computed. [2022-11-23 01:42:02,312 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-23 01:42:02,313 INFO L895 garLoopResultBuilder]: At program point L217(lines 147 219) the Hoare annotation is: (or (and (< (mod |ULTIMATE.start_mulflt_#res#1| 4294967296) 1) (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 1)) (and (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (<= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0)) [2022-11-23 01:42:02,313 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2022-11-23 01:42:02,313 INFO L899 garLoopResultBuilder]: For program point L176-2(line 176) no Hoare annotation was computed. [2022-11-23 01:42:02,313 INFO L899 garLoopResultBuilder]: For program point L176-4(line 176) no Hoare annotation was computed. [2022-11-23 01:42:02,313 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 01:42:02,313 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 01:42:02,313 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 252) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L243-2(lines 243 252) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 264) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L260-2(lines 260 264) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-23 01:42:02,314 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L171-2(line 171) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L171-4(line 171) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 250) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L213(line 213) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L246-2(lines 246 250) no Hoare annotation was computed. [2022-11-23 01:42:02,315 INFO L899 garLoopResultBuilder]: For program point L213-2(line 213) no Hoare annotation was computed. [2022-11-23 01:42:02,316 INFO L899 garLoopResultBuilder]: For program point L213-4(line 213) no Hoare annotation was computed. [2022-11-23 01:42:02,316 INFO L902 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: true [2022-11-23 01:42:02,316 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-23 01:42:02,316 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 01:42:02,316 INFO L899 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2022-11-23 01:42:02,316 INFO L899 garLoopResultBuilder]: For program point L214-2(line 214) no Hoare annotation was computed. [2022-11-23 01:42:02,316 INFO L899 garLoopResultBuilder]: For program point L214-4(line 214) no Hoare annotation was computed. [2022-11-23 01:42:02,317 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2022-11-23 01:42:02,317 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-23 01:42:02,317 INFO L899 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2022-11-23 01:42:02,317 INFO L899 garLoopResultBuilder]: For program point L173-2(line 173) no Hoare annotation was computed. [2022-11-23 01:42:02,317 INFO L899 garLoopResultBuilder]: For program point L173-4(line 173) no Hoare annotation was computed. [2022-11-23 01:42:02,317 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 01:42:02,317 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-23 01:42:02,318 INFO L899 garLoopResultBuilder]: For program point L256-1(lines 256 272) no Hoare annotation was computed. [2022-11-23 01:42:02,318 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2022-11-23 01:42:02,318 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-23 01:42:02,318 INFO L899 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2022-11-23 01:42:02,318 INFO L899 garLoopResultBuilder]: For program point L174-2(line 174) no Hoare annotation was computed. [2022-11-23 01:42:02,318 INFO L899 garLoopResultBuilder]: For program point L174-4(line 174) no Hoare annotation was computed. [2022-11-23 01:42:02,318 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 266) no Hoare annotation was computed. [2022-11-23 01:42:02,319 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (and (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (= 0 |ULTIMATE.start_main_~tmp___0~0#1|)) [2022-11-23 01:42:02,319 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 164) no Hoare annotation was computed. [2022-11-23 01:42:02,319 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-23 01:42:02,319 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 1)) (and (= |ULTIMATE.start_main_~sb~0#1| 1) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (<= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0)) [2022-11-23 01:42:02,319 INFO L902 garLoopResultBuilder]: At program point L274(lines 220 276) the Hoare annotation is: true [2022-11-23 01:42:02,319 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (or (= |ULTIMATE.start_main_~zero~0#1| 0) (and (= |ULTIMATE.start_main_~a~0#1| 0) (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1))) [2022-11-23 01:42:02,320 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-23 01:42:02,320 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-23 01:42:02,320 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-23 01:42:02,320 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-23 01:42:02,320 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-23 01:42:02,320 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-23 01:42:02,321 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-23 01:42:02,324 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:42:02,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 01:42:02,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:42:02 BoogieIcfgContainer [2022-11-23 01:42:02,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 01:42:02,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 01:42:02,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 01:42:02,354 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 01:42:02,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:38" (3/4) ... [2022-11-23 01:42:02,358 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 01:42:02,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-23 01:42:02,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 01:42:02,371 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-23 01:42:02,371 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-23 01:42:02,371 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 01:42:02,372 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 01:42:02,395 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((e <= unknown-#in~e-unknown && m == unknown-#in~m-unknown) && unknown-#in~e-unknown <= e) && __retres4 == 0) || ((e <= unknown-#in~e-unknown && (!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1))) || (((!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0)) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) && !(unknown-#in~m-unknown == 1)) [2022-11-23 01:42:02,395 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e <= unknown-#in~e-unknown && (!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0))) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1) [2022-11-23 01:42:02,395 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0)) && unknown-#in~e-unknown <= e) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) && !(unknown-#in~m-unknown == 1) [2022-11-23 01:42:02,395 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((e <= unknown-#in~e-unknown && (!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0))) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) || ((((!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0)) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) && !(unknown-#in~m-unknown == 1)) [2022-11-23 01:42:02,396 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\result % 4294967296 < 1 && zero % 4294967296 < 1) && __retres10 % 4294967296 < 1) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 [2022-11-23 01:42:02,417 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 01:42:02,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 01:42:02,418 INFO L158 Benchmark]: Toolchain (without parser) took 24719.20ms. Allocated memory was 190.8MB in the beginning and 482.3MB in the end (delta: 291.5MB). Free memory was 146.5MB in the beginning and 357.4MB in the end (delta: -210.9MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2022-11-23 01:42:02,418 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 138.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:42:02,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.25ms. Allocated memory is still 190.8MB. Free memory was 146.5MB in the beginning and 132.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 01:42:02,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.93ms. Allocated memory is still 190.8MB. Free memory was 132.9MB in the beginning and 131.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:42:02,419 INFO L158 Benchmark]: Boogie Preprocessor took 28.73ms. Allocated memory is still 190.8MB. Free memory was 131.0MB in the beginning and 129.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:42:02,420 INFO L158 Benchmark]: RCFGBuilder took 559.01ms. Allocated memory is still 190.8MB. Free memory was 129.5MB in the beginning and 109.2MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 01:42:02,420 INFO L158 Benchmark]: TraceAbstraction took 23651.84ms. Allocated memory was 190.8MB in the beginning and 482.3MB in the end (delta: 291.5MB). Free memory was 108.7MB in the beginning and 362.7MB in the end (delta: -254.0MB). Peak memory consumption was 247.0MB. Max. memory is 16.1GB. [2022-11-23 01:42:02,420 INFO L158 Benchmark]: Witness Printer took 63.25ms. Allocated memory is still 482.3MB. Free memory was 362.7MB in the beginning and 357.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 01:42:02,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 138.4MB. Free memory is still 81.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.25ms. Allocated memory is still 190.8MB. Free memory was 146.5MB in the beginning and 132.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.93ms. Allocated memory is still 190.8MB. Free memory was 132.9MB in the beginning and 131.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.73ms. Allocated memory is still 190.8MB. Free memory was 131.0MB in the beginning and 129.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 559.01ms. Allocated memory is still 190.8MB. Free memory was 129.5MB in the beginning and 109.2MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23651.84ms. Allocated memory was 190.8MB in the beginning and 482.3MB in the end (delta: 291.5MB). Free memory was 108.7MB in the beginning and 362.7MB in the end (delta: -254.0MB). Peak memory consumption was 247.0MB. Max. memory is 16.1GB. * Witness Printer took 63.25ms. Allocated memory is still 482.3MB. Free memory was 362.7MB in the beginning and 357.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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: 17]: 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 3 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.5s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2103 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2097 mSDsluCounter, 9805 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8135 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2561 IncrementalHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 1670 mSDtfsCounter, 2561 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1807 GetRequests, 1561 SyntacticMatches, 2 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=9, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 553 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 217 PreInvPairs, 672 NumberOfFragments, 282 HoareAnnotationTreeSize, 217 FomulaSimplifications, 26047 FormulaSimplificationTreeSizeReduction, 6.9s HoareSimplificationTime, 14 FomulaSimplificationsInter, 91319 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1951 NumberOfCodeBlocks, 1951 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2599 ConstructedInterpolants, 0 QuantifiedInterpolants, 4898 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2495 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 43 InterpolantComputations, 12 PerfectInterpolantSequences, 1177/1454 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 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((e <= unknown-#in~e-unknown && (!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0))) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) || ((((!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0)) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) && !(unknown-#in~m-unknown == 1)) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: ((zero % 4294967296 < 1 && __retres10 % 4294967296 < 1) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (((\result % 4294967296 < 1 && zero % 4294967296 < 1) && __retres10 % 4294967296 < 1) || (sb == 1 && tmp == 1)) || sb + 1 <= 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((e <= unknown-#in~e-unknown && m == unknown-#in~m-unknown) && unknown-#in~e-unknown <= e) && __retres4 == 0) || ((e <= unknown-#in~e-unknown && (!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1))) || (((!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0)) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) && !(unknown-#in~m-unknown == 1)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((e <= unknown-#in~e-unknown && (!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0))) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!(unknown-#in~m-unknown == unknown-#in~e-unknown) || !(unknown-#in~e-unknown == 0)) && unknown-#in~e-unknown <= e) && (__retres4 % 4294967296 < 1 || !(unknown-#in~m-unknown == 0))) && (!(unknown-#in~m-unknown == 0) || \result % 4294967296 < 1)) && !(unknown-#in~m-unknown == 1) RESULT: Ultimate proved your program to be correct! [2022-11-23 01:42:02,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba38d846-02d5-49a8-a2ce-b8a904cf379f/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE