./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/MultCommutative-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:16:10,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:16:10,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:16:10,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:16:10,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:16:10,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:16:10,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:16:10,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:16:10,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:16:10,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:16:10,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:16:10,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:16:10,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:16:10,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:16:10,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:16:10,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:16:10,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:16:10,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:16:10,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:16:10,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:16:10,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:16:10,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:16:10,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:16:10,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:16:10,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:16:10,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:16:10,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:16:10,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:16:10,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:16:10,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:16:10,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:16:10,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:16:10,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:16:10,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:16:10,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:16:10,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:16:10,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:16:10,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:16:10,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:16:10,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:16:10,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:16:10,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:16:10,229 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:16:10,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:16:10,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:16:10,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:16:10,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:16:10,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:16:10,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:16:10,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:16:10,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:16:10,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:16:10,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:16:10,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:16:10,233 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:16:10,233 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_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2022-12-13 18:16:10,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:16:10,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:16:10,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:16:10,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:16:10,445 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:16:10,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive/MultCommutative-2.c [2022-12-13 18:16:12,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:16:13,112 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:16:13,113 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/sv-benchmarks/c/recursive/MultCommutative-2.c [2022-12-13 18:16:13,117 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/data/7b2c5b974/486bda1f3f7c4b249a9b670c57d318d3/FLAG8a670daee [2022-12-13 18:16:13,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/data/7b2c5b974/486bda1f3f7c4b249a9b670c57d318d3 [2022-12-13 18:16:13,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:16:13,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:16:13,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:16:13,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:16:13,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:16:13,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84c83d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13, skipping insertion in model container [2022-12-13 18:16:13,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:16:13,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:16:13,283 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_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-12-13 18:16:13,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:16:13,296 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:16:13,311 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_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2022-12-13 18:16:13,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:16:13,325 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:16:13,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13 WrapperNode [2022-12-13 18:16:13,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:16:13,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:16:13,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:16:13,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:16:13,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,355 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-12-13 18:16:13,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:16:13,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:16:13,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:16:13,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:16:13,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:16:13,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:16:13,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:16:13,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:16:13,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (1/1) ... [2022-12-13 18:16:13,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:16:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:13,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:16:13,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:16:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:16:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-12-13 18:16:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-12-13 18:16:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:16:13,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:16:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:16:13,499 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:16:13,501 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:16:13,588 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:16:13,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:16:13,592 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:16:13,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:16:13 BoogieIcfgContainer [2022-12-13 18:16:13,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:16:13,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:16:13,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:16:13,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:16:13,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:16:13" (1/3) ... [2022-12-13 18:16:13,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7cf72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:16:13, skipping insertion in model container [2022-12-13 18:16:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:16:13" (2/3) ... [2022-12-13 18:16:13,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7cf72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:16:13, skipping insertion in model container [2022-12-13 18:16:13,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:16:13" (3/3) ... [2022-12-13 18:16:13,600 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2022-12-13 18:16:13,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:16:13,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:16:13,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:16:13,656 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;@165876f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:16:13,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:16:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 18:16:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 18:16:13,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:13,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:13,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1513944532, now seen corresponding path program 1 times [2022-12-13 18:16:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:13,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695044944] [2022-12-13 18:16:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:16:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:16:13,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:13,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695044944] [2022-12-13 18:16:13,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695044944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:13,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:13,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:16:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985889803] [2022-12-13 18:16:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:14,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:16:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:16:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:16:14,031 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:16:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:14,115 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2022-12-13 18:16:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:16:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-12-13 18:16:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:14,125 INFO L225 Difference]: With dead ends: 44 [2022-12-13 18:16:14,126 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 18:16:14,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:16:14,130 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:14,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:16:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 18:16:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-12-13 18:16:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-13 18:16:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-12-13 18:16:14,161 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 20 [2022-12-13 18:16:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:14,161 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-12-13 18:16:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:16:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-12-13 18:16:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 18:16:14,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:14,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:16:14,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash 555960324, now seen corresponding path program 1 times [2022-12-13 18:16:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:14,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773085370] [2022-12-13 18:16:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:14,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:16:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:16:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:16:14,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:14,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773085370] [2022-12-13 18:16:14,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773085370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:14,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589759095] [2022-12-13 18:16:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:14,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:14,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:14,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:16:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:14,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:16:14,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:16:14,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:16:14,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589759095] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:14,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:14,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2022-12-13 18:16:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689528828] [2022-12-13 18:16:14,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:16:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:16:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:16:14,567 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 18:16:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:14,714 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2022-12-13 18:16:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:16:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2022-12-13 18:16:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:14,716 INFO L225 Difference]: With dead ends: 52 [2022-12-13 18:16:14,716 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 18:16:14,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:16:14,718 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:14,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:16:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 18:16:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-12-13 18:16:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 18:16:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-12-13 18:16:14,724 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 26 [2022-12-13 18:16:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:14,724 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-12-13 18:16:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 18:16:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-12-13 18:16:14,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 18:16:14,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:14,725 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:14,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:16:14,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:14,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2011031750, now seen corresponding path program 1 times [2022-12-13 18:16:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:14,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65015299] [2022-12-13 18:16:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 18:16:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 18:16:15,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:15,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65015299] [2022-12-13 18:16:15,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65015299] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:16:15,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:16:15,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:16:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857933462] [2022-12-13 18:16:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:16:15,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:16:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:16:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:16:15,122 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:16:15,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:15,154 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-13 18:16:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:16:15,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-12-13 18:16:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:15,155 INFO L225 Difference]: With dead ends: 31 [2022-12-13 18:16:15,155 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 18:16:15,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:16:15,157 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:15,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:16:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 18:16:15,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-13 18:16:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 18:16:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-12-13 18:16:15,161 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 27 [2022-12-13 18:16:15,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:15,161 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-12-13 18:16:15,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 18:16:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-12-13 18:16:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 18:16:15,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:15,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:15,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:16:15,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -760266050, now seen corresponding path program 2 times [2022-12-13 18:16:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:15,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312079381] [2022-12-13 18:16:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:15,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 18:16:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:16:15,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312079381] [2022-12-13 18:16:15,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312079381] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602582838] [2022-12-13 18:16:15,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:16:15,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:15,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:15,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:16:15,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:16:15,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:15,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-13 18:16:15,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:16:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:16:16,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602582838] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:16,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:16,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 33 [2022-12-13 18:16:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11034449] [2022-12-13 18:16:16,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:16,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 18:16:16,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 18:16:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:16:16,453 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:16:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:16,974 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2022-12-13 18:16:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 18:16:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) Word has length 34 [2022-12-13 18:16:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:16,976 INFO L225 Difference]: With dead ends: 53 [2022-12-13 18:16:16,976 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 18:16:16,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=1759, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 18:16:16,979 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:16,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 177 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:16:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 18:16:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-12-13 18:16:16,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (21), 9 states have call predecessors, (21), 6 states have call successors, (21) [2022-12-13 18:16:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 53 transitions. [2022-12-13 18:16:16,986 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 53 transitions. Word has length 34 [2022-12-13 18:16:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:16,987 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 53 transitions. [2022-12-13 18:16:16,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 18:16:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 53 transitions. [2022-12-13 18:16:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 18:16:16,988 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:16,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:16,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 18:16:17,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:17,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:17,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash -757286924, now seen corresponding path program 1 times [2022-12-13 18:16:17,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:17,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560905028] [2022-12-13 18:16:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 18:16:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:16:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 18:16:17,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560905028] [2022-12-13 18:16:17,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560905028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200568597] [2022-12-13 18:16:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:17,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:17,298 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:17,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:16:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:16:17,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 18:16:17,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 18:16:17,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200568597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:17,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:17,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-12-13 18:16:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784782107] [2022-12-13 18:16:17,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:16:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:16:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:16:17,516 INFO L87 Difference]: Start difference. First operand 37 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-12-13 18:16:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:17,571 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2022-12-13 18:16:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:16:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 47 [2022-12-13 18:16:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:17,572 INFO L225 Difference]: With dead ends: 57 [2022-12-13 18:16:17,573 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 18:16:17,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:16:17,575 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:17,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:16:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 18:16:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-13 18:16:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 18:16:17,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-12-13 18:16:17,578 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 47 [2022-12-13 18:16:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:17,578 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-12-13 18:16:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-12-13 18:16:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-12-13 18:16:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 18:16:17,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:17,579 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:17,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:16:17,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:17,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:17,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1519724908, now seen corresponding path program 3 times [2022-12-13 18:16:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:17,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232939624] [2022-12-13 18:16:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 18:16:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 18:16:18,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:18,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232939624] [2022-12-13 18:16:18,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232939624] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:18,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837555169] [2022-12-13 18:16:18,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:16:18,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:18,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:18,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:16:18,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 18:16:18,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:18,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 73 conjunts are in the unsatisfiable core [2022-12-13 18:16:18,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 18:16:18,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 51 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:16:19,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837555169] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:19,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:19,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 36 [2022-12-13 18:16:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596666722] [2022-12-13 18:16:19,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 18:16:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 18:16:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 18:16:19,656 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:16:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:20,117 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-13 18:16:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:16:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) Word has length 48 [2022-12-13 18:16:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:20,118 INFO L225 Difference]: With dead ends: 36 [2022-12-13 18:16:20,118 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 18:16:20,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=2076, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 18:16:20,120 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:20,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 177 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:16:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 18:16:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-13 18:16:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:16:20,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-13 18:16:20,123 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 48 [2022-12-13 18:16:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:20,123 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-13 18:16:20,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2022-12-13 18:16:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-13 18:16:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:16:20,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:20,125 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:20,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:16:20,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:20,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash -826569506, now seen corresponding path program 4 times [2022-12-13 18:16:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084972935] [2022-12-13 18:16:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:16:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 82 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 18:16:20,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:20,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084972935] [2022-12-13 18:16:20,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084972935] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:20,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965965886] [2022-12-13 18:16:20,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:16:20,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:20,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:20,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:20,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:16:21,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:16:21,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:21,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-13 18:16:21,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-13 18:16:21,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:16:22,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965965886] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:22,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:22,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 21] total 42 [2022-12-13 18:16:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032126445] [2022-12-13 18:16:22,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:22,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 18:16:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 18:16:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 18:16:22,760 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 18:16:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:23,227 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-12-13 18:16:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 18:16:23,228 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) Word has length 62 [2022-12-13 18:16:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:23,228 INFO L225 Difference]: With dead ends: 39 [2022-12-13 18:16:23,228 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 18:16:23,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 115 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 18:16:23,229 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:23,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 218 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:16:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 18:16:23,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 18:16:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 18:16:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-12-13 18:16:23,232 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 62 [2022-12-13 18:16:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:23,232 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-12-13 18:16:23,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 18:16:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-12-13 18:16:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 18:16:23,233 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:23,233 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:23,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:16:23,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:23,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash -529248084, now seen corresponding path program 5 times [2022-12-13 18:16:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:23,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006015701] [2022-12-13 18:16:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:23,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:16:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 134 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 18:16:24,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:24,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006015701] [2022-12-13 18:16:24,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006015701] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:24,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731188224] [2022-12-13 18:16:24,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:16:24,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:24,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:24,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:24,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:16:24,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 18:16:24,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:24,347 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 121 conjunts are in the unsatisfiable core [2022-12-13 18:16:24,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 132 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 18:16:24,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 197 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 18:16:26,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731188224] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:26,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:26,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 48 [2022-12-13 18:16:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681914087] [2022-12-13 18:16:26,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:26,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 18:16:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 18:16:26,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 18:16:26,636 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2022-12-13 18:16:27,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:27,415 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-12-13 18:16:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 18:16:27,416 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) Word has length 76 [2022-12-13 18:16:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:27,417 INFO L225 Difference]: With dead ends: 42 [2022-12-13 18:16:27,417 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 18:16:27,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 143 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=412, Invalid=3748, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 18:16:27,420 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:27,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 302 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:16:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 18:16:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-12-13 18:16:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:16:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-12-13 18:16:27,425 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 76 [2022-12-13 18:16:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:27,425 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-12-13 18:16:27,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2022-12-13 18:16:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-12-13 18:16:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:16:27,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:27,427 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:27,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:16:27,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:27,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:27,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -495284482, now seen corresponding path program 6 times [2022-12-13 18:16:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725968714] [2022-12-13 18:16:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:16:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 34 proven. 198 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-12-13 18:16:28,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:28,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725968714] [2022-12-13 18:16:28,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725968714] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:28,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325302429] [2022-12-13 18:16:28,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:16:28,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:28,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:28,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:28,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:16:28,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-12-13 18:16:28,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:28,826 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 144 conjunts are in the unsatisfiable core [2022-12-13 18:16:28,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 22 proven. 200 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-12-13 18:16:29,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 309 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 18:16:32,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325302429] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:32,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:32,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 31] total 59 [2022-12-13 18:16:32,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317623804] [2022-12-13 18:16:32,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:32,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-13 18:16:32,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-13 18:16:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3187, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 18:16:32,170 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) [2022-12-13 18:16:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:33,016 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-12-13 18:16:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 18:16:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) Word has length 90 [2022-12-13 18:16:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:33,017 INFO L225 Difference]: With dead ends: 45 [2022-12-13 18:16:33,017 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 18:16:33,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 158 SyntacticMatches, 19 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=573, Invalid=5433, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 18:16:33,020 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:33,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 264 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:16:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 18:16:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-13 18:16:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 18:16:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-12-13 18:16:33,024 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 90 [2022-12-13 18:16:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:33,024 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-12-13 18:16:33,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) [2022-12-13 18:16:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-12-13 18:16:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:16:33,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:33,025 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:33,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:16:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:33,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1413185516, now seen corresponding path program 7 times [2022-12-13 18:16:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:33,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72560496] [2022-12-13 18:16:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:33,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:33,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:16:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 42 proven. 274 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-12-13 18:16:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:34,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72560496] [2022-12-13 18:16:34,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72560496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:34,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114732209] [2022-12-13 18:16:34,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:16:34,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:34,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:34,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:34,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:16:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:34,613 WARN L261 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 169 conjunts are in the unsatisfiable core [2022-12-13 18:16:34,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 6 proven. 270 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-12-13 18:16:35,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 23 proven. 439 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-13 18:16:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114732209] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:37,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:37,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 30] total 60 [2022-12-13 18:16:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256756660] [2022-12-13 18:16:37,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-13 18:16:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-13 18:16:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 18:16:37,881 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2022-12-13 18:16:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:38,740 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-12-13 18:16:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 18:16:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 104 [2022-12-13 18:16:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:38,741 INFO L225 Difference]: With dead ends: 48 [2022-12-13 18:16:38,742 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 18:16:38,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 199 SyntacticMatches, 13 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=564, Invalid=5916, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 18:16:38,744 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 101 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:38,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 262 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:16:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 18:16:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-13 18:16:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:16:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2022-12-13 18:16:38,749 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 104 [2022-12-13 18:16:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:38,749 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2022-12-13 18:16:38,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2022-12-13 18:16:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2022-12-13 18:16:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 18:16:38,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:38,751 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:38,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:16:38,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:16:38,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1686718750, now seen corresponding path program 8 times [2022-12-13 18:16:38,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:38,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692751407] [2022-12-13 18:16:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:16:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 50 proven. 362 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-12-13 18:16:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692751407] [2022-12-13 18:16:40,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692751407] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379182958] [2022-12-13 18:16:40,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:16:40,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:40,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:40,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:16:40,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:16:40,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:40,420 WARN L261 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 193 conjunts are in the unsatisfiable core [2022-12-13 18:16:40,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 7 proven. 357 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-12-13 18:16:41,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 26 proven. 596 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-12-13 18:16:44,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379182958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:44,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:44,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 33] total 66 [2022-12-13 18:16:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029692264] [2022-12-13 18:16:44,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:44,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-12-13 18:16:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-12-13 18:16:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4042, Unknown=0, NotChecked=0, Total=4290 [2022-12-13 18:16:44,530 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2022-12-13 18:16:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:45,458 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-12-13 18:16:45,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 18:16:45,459 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 118 [2022-12-13 18:16:45,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:45,460 INFO L225 Difference]: With dead ends: 51 [2022-12-13 18:16:45,460 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 18:16:45,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 227 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2117 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=646, Invalid=7186, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 18:16:45,462 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:45,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 392 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:16:45,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 18:16:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-13 18:16:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 9 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 18:16:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-12-13 18:16:45,465 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 118 [2022-12-13 18:16:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:45,465 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-12-13 18:16:45,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2022-12-13 18:16:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-12-13 18:16:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 18:16:45,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:45,466 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:45,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:16:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:16:45,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:45,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash 80066348, now seen corresponding path program 9 times [2022-12-13 18:16:45,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:45,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699279788] [2022-12-13 18:16:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:45,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:16:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 58 proven. 462 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-12-13 18:16:47,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:47,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699279788] [2022-12-13 18:16:47,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699279788] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:47,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36434414] [2022-12-13 18:16:47,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:16:47,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:47,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:47,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:47,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:16:47,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-12-13 18:16:47,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:47,548 WARN L261 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 217 conjunts are in the unsatisfiable core [2022-12-13 18:16:47,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 8 proven. 456 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2022-12-13 18:16:48,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:16:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 29 proven. 777 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-12-13 18:16:52,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36434414] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:16:52,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:16:52,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 36] total 72 [2022-12-13 18:16:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745599658] [2022-12-13 18:16:52,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:16:52,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 18:16:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:16:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 18:16:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4840, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 18:16:52,723 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2022-12-13 18:16:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:16:53,834 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-12-13 18:16:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 18:16:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) Word has length 132 [2022-12-13 18:16:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:16:53,835 INFO L225 Difference]: With dead ends: 54 [2022-12-13 18:16:53,835 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 18:16:53,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 255 SyntacticMatches, 17 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=732, Invalid=8580, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 18:16:53,837 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:16:53,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 326 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:16:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 18:16:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-13 18:16:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 10 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:16:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2022-12-13 18:16:53,840 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 132 [2022-12-13 18:16:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:16:53,840 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2022-12-13 18:16:53,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2022-12-13 18:16:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2022-12-13 18:16:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 18:16:53,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:16:53,841 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:16:53,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:16:54,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:16:54,042 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:16:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:16:54,042 INFO L85 PathProgramCache]: Analyzing trace with hash 293911358, now seen corresponding path program 10 times [2022-12-13 18:16:54,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:16:54,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762841346] [2022-12-13 18:16:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:16:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:16:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:16:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:16:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:16:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:16:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 66 proven. 574 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2022-12-13 18:16:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:16:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762841346] [2022-12-13 18:16:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762841346] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:16:56,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342174236] [2022-12-13 18:16:56,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:16:56,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:16:56,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:16:56,073 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:16:56,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:16:56,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:16:56,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:16:56,167 WARN L261 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 241 conjunts are in the unsatisfiable core [2022-12-13 18:16:56,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:16:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 9 proven. 567 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2022-12-13 18:16:57,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 32 proven. 982 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-12-13 18:17:02,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342174236] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:02,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:17:02,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 39] total 78 [2022-12-13 18:17:02,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720007563] [2022-12-13 18:17:02,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:02,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-13 18:17:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-13 18:17:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=5710, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 18:17:02,393 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2022-12-13 18:17:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:17:03,745 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-12-13 18:17:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 18:17:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) Word has length 146 [2022-12-13 18:17:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:17:03,746 INFO L225 Difference]: With dead ends: 57 [2022-12-13 18:17:03,746 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 18:17:03,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 283 SyntacticMatches, 19 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=822, Invalid=10098, Unknown=0, NotChecked=0, Total=10920 [2022-12-13 18:17:03,747 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 114 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:17:03,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 604 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:17:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 18:17:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-13 18:17:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 18:17:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2022-12-13 18:17:03,750 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 146 [2022-12-13 18:17:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:17:03,750 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2022-12-13 18:17:03,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2022-12-13 18:17:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2022-12-13 18:17:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 18:17:03,752 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:17:03,752 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:03,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:17:03,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:17:03,952 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:17:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1024592276, now seen corresponding path program 11 times [2022-12-13 18:17:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:03,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312206366] [2022-12-13 18:17:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:17:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:04,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 18:17:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 74 proven. 698 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-12-13 18:17:06,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312206366] [2022-12-13 18:17:06,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312206366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:17:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455150379] [2022-12-13 18:17:06,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:17:06,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:17:06,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:17:06,661 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:17:06,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:17:06,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2022-12-13 18:17:06,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:17:06,794 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 265 conjunts are in the unsatisfiable core [2022-12-13 18:17:06,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:17:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 10 proven. 690 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2022-12-13 18:17:08,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:14,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 35 proven. 1211 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-12-13 18:17:14,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455150379] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:14,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:17:14,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 42] total 84 [2022-12-13 18:17:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224185569] [2022-12-13 18:17:14,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-12-13 18:17:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-12-13 18:17:14,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=6652, Unknown=0, NotChecked=0, Total=6972 [2022-12-13 18:17:14,124 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2022-12-13 18:17:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:17:15,539 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2022-12-13 18:17:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 18:17:15,539 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) Word has length 160 [2022-12-13 18:17:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:17:15,540 INFO L225 Difference]: With dead ends: 60 [2022-12-13 18:17:15,540 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 18:17:15,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 311 SyntacticMatches, 21 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3535 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=916, Invalid=11740, Unknown=0, NotChecked=0, Total=12656 [2022-12-13 18:17:15,543 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:17:15,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 458 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:17:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 18:17:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-13 18:17:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 18:17:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2022-12-13 18:17:15,549 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 160 [2022-12-13 18:17:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:17:15,549 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2022-12-13 18:17:15,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2022-12-13 18:17:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2022-12-13 18:17:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 18:17:15,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:17:15,551 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:15,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:17:15,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:17:15,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:17:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1140202146, now seen corresponding path program 12 times [2022-12-13 18:17:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:15,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571724170] [2022-12-13 18:17:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:15,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:17:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:16,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 18:17:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 82 proven. 834 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-12-13 18:17:18,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:18,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571724170] [2022-12-13 18:17:18,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571724170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:17:18,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549357594] [2022-12-13 18:17:18,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:17:18,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:17:18,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:17:18,808 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:17:18,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:17:18,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-12-13 18:17:18,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:17:18,968 WARN L261 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 289 conjunts are in the unsatisfiable core [2022-12-13 18:17:18,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:17:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 11 proven. 825 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-12-13 18:17:20,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 38 proven. 1464 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-12-13 18:17:27,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549357594] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:27,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:17:27,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 45] total 90 [2022-12-13 18:17:27,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084631511] [2022-12-13 18:17:27,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:27,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-12-13 18:17:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-12-13 18:17:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=7666, Unknown=0, NotChecked=0, Total=8010 [2022-12-13 18:17:27,464 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2022-12-13 18:17:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:17:28,898 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-12-13 18:17:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 18:17:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) Word has length 174 [2022-12-13 18:17:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:17:28,898 INFO L225 Difference]: With dead ends: 63 [2022-12-13 18:17:28,898 INFO L226 Difference]: Without dead ends: 53 [2022-12-13 18:17:28,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 339 SyntacticMatches, 23 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4089 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1014, Invalid=13506, Unknown=0, NotChecked=0, Total=14520 [2022-12-13 18:17:28,900 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 292 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:17:28,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 526 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:17:28,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-13 18:17:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-12-13 18:17:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 13 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 18:17:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2022-12-13 18:17:28,903 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 174 [2022-12-13 18:17:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:17:28,903 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2022-12-13 18:17:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2022-12-13 18:17:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2022-12-13 18:17:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-12-13 18:17:28,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:17:28,904 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:28,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 18:17:29,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:17:29,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:17:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash 831471020, now seen corresponding path program 13 times [2022-12-13 18:17:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:29,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863479486] [2022-12-13 18:17:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:29,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:17:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:30,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:30,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:17:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 90 proven. 982 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2022-12-13 18:17:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:32,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863479486] [2022-12-13 18:17:32,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863479486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:17:32,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6344243] [2022-12-13 18:17:32,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:17:32,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:17:32,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:17:32,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:17:32,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 18:17:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:32,889 WARN L261 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 313 conjunts are in the unsatisfiable core [2022-12-13 18:17:32,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:17:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 12 proven. 972 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2022-12-13 18:17:34,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 41 proven. 1741 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-12-13 18:17:42,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6344243] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:42,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:17:42,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 96 [2022-12-13 18:17:42,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180492739] [2022-12-13 18:17:42,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:42,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-13 18:17:42,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:42,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-13 18:17:42,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=8752, Unknown=0, NotChecked=0, Total=9120 [2022-12-13 18:17:42,221 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2022-12-13 18:17:43,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:17:43,883 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-12-13 18:17:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 18:17:43,884 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) Word has length 188 [2022-12-13 18:17:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:17:43,884 INFO L225 Difference]: With dead ends: 66 [2022-12-13 18:17:43,884 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 18:17:43,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 367 SyntacticMatches, 25 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4681 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1116, Invalid=15396, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 18:17:43,886 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 91 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:17:43,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 602 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:17:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 18:17:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-13 18:17:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 18:17:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2022-12-13 18:17:43,889 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 188 [2022-12-13 18:17:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:17:43,889 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2022-12-13 18:17:43,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2022-12-13 18:17:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2022-12-13 18:17:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-13 18:17:43,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:17:43,890 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:17:43,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 18:17:44,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 18:17:44,091 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:17:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:17:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash -55195778, now seen corresponding path program 14 times [2022-12-13 18:17:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:17:44,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756324290] [2022-12-13 18:17:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:17:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:17:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:17:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:45,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 18:17:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:47,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:17:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:17:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 98 proven. 1142 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-12-13 18:17:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:17:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756324290] [2022-12-13 18:17:48,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756324290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:17:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247912994] [2022-12-13 18:17:48,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:17:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:17:48,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:17:48,512 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:17:48,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 18:17:48,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:17:48,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:17:48,658 WARN L261 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 337 conjunts are in the unsatisfiable core [2022-12-13 18:17:48,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:17:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 13 proven. 1131 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2022-12-13 18:17:50,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:17:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 44 proven. 2042 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 18:17:59,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247912994] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:17:59,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:17:59,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 51] total 102 [2022-12-13 18:17:59,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47733296] [2022-12-13 18:17:59,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:17:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-12-13 18:17:59,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:17:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-12-13 18:17:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=9910, Unknown=0, NotChecked=0, Total=10302 [2022-12-13 18:17:59,417 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) [2022-12-13 18:18:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:18:01,497 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2022-12-13 18:18:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 18:18:01,497 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) Word has length 202 [2022-12-13 18:18:01,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:18:01,498 INFO L225 Difference]: With dead ends: 69 [2022-12-13 18:18:01,498 INFO L226 Difference]: Without dead ends: 59 [2022-12-13 18:18:01,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 395 SyntacticMatches, 27 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5311 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1222, Invalid=17410, Unknown=0, NotChecked=0, Total=18632 [2022-12-13 18:18:01,501 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 336 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:18:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 975 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:18:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-13 18:18:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-13 18:18:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 15 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2022-12-13 18:18:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2022-12-13 18:18:01,507 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 202 [2022-12-13 18:18:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:18:01,507 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2022-12-13 18:18:01,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) [2022-12-13 18:18:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2022-12-13 18:18:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-12-13 18:18:01,509 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:18:01,509 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:01,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 18:18:01,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:18:01,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:18:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 361008364, now seen corresponding path program 15 times [2022-12-13 18:18:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:01,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606237880] [2022-12-13 18:18:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:18:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 18:18:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 106 proven. 1314 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2022-12-13 18:18:07,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:07,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606237880] [2022-12-13 18:18:07,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606237880] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:07,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441374896] [2022-12-13 18:18:07,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:18:07,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:07,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:07,140 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:07,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 18:18:07,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2022-12-13 18:18:07,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:07,385 WARN L261 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 361 conjunts are in the unsatisfiable core [2022-12-13 18:18:07,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 14 proven. 1302 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2022-12-13 18:18:09,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 47 proven. 2367 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2022-12-13 18:18:19,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441374896] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:19,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:19,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 54] total 108 [2022-12-13 18:18:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263830763] [2022-12-13 18:18:19,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:19,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-12-13 18:18:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-12-13 18:18:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=11140, Unknown=0, NotChecked=0, Total=11556 [2022-12-13 18:18:19,020 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) [2022-12-13 18:18:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:18:21,269 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2022-12-13 18:18:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 18:18:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) Word has length 216 [2022-12-13 18:18:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:18:21,270 INFO L225 Difference]: With dead ends: 72 [2022-12-13 18:18:21,270 INFO L226 Difference]: Without dead ends: 62 [2022-12-13 18:18:21,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 423 SyntacticMatches, 29 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5983 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1332, Invalid=19548, Unknown=0, NotChecked=0, Total=20880 [2022-12-13 18:18:21,272 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 549 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:18:21,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 923 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:18:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-13 18:18:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-12-13 18:18:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 16 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 18:18:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-12-13 18:18:21,275 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 216 [2022-12-13 18:18:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:18:21,276 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-12-13 18:18:21,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) [2022-12-13 18:18:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-12-13 18:18:21,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-12-13 18:18:21,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:18:21,277 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:21,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 18:18:21,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 18:18:21,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:18:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash -500866658, now seen corresponding path program 16 times [2022-12-13 18:18:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:21,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313246971] [2022-12-13 18:18:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:18:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 18:18:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:26,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 114 proven. 1498 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2022-12-13 18:18:27,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:27,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313246971] [2022-12-13 18:18:27,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313246971] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:27,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429049212] [2022-12-13 18:18:27,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:18:27,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:27,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:27,380 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 18:18:27,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:18:27,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:27,638 WARN L261 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 385 conjunts are in the unsatisfiable core [2022-12-13 18:18:27,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 15 proven. 1485 refuted. 0 times theorem prover too weak. 1850 trivial. 0 not checked. [2022-12-13 18:18:29,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:18:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 50 proven. 2716 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2022-12-13 18:18:40,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429049212] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:18:40,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:18:40,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 57] total 114 [2022-12-13 18:18:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326015121] [2022-12-13 18:18:40,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:18:40,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-12-13 18:18:40,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:18:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-12-13 18:18:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=12442, Unknown=0, NotChecked=0, Total=12882 [2022-12-13 18:18:40,857 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) [2022-12-13 18:18:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:18:42,762 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2022-12-13 18:18:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 18:18:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) Word has length 230 [2022-12-13 18:18:42,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:18:42,763 INFO L225 Difference]: With dead ends: 75 [2022-12-13 18:18:42,764 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 18:18:42,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 451 SyntacticMatches, 31 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6693 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1446, Invalid=21810, Unknown=0, NotChecked=0, Total=23256 [2022-12-13 18:18:42,766 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 321 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:18:42,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 877 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:18:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 18:18:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-12-13 18:18:42,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 18:18:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2022-12-13 18:18:42,769 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 230 [2022-12-13 18:18:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:18:42,769 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2022-12-13 18:18:42,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) [2022-12-13 18:18:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2022-12-13 18:18:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-12-13 18:18:42,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:18:42,770 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:18:42,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 18:18:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:42,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:18:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:18:42,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1515658196, now seen corresponding path program 17 times [2022-12-13 18:18:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:18:42,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071743738] [2022-12-13 18:18:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:18:42,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:18:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:18:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:44,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 18:18:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:18:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:18:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 122 proven. 1694 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2022-12-13 18:18:49,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:18:49,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071743738] [2022-12-13 18:18:49,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071743738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:18:49,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156660060] [2022-12-13 18:18:49,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:18:49,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:18:49,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:18:49,882 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:18:49,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 18:18:50,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2022-12-13 18:18:50,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:18:50,237 WARN L261 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 409 conjunts are in the unsatisfiable core [2022-12-13 18:18:50,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:18:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 16 proven. 1680 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2022-12-13 18:18:52,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 53 proven. 3089 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2022-12-13 18:19:04,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156660060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:04,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:04,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 60] total 120 [2022-12-13 18:19:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571047126] [2022-12-13 18:19:04,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:04,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-12-13 18:19:04,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-12-13 18:19:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=13816, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 18:19:04,594 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) [2022-12-13 18:19:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:19:07,589 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-12-13 18:19:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 18:19:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) Word has length 244 [2022-12-13 18:19:07,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:19:07,590 INFO L225 Difference]: With dead ends: 78 [2022-12-13 18:19:07,590 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 18:19:07,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 479 SyntacticMatches, 33 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7449 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1564, Invalid=24196, Unknown=0, NotChecked=0, Total=25760 [2022-12-13 18:19:07,592 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 327 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:19:07,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1382 Invalid, 3405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 18:19:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 18:19:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-12-13 18:19:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 18:19:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2022-12-13 18:19:07,595 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 244 [2022-12-13 18:19:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:19:07,595 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2022-12-13 18:19:07,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) [2022-12-13 18:19:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2022-12-13 18:19:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-12-13 18:19:07,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:19:07,596 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:19:07,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 18:19:07,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:07,798 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:19:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1594510402, now seen corresponding path program 18 times [2022-12-13 18:19:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:07,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179657796] [2022-12-13 18:19:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:07,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:19:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:11,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:11,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 18:19:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 130 proven. 1902 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2022-12-13 18:19:16,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:16,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179657796] [2022-12-13 18:19:16,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179657796] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:16,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411985374] [2022-12-13 18:19:16,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:19:16,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:16,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:16,007 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:16,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 18:19:16,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-12-13 18:19:16,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:19:16,355 WARN L261 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 432 conjunts are in the unsatisfiable core [2022-12-13 18:19:16,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 70 proven. 1904 refuted. 0 times theorem prover too weak. 2298 trivial. 0 not checked. [2022-12-13 18:19:18,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:19:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 59 proven. 3489 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2022-12-13 18:19:36,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411985374] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:19:36,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:19:36,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 48, 67] total 131 [2022-12-13 18:19:36,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610367679] [2022-12-13 18:19:36,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:19:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-12-13 18:19:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:19:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-12-13 18:19:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=16507, Unknown=0, NotChecked=0, Total=17030 [2022-12-13 18:19:36,220 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 131 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 74 states have internal predecessors, (177), 25 states have call successors, (25), 1 states have call predecessors, (25), 38 states have return successors, (60), 57 states have call predecessors, (60), 25 states have call successors, (60) [2022-12-13 18:19:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:19:39,005 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-12-13 18:19:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 18:19:39,005 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 74 states have internal predecessors, (177), 25 states have call successors, (25), 1 states have call predecessors, (25), 38 states have return successors, (60), 57 states have call predecessors, (60), 25 states have call successors, (60) Word has length 258 [2022-12-13 18:19:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:19:39,006 INFO L225 Difference]: With dead ends: 81 [2022-12-13 18:19:39,006 INFO L226 Difference]: Without dead ends: 71 [2022-12-13 18:19:39,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 482 SyntacticMatches, 55 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1869, Invalid=28233, Unknown=0, NotChecked=0, Total=30102 [2022-12-13 18:19:39,009 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 348 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 3190 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:19:39,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1581 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3190 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 18:19:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-13 18:19:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-13 18:19:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 18:19:39,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2022-12-13 18:19:39,013 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 258 [2022-12-13 18:19:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:19:39,014 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2022-12-13 18:19:39,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 74 states have internal predecessors, (177), 25 states have call successors, (25), 1 states have call predecessors, (25), 38 states have return successors, (60), 57 states have call predecessors, (60), 25 states have call successors, (60) [2022-12-13 18:19:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-12-13 18:19:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-12-13 18:19:39,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:19:39,015 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:19:39,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 18:19:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 18:19:39,217 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:19:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:19:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash -623426708, now seen corresponding path program 19 times [2022-12-13 18:19:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:19:39,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010686725] [2022-12-13 18:19:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:19:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:19:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:19:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:43,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:44,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 18:19:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:45,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:46,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:19:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 138 proven. 2122 refuted. 0 times theorem prover too weak. 2515 trivial. 0 not checked. [2022-12-13 18:19:48,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:19:48,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010686725] [2022-12-13 18:19:48,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010686725] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:19:48,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359738430] [2022-12-13 18:19:48,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:19:48,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:19:48,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:19:48,444 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:19:48,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 18:19:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:19:48,812 WARN L261 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 457 conjunts are in the unsatisfiable core [2022-12-13 18:19:48,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:19:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 18 proven. 2106 refuted. 0 times theorem prover too weak. 2651 trivial. 0 not checked. [2022-12-13 18:19:51,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:20:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 59 proven. 3907 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2022-12-13 18:20:07,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359738430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:20:07,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:20:07,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 66] total 132 [2022-12-13 18:20:07,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196851741] [2022-12-13 18:20:07,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:20:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-12-13 18:20:07,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:20:07,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-12-13 18:20:07,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=16780, Unknown=0, NotChecked=0, Total=17292 [2022-12-13 18:20:07,459 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2022-12-13 18:20:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:20:10,456 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-12-13 18:20:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 18:20:10,456 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) Word has length 272 [2022-12-13 18:20:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:20:10,457 INFO L225 Difference]: With dead ends: 84 [2022-12-13 18:20:10,457 INFO L226 Difference]: Without dead ends: 74 [2022-12-13 18:20:10,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 535 SyntacticMatches, 37 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9073 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1812, Invalid=29340, Unknown=0, NotChecked=0, Total=31152 [2022-12-13 18:20:10,459 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 184 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:20:10,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1251 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 18:20:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-13 18:20:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-12-13 18:20:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 18:20:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2022-12-13 18:20:10,463 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 272 [2022-12-13 18:20:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:20:10,463 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2022-12-13 18:20:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2022-12-13 18:20:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2022-12-13 18:20:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-12-13 18:20:10,464 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:20:10,464 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:20:10,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 18:20:10,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:10,665 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:20:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:20:10,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1136901598, now seen corresponding path program 20 times [2022-12-13 18:20:10,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:20:10,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210182262] [2022-12-13 18:20:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:20:10,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:20:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:20:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:15,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:20:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:17,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 146 proven. 2354 refuted. 0 times theorem prover too weak. 2806 trivial. 0 not checked. [2022-12-13 18:20:21,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:20:21,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210182262] [2022-12-13 18:20:21,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210182262] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:20:21,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286924814] [2022-12-13 18:20:21,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:20:21,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:20:21,289 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:20:21,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 18:20:21,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:20:21,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:20:21,613 WARN L261 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 481 conjunts are in the unsatisfiable core [2022-12-13 18:20:21,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:20:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 19 proven. 2337 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2022-12-13 18:20:24,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:20:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 62 proven. 4352 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2022-12-13 18:20:45,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286924814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:20:45,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:20:45,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 69] total 138 [2022-12-13 18:20:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411260194] [2022-12-13 18:20:45,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:20:45,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-12-13 18:20:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:20:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-12-13 18:20:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=18370, Unknown=0, NotChecked=0, Total=18906 [2022-12-13 18:20:45,324 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) [2022-12-13 18:20:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:20:49,212 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2022-12-13 18:20:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-13 18:20:49,213 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) Word has length 286 [2022-12-13 18:20:49,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:20:49,213 INFO L225 Difference]: With dead ends: 87 [2022-12-13 18:20:49,213 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 18:20:49,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 563 SyntacticMatches, 39 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9945 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1942, Invalid=32098, Unknown=0, NotChecked=0, Total=34040 [2022-12-13 18:20:49,216 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 350 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 4367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:20:49,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1994 Invalid, 4367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 18:20:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 18:20:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-13 18:20:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 21 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2022-12-13 18:20:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2022-12-13 18:20:49,220 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 286 [2022-12-13 18:20:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:20:49,220 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2022-12-13 18:20:49,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) [2022-12-13 18:20:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2022-12-13 18:20:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-12-13 18:20:49,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:20:49,222 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 40, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:20:49,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 18:20:49,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:20:49,423 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:20:49,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:20:49,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1075139924, now seen corresponding path program 21 times [2022-12-13 18:20:49,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:20:49,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384945304] [2022-12-13 18:20:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:20:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:20:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:20:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:55,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 18:20:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:20:59,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:20:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:01,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 154 proven. 2598 refuted. 0 times theorem prover too weak. 3113 trivial. 0 not checked. [2022-12-13 18:21:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:21:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384945304] [2022-12-13 18:21:02,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384945304] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:21:02,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450934059] [2022-12-13 18:21:02,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:21:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:21:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:21:02,520 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:21:02,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 18:21:03,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2022-12-13 18:21:03,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:21:03,056 WARN L261 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 505 conjunts are in the unsatisfiable core [2022-12-13 18:21:03,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:21:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 20 proven. 2580 refuted. 0 times theorem prover too weak. 3265 trivial. 0 not checked. [2022-12-13 18:21:06,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:21:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 65 proven. 4821 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2022-12-13 18:21:26,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450934059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:21:26,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:21:26,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 72] total 144 [2022-12-13 18:21:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316589174] [2022-12-13 18:21:26,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:21:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2022-12-13 18:21:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:21:26,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2022-12-13 18:21:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=20032, Unknown=0, NotChecked=0, Total=20592 [2022-12-13 18:21:26,240 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 144 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 78 states have internal predecessors, (192), 27 states have call successors, (27), 1 states have call predecessors, (27), 43 states have return successors, (67), 66 states have call predecessors, (67), 27 states have call successors, (67) [2022-12-13 18:21:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:21:29,998 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2022-12-13 18:21:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 18:21:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 78 states have internal predecessors, (192), 27 states have call successors, (27), 1 states have call predecessors, (27), 43 states have return successors, (67), 66 states have call predecessors, (67), 27 states have call successors, (67) Word has length 300 [2022-12-13 18:21:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:21:29,999 INFO L225 Difference]: With dead ends: 90 [2022-12-13 18:21:29,999 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 18:21:30,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 591 SyntacticMatches, 41 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10853 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2076, Invalid=34980, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 18:21:30,005 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 106 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 3934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:21:30,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1711 Invalid, 3934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 18:21:30,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 18:21:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-12-13 18:21:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 22 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 18:21:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2022-12-13 18:21:30,011 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 300 [2022-12-13 18:21:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:21:30,012 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2022-12-13 18:21:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 140 states have (on average 1.3714285714285714) internal successors, (192), 78 states have internal predecessors, (192), 27 states have call successors, (27), 1 states have call predecessors, (27), 43 states have return successors, (67), 66 states have call predecessors, (67), 27 states have call successors, (67) [2022-12-13 18:21:30,012 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2022-12-13 18:21:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-12-13 18:21:30,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:21:30,014 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 42, 42, 42, 42, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:21:30,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 18:21:30,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 18:21:30,215 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:21:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:21:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1529643006, now seen corresponding path program 22 times [2022-12-13 18:21:30,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:21:30,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302387187] [2022-12-13 18:21:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:21:30,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:21:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:21:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:35,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:36,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:36,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:38,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 18:21:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:21:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:21:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6452 backedges. 162 proven. 2854 refuted. 0 times theorem prover too weak. 3436 trivial. 0 not checked. [2022-12-13 18:21:44,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:21:44,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302387187] [2022-12-13 18:21:44,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302387187] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:21:44,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680465862] [2022-12-13 18:21:44,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:21:44,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:21:44,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:21:44,703 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:21:44,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 18:21:45,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:21:45,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:21:45,248 WARN L261 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 529 conjunts are in the unsatisfiable core [2022-12-13 18:21:45,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:21:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6452 backedges. 21 proven. 2835 refuted. 0 times theorem prover too weak. 3596 trivial. 0 not checked. [2022-12-13 18:21:48,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:22:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6452 backedges. 68 proven. 5314 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-12-13 18:22:10,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680465862] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:22:10,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:22:10,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 75] total 150 [2022-12-13 18:22:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13260710] [2022-12-13 18:22:10,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:22:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2022-12-13 18:22:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:22:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2022-12-13 18:22:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=21766, Unknown=0, NotChecked=0, Total=22350 [2022-12-13 18:22:10,260 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 150 states, 146 states have (on average 1.36986301369863) internal successors, (200), 81 states have internal predecessors, (200), 28 states have call successors, (28), 1 states have call predecessors, (28), 45 states have return successors, (70), 69 states have call predecessors, (70), 28 states have call successors, (70) [2022-12-13 18:22:14,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:22:14,367 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2022-12-13 18:22:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 18:22:14,368 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 146 states have (on average 1.36986301369863) internal successors, (200), 81 states have internal predecessors, (200), 28 states have call successors, (28), 1 states have call predecessors, (28), 45 states have return successors, (70), 69 states have call predecessors, (70), 28 states have call successors, (70) Word has length 314 [2022-12-13 18:22:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:22:14,369 INFO L225 Difference]: With dead ends: 93 [2022-12-13 18:22:14,369 INFO L226 Difference]: Without dead ends: 83 [2022-12-13 18:22:14,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 619 SyntacticMatches, 43 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11807 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2214, Invalid=37986, Unknown=0, NotChecked=0, Total=40200 [2022-12-13 18:22:14,371 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 336 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:22:14,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1452 Invalid, 4099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 18:22:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-13 18:22:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-12-13 18:22:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 57 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 23 states have return successors, (25), 24 states have call predecessors, (25), 3 states have call successors, (25) [2022-12-13 18:22:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2022-12-13 18:22:14,375 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 314 [2022-12-13 18:22:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:22:14,376 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2022-12-13 18:22:14,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 146 states have (on average 1.36986301369863) internal successors, (200), 81 states have internal predecessors, (200), 28 states have call successors, (28), 1 states have call predecessors, (28), 45 states have return successors, (70), 69 states have call predecessors, (70), 28 states have call successors, (70) [2022-12-13 18:22:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2022-12-13 18:22:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-12-13 18:22:14,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:22:14,377 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:22:14,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 18:22:14,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 18:22:14,578 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:22:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:22:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1044506132, now seen corresponding path program 23 times [2022-12-13 18:22:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:22:14,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154917758] [2022-12-13 18:22:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:22:14,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:22:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:16,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:22:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:22,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:22:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:22:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:22:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7067 backedges. 170 proven. 3122 refuted. 0 times theorem prover too weak. 3775 trivial. 0 not checked. [2022-12-13 18:22:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:22:31,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154917758] [2022-12-13 18:22:31,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154917758] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:22:31,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948174742] [2022-12-13 18:22:31,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:22:31,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:22:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:22:31,526 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:22:31,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 18:22:32,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2022-12-13 18:22:32,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:22:32,075 WARN L261 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 553 conjunts are in the unsatisfiable core [2022-12-13 18:22:32,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:22:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 7067 backedges. 22 proven. 3103 refuted. 0 times theorem prover too weak. 3942 trivial. 0 not checked. [2022-12-13 18:22:35,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:23:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7067 backedges. 71 proven. 5832 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2022-12-13 18:23:00,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948174742] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:23:00,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:23:00,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 78] total 156 [2022-12-13 18:23:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696477968] [2022-12-13 18:23:00,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:23:00,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2022-12-13 18:23:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:23:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2022-12-13 18:23:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=23572, Unknown=0, NotChecked=0, Total=24180 [2022-12-13 18:23:00,203 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 156 states, 152 states have (on average 1.388157894736842) internal successors, (211), 84 states have internal predecessors, (211), 29 states have call successors, (29), 1 states have call predecessors, (29), 47 states have return successors, (73), 72 states have call predecessors, (73), 29 states have call successors, (73) [2022-12-13 18:23:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:23:04,469 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2022-12-13 18:23:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 18:23:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 152 states have (on average 1.388157894736842) internal successors, (211), 84 states have internal predecessors, (211), 29 states have call successors, (29), 1 states have call predecessors, (29), 47 states have return successors, (73), 72 states have call predecessors, (73), 29 states have call successors, (73) Word has length 328 [2022-12-13 18:23:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:23:04,470 INFO L225 Difference]: With dead ends: 96 [2022-12-13 18:23:04,470 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 18:23:04,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 622 SyntacticMatches, 70 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15244 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=2356, Invalid=41116, Unknown=0, NotChecked=0, Total=43472 [2022-12-13 18:23:04,474 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 101 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:23:04,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1679 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 18:23:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 18:23:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-13 18:23:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 24 states have return successors, (26), 25 states have call predecessors, (26), 3 states have call successors, (26) [2022-12-13 18:23:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2022-12-13 18:23:04,478 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 328 [2022-12-13 18:23:04,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:23:04,478 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2022-12-13 18:23:04,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 152 states have (on average 1.388157894736842) internal successors, (211), 84 states have internal predecessors, (211), 29 states have call successors, (29), 1 states have call predecessors, (29), 47 states have return successors, (73), 72 states have call predecessors, (73), 29 states have call successors, (73) [2022-12-13 18:23:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2022-12-13 18:23:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-12-13 18:23:04,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:23:04,480 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:23:04,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 18:23:04,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 18:23:04,681 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:23:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:23:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1379075554, now seen corresponding path program 24 times [2022-12-13 18:23:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:23:04,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745046114] [2022-12-13 18:23:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:23:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:23:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:23:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:09,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:11,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 18:23:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:18,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:22,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:23:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:23:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7710 backedges. 178 proven. 3402 refuted. 0 times theorem prover too weak. 4130 trivial. 0 not checked. [2022-12-13 18:23:23,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:23:23,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745046114] [2022-12-13 18:23:23,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745046114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:23:23,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276909496] [2022-12-13 18:23:23,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:23:23,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:23:23,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:23:23,517 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:23:23,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 18:23:24,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2022-12-13 18:23:24,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:23:24,274 WARN L261 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 576 conjunts are in the unsatisfiable core [2022-12-13 18:23:24,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:23:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7710 backedges. 94 proven. 3404 refuted. 0 times theorem prover too weak. 4212 trivial. 0 not checked. [2022-12-13 18:23:28,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:24:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7710 backedges. 77 proven. 6375 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2022-12-13 18:24:00,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276909496] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:24:00,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:24:00,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 60, 85] total 167 [2022-12-13 18:24:00,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247879986] [2022-12-13 18:24:00,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:24:00,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-12-13 18:24:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-12-13 18:24:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=667, Invalid=27055, Unknown=0, NotChecked=0, Total=27722 [2022-12-13 18:24:00,618 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 167 states, 162 states have (on average 1.3888888888888888) internal successors, (225), 92 states have internal predecessors, (225), 31 states have call successors, (31), 1 states have call predecessors, (31), 50 states have return successors, (78), 75 states have call predecessors, (78), 31 states have call successors, (78) [2022-12-13 18:24:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:24:05,248 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2022-12-13 18:24:05,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 18:24:05,248 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 162 states have (on average 1.3888888888888888) internal successors, (225), 92 states have internal predecessors, (225), 31 states have call successors, (31), 1 states have call predecessors, (31), 50 states have return successors, (78), 75 states have call predecessors, (78), 31 states have call successors, (78) Word has length 342 [2022-12-13 18:24:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:24:05,249 INFO L225 Difference]: With dead ends: 99 [2022-12-13 18:24:05,249 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 18:24:05,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 644 SyntacticMatches, 73 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17037 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=2733, Invalid=46329, Unknown=0, NotChecked=0, Total=49062 [2022-12-13 18:24:05,253 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 431 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 4007 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 4208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:24:05,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1810 Invalid, 4208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 4007 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 18:24:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 18:24:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-12-13 18:24:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 61 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 25 states have return successors, (27), 26 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 18:24:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2022-12-13 18:24:05,257 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 342 [2022-12-13 18:24:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:24:05,257 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2022-12-13 18:24:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 162 states have (on average 1.3888888888888888) internal successors, (225), 92 states have internal predecessors, (225), 31 states have call successors, (31), 1 states have call predecessors, (31), 50 states have return successors, (78), 75 states have call predecessors, (78), 31 states have call successors, (78) [2022-12-13 18:24:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-12-13 18:24:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-12-13 18:24:05,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:24:05,258 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 48, 48, 48, 48, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:24:05,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 18:24:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 18:24:05,460 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:24:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:24:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -13856468, now seen corresponding path program 25 times [2022-12-13 18:24:05,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:24:05,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911102139] [2022-12-13 18:24:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:24:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:24:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:07,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:24:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:09,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 18:24:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:21,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:22,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:23,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:24:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 186 proven. 3694 refuted. 0 times theorem prover too weak. 4501 trivial. 0 not checked. [2022-12-13 18:24:26,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:24:26,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911102139] [2022-12-13 18:24:26,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911102139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:24:26,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418092196] [2022-12-13 18:24:26,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:24:26,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:24:26,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:24:26,285 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:24:26,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 18:24:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:24:27,075 WARN L261 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 601 conjunts are in the unsatisfiable core [2022-12-13 18:24:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:24:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 24 proven. 3672 refuted. 0 times theorem prover too weak. 4685 trivial. 0 not checked. [2022-12-13 18:24:31,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:24:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 77 proven. 6937 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2022-12-13 18:24:59,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418092196] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:24:59,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:24:59,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 84] total 168 [2022-12-13 18:24:59,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761090531] [2022-12-13 18:24:59,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:24:59,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2022-12-13 18:24:59,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:24:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2022-12-13 18:24:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=27400, Unknown=0, NotChecked=0, Total=28056 [2022-12-13 18:24:59,274 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 168 states, 164 states have (on average 1.3658536585365855) internal successors, (224), 90 states have internal predecessors, (224), 31 states have call successors, (31), 1 states have call predecessors, (31), 51 states have return successors, (79), 78 states have call predecessors, (79), 31 states have call successors, (79) [2022-12-13 18:25:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:25:03,849 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-12-13 18:25:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 18:25:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 164 states have (on average 1.3658536585365855) internal successors, (224), 90 states have internal predecessors, (224), 31 states have call successors, (31), 1 states have call predecessors, (31), 51 states have return successors, (79), 78 states have call predecessors, (79), 31 states have call successors, (79) Word has length 356 [2022-12-13 18:25:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:25:03,850 INFO L225 Difference]: With dead ends: 102 [2022-12-13 18:25:03,850 INFO L226 Difference]: Without dead ends: 92 [2022-12-13 18:25:03,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 703 SyntacticMatches, 49 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14901 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=2652, Invalid=47748, Unknown=0, NotChecked=0, Total=50400 [2022-12-13 18:25:03,854 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 369 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:25:03,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1742 Invalid, 4196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 4010 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 18:25:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-13 18:25:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-12-13 18:25:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 63 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 26 states have return successors, (28), 27 states have call predecessors, (28), 3 states have call successors, (28) [2022-12-13 18:25:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2022-12-13 18:25:03,858 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 356 [2022-12-13 18:25:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:25:03,858 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2022-12-13 18:25:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 164 states have (on average 1.3658536585365855) internal successors, (224), 90 states have internal predecessors, (224), 31 states have call successors, (31), 1 states have call predecessors, (31), 51 states have return successors, (79), 78 states have call predecessors, (79), 31 states have call successors, (79) [2022-12-13 18:25:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2022-12-13 18:25:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-12-13 18:25:03,859 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:25:03,859 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 50, 50, 50, 50, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:25:03,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 18:25:04,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 18:25:04,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:25:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:25:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -398316482, now seen corresponding path program 26 times [2022-12-13 18:25:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:25:04,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974667221] [2022-12-13 18:25:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:25:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:25:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:25:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:14,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:15,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:16,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 18:25:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:20,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:24,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:25:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:25:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9080 backedges. 194 proven. 3998 refuted. 0 times theorem prover too weak. 4888 trivial. 0 not checked. [2022-12-13 18:25:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:25:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974667221] [2022-12-13 18:25:27,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974667221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:25:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334225516] [2022-12-13 18:25:27,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:25:27,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:25:27,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:25:27,704 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:25:27,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 18:25:28,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:25:28,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:25:28,530 WARN L261 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 625 conjunts are in the unsatisfiable core [2022-12-13 18:25:28,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:25:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9080 backedges. 25 proven. 3975 refuted. 0 times theorem prover too weak. 5080 trivial. 0 not checked. [2022-12-13 18:25:33,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:26:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9080 backedges. 80 proven. 7526 refuted. 0 times theorem prover too weak. 1474 trivial. 0 not checked. [2022-12-13 18:26:02,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334225516] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:26:02,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:26:02,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 87] total 174 [2022-12-13 18:26:02,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690229610] [2022-12-13 18:26:02,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:26:02,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2022-12-13 18:26:02,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:26:02,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2022-12-13 18:26:02,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=29422, Unknown=0, NotChecked=0, Total=30102 [2022-12-13 18:26:02,767 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 174 states, 170 states have (on average 1.3647058823529412) internal successors, (232), 93 states have internal predecessors, (232), 32 states have call successors, (32), 1 states have call predecessors, (32), 53 states have return successors, (82), 81 states have call predecessors, (82), 32 states have call successors, (82) [2022-12-13 18:26:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:26:07,908 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2022-12-13 18:26:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 18:26:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 170 states have (on average 1.3647058823529412) internal successors, (232), 93 states have internal predecessors, (232), 32 states have call successors, (32), 1 states have call predecessors, (32), 53 states have return successors, (82), 81 states have call predecessors, (82), 32 states have call successors, (82) Word has length 370 [2022-12-13 18:26:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:26:07,909 INFO L225 Difference]: With dead ends: 105 [2022-12-13 18:26:07,909 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 18:26:07,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 731 SyntacticMatches, 51 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16015 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=2806, Invalid=51250, Unknown=0, NotChecked=0, Total=54056 [2022-12-13 18:26:07,915 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 381 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 5390 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 5390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:26:07,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 2680 Invalid, 5579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 5390 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 18:26:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 18:26:07,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-12-13 18:26:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.015625) internal successors, (65), 65 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 27 states have return successors, (29), 28 states have call predecessors, (29), 3 states have call successors, (29) [2022-12-13 18:26:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2022-12-13 18:26:07,921 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 370 [2022-12-13 18:26:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:26:07,921 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2022-12-13 18:26:07,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 170 states have (on average 1.3647058823529412) internal successors, (232), 93 states have internal predecessors, (232), 32 states have call successors, (32), 1 states have call predecessors, (32), 53 states have return successors, (82), 81 states have call predecessors, (82), 32 states have call successors, (82) [2022-12-13 18:26:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2022-12-13 18:26:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-12-13 18:26:07,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:26:07,924 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 52, 52, 52, 52, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:26:07,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-13 18:26:08,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 18:26:08,126 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:26:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:26:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1726934932, now seen corresponding path program 27 times [2022-12-13 18:26:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:26:08,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776030314] [2022-12-13 18:26:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:26:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:26:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:26:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:19,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:20,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:21,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:21,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:21,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-12-13 18:26:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:26,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:26:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:26:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9807 backedges. 202 proven. 4314 refuted. 0 times theorem prover too weak. 5291 trivial. 0 not checked. [2022-12-13 18:26:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:26:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776030314] [2022-12-13 18:26:33,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776030314] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:26:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440045399] [2022-12-13 18:26:33,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:26:33,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:26:33,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:26:33,068 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:26:33,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 18:26:34,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-12-13 18:26:34,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:26:34,249 WARN L261 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 649 conjunts are in the unsatisfiable core [2022-12-13 18:26:34,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:26:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9807 backedges. 26 proven. 4290 refuted. 0 times theorem prover too weak. 5491 trivial. 0 not checked. [2022-12-13 18:26:38,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:27:11,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9807 backedges. 83 proven. 8139 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2022-12-13 18:27:11,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440045399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:27:11,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:27:11,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 90] total 180 [2022-12-13 18:27:11,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911522658] [2022-12-13 18:27:11,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:27:11,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2022-12-13 18:27:11,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2022-12-13 18:27:11,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=31516, Unknown=0, NotChecked=0, Total=32220 [2022-12-13 18:27:11,623 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand has 180 states, 176 states have (on average 1.3636363636363635) internal successors, (240), 96 states have internal predecessors, (240), 33 states have call successors, (33), 1 states have call predecessors, (33), 55 states have return successors, (85), 84 states have call predecessors, (85), 33 states have call successors, (85) [2022-12-13 18:27:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:16,871 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2022-12-13 18:27:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-13 18:27:16,871 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 176 states have (on average 1.3636363636363635) internal successors, (240), 96 states have internal predecessors, (240), 33 states have call successors, (33), 1 states have call predecessors, (33), 55 states have return successors, (85), 84 states have call predecessors, (85), 33 states have call successors, (85) Word has length 384 [2022-12-13 18:27:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:16,872 INFO L225 Difference]: With dead ends: 108 [2022-12-13 18:27:16,872 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 18:27:16,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 759 SyntacticMatches, 53 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17167 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=2964, Invalid=54876, Unknown=0, NotChecked=0, Total=57840 [2022-12-13 18:27:16,876 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 75 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 5137 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 5165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:16,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1835 Invalid, 5165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 5137 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 18:27:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 18:27:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 18:27:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 28 states have return successors, (30), 29 states have call predecessors, (30), 3 states have call successors, (30) [2022-12-13 18:27:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2022-12-13 18:27:16,881 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 384 [2022-12-13 18:27:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2022-12-13 18:27:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 176 states have (on average 1.3636363636363635) internal successors, (240), 96 states have internal predecessors, (240), 33 states have call successors, (33), 1 states have call predecessors, (33), 55 states have return successors, (85), 84 states have call predecessors, (85), 33 states have call successors, (85) [2022-12-13 18:27:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2022-12-13 18:27:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-12-13 18:27:16,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:16,882 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 54, 54, 54, 54, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:27:16,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-13 18:27:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:17,084 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1294538334, now seen corresponding path program 28 times [2022-12-13 18:27:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:17,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886164593] [2022-12-13 18:27:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:27:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:22,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:27,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 18:27:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:27:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10562 backedges. 210 proven. 4642 refuted. 0 times theorem prover too weak. 5710 trivial. 0 not checked. [2022-12-13 18:27:44,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:44,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886164593] [2022-12-13 18:27:44,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886164593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:27:44,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861605039] [2022-12-13 18:27:44,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:27:44,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:44,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:27:44,780 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:27:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 18:27:45,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:27:45,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:27:45,597 WARN L261 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 673 conjunts are in the unsatisfiable core [2022-12-13 18:27:45,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:27:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 10562 backedges. 27 proven. 4617 refuted. 0 times theorem prover too weak. 5918 trivial. 0 not checked. [2022-12-13 18:27:50,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:28:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10562 backedges. 86 proven. 8776 refuted. 0 times theorem prover too weak. 1700 trivial. 0 not checked. [2022-12-13 18:28:24,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861605039] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:28:24,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:28:24,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 93] total 186 [2022-12-13 18:28:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205150262] [2022-12-13 18:28:24,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:28:24,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2022-12-13 18:28:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2022-12-13 18:28:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=33682, Unknown=0, NotChecked=0, Total=34410 [2022-12-13 18:28:24,489 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 186 states, 182 states have (on average 1.3626373626373627) internal successors, (248), 99 states have internal predecessors, (248), 34 states have call successors, (34), 1 states have call predecessors, (34), 57 states have return successors, (88), 87 states have call predecessors, (88), 34 states have call successors, (88) [2022-12-13 18:28:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:29,826 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2022-12-13 18:28:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-12-13 18:28:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 182 states have (on average 1.3626373626373627) internal successors, (248), 99 states have internal predecessors, (248), 34 states have call successors, (34), 1 states have call predecessors, (34), 57 states have return successors, (88), 87 states have call predecessors, (88), 34 states have call successors, (88) Word has length 398 [2022-12-13 18:28:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:29,828 INFO L225 Difference]: With dead ends: 111 [2022-12-13 18:28:29,828 INFO L226 Difference]: Without dead ends: 101 [2022-12-13 18:28:29,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 787 SyntacticMatches, 55 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18359 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=3126, Invalid=58626, Unknown=0, NotChecked=0, Total=61752 [2022-12-13 18:28:29,833 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 935 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:29,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2025 Invalid, 4975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 4507 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 18:28:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-13 18:28:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-12-13 18:28:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 69 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 29 states have return successors, (31), 30 states have call predecessors, (31), 3 states have call successors, (31) [2022-12-13 18:28:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2022-12-13 18:28:29,837 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 398 [2022-12-13 18:28:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:29,837 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2022-12-13 18:28:29,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 182 states have (on average 1.3626373626373627) internal successors, (248), 99 states have internal predecessors, (248), 34 states have call successors, (34), 1 states have call predecessors, (34), 57 states have return successors, (88), 87 states have call predecessors, (88), 34 states have call successors, (88) [2022-12-13 18:28:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-12-13 18:28:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-12-13 18:28:29,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:29,839 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 56, 56, 56, 56, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:28:29,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 18:28:30,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 18:28:30,040 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 38180780, now seen corresponding path program 29 times [2022-12-13 18:28:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:30,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523017329] [2022-12-13 18:28:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:28:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:36,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:41,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:44,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:45,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:46,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:47,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 18:28:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:58,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:59,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:28:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:01,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:29:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11345 backedges. 218 proven. 4982 refuted. 0 times theorem prover too weak. 6145 trivial. 0 not checked. [2022-12-13 18:29:01,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:01,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523017329] [2022-12-13 18:29:01,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523017329] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:01,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60359816] [2022-12-13 18:29:01,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:29:01,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:01,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:01,180 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:01,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee0cdeed-6914-4574-8131-3f4fb4e3b71f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 18:29:02,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2022-12-13 18:29:02,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:29:02,377 WARN L261 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 697 conjunts are in the unsatisfiable core [2022-12-13 18:29:02,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11345 backedges. 28 proven. 4956 refuted. 0 times theorem prover too weak. 6361 trivial. 0 not checked. [2022-12-13 18:29:07,404 INFO L328 TraceCheckSpWp]: Computing backward predicates...