./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max20-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/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_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max20-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/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_773ed842-8766-4e1f-9111-35943f68d1de/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 da9ac0c3f4abc9a6d9e8b4bf1276cf60fb65e65c55d9f94968d51682bf71ef87 --- 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 12:52:58,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:52:58,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:52:58,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:52:58,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:52:58,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:52:58,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:52:58,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:52:58,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:52:58,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:52:58,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:52:58,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:52:58,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:52:58,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:52:58,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:52:58,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:52:58,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:52:58,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:52:58,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:52:58,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:52:58,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:52:58,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:52:58,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:52:58,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:52:58,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:52:58,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:52:58,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:52:58,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:52:58,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:52:58,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:52:58,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:52:58,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:52:58,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:52:58,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:52:58,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:52:58,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:52:58,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:52:58,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:52:58,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:52:58,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:52:58,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:52:58,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:52:58,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:52:58,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:52:58,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:52:58,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:52:58,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:52:58,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:52:58,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:52:58,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:52:58,140 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:52:58,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:52:58,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:52:58,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:52:58,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:52:58,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:52:58,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:52:58,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:52:58,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:52:58,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:52:58,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:52:58,143 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:52:58,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:52:58,143 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:52:58,143 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_773ed842-8766-4e1f-9111-35943f68d1de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9ac0c3f4abc9a6d9e8b4bf1276cf60fb65e65c55d9f94968d51682bf71ef87 [2022-12-13 12:52:58,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:52:58,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:52:58,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:52:58,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:52:58,339 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:52:58,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/reducercommutativity/max20-1.i [2022-12-13 12:53:01,015 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:53:01,156 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:53:01,157 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/sv-benchmarks/c/reducercommutativity/max20-1.i [2022-12-13 12:53:01,161 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/data/5a15dd4db/60be2a73b97442d8af9e8dc730240a47/FLAGf378fc9d2 [2022-12-13 12:53:01,175 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/data/5a15dd4db/60be2a73b97442d8af9e8dc730240a47 [2022-12-13 12:53:01,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:53:01,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:53:01,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:53:01,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:53:01,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:53:01,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55528493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01, skipping insertion in model container [2022-12-13 12:53:01,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:53:01,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:53:01,358 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_773ed842-8766-4e1f-9111-35943f68d1de/sv-benchmarks/c/reducercommutativity/max20-1.i[1290,1303] [2022-12-13 12:53:01,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:53:01,368 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:53:01,387 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_773ed842-8766-4e1f-9111-35943f68d1de/sv-benchmarks/c/reducercommutativity/max20-1.i[1290,1303] [2022-12-13 12:53:01,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:53:01,397 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:53:01,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01 WrapperNode [2022-12-13 12:53:01,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:53:01,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:53:01,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:53:01,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:53:01,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,429 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-12-13 12:53:01,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:53:01,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:53:01,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:53:01,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:53:01,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,451 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:53:01,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:53:01,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:53:01,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:53:01,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (1/1) ... [2022-12-13 12:53:01,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:53:01,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:01,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:53:01,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:53:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:53:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-12-13 12:53:01,512 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-12-13 12:53:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:53:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:53:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:53:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:53:01,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:53:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:53:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:53:01,569 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:53:01,571 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:53:01,674 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:53:01,679 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:53:01,679 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 12:53:01,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:53:01 BoogieIcfgContainer [2022-12-13 12:53:01,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:53:01,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:53:01,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:53:01,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:53:01,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:53:01" (1/3) ... [2022-12-13 12:53:01,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3c8bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:53:01, skipping insertion in model container [2022-12-13 12:53:01,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:53:01" (2/3) ... [2022-12-13 12:53:01,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3c8bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:53:01, skipping insertion in model container [2022-12-13 12:53:01,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:53:01" (3/3) ... [2022-12-13 12:53:01,689 INFO L112 eAbstractionObserver]: Analyzing ICFG max20-1.i [2022-12-13 12:53:01,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:53:01,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 12:53:01,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:53:01,754 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;@2ed2017a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:53:01,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 12:53:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:01,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 12:53:01,764 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:01,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:01,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2022-12-13 12:53:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:01,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141193689] [2022-12-13 12:53:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:01,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:53:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 12:53:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:01,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:53:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:53:01,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141193689] [2022-12-13 12:53:01,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141193689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:01,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:53:01,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:53:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291885452] [2022-12-13 12:53:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:01,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:53:01,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:53:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:53:02,004 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 12:53:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:02,018 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-12-13 12:53:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:53:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-13 12:53:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:02,026 INFO L225 Difference]: With dead ends: 52 [2022-12-13 12:53:02,026 INFO L226 Difference]: Without dead ends: 24 [2022-12-13 12:53:02,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:53:02,033 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:02,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:02,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-13 12:53:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-13 12:53:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-12-13 12:53:02,063 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-12-13 12:53:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:02,064 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-12-13 12:53:02,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 12:53:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-12-13 12:53:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 12:53:02,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:02,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:53:02,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2022-12-13 12:53:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063297869] [2022-12-13 12:53:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:02,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 12:53:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 12:53:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 12:53:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 12:53:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:02,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063297869] [2022-12-13 12:53:02,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063297869] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368059385] [2022-12-13 12:53:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:02,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:02,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:02,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:53:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:53:02,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:53:02,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:53:02,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368059385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:02,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:53:02,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 12:53:02,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835421636] [2022-12-13 12:53:02,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:53:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:53:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:53:02,294 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 12:53:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:02,305 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-12-13 12:53:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:53:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-12-13 12:53:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:02,306 INFO L225 Difference]: With dead ends: 46 [2022-12-13 12:53:02,306 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 12:53:02,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:53:02,308 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:02,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 12:53:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-12-13 12:53:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-13 12:53:02,312 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2022-12-13 12:53:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:02,312 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-13 12:53:02,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 12:53:02,312 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-13 12:53:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 12:53:02,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:02,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:02,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:53:02,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:02,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2022-12-13 12:53:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:02,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251835529] [2022-12-13 12:53:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 12:53:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 12:53:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 12:53:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:53:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:02,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251835529] [2022-12-13 12:53:02,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251835529] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:02,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419564049] [2022-12-13 12:53:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:02,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:02,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:02,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:02,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:53:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:02,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:53:02,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 12:53:02,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:53:02,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419564049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:02,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:53:02,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 12:53:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135370700] [2022-12-13 12:53:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:53:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:02,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:53:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:53:02,798 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 12:53:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:02,810 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-12-13 12:53:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:53:02,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-12-13 12:53:02,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:02,811 INFO L225 Difference]: With dead ends: 48 [2022-12-13 12:53:02,811 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 12:53:02,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:53:02,813 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:02,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 12:53:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-12-13 12:53:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-13 12:53:02,820 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2022-12-13 12:53:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:02,820 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-13 12:53:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 12:53:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-13 12:53:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 12:53:02,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:02,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:02,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:53:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:03,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2022-12-13 12:53:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:03,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391383873] [2022-12-13 12:53:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 12:53:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:53:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 12:53:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:53:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:03,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391383873] [2022-12-13 12:53:03,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391383873] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:03,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770898913] [2022-12-13 12:53:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:03,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:03,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:03,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:53:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 12:53:03,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 12:53:03,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:53:03,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770898913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:53:03,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:53:03,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 12:53:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604998955] [2022-12-13 12:53:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:53:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:53:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:53:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:03,221 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 12:53:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:03,232 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-12-13 12:53:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:53:03,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-12-13 12:53:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:03,234 INFO L225 Difference]: With dead ends: 43 [2022-12-13 12:53:03,234 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 12:53:03,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:53:03,235 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:03,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:03,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 12:53:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-12-13 12:53:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-12-13 12:53:03,239 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2022-12-13 12:53:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:03,240 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-12-13 12:53:03,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 12:53:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-12-13 12:53:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 12:53:03,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:03,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:03,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:53:03,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:03,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2022-12-13 12:53:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947071639] [2022-12-13 12:53:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 12:53:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 12:53:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:53:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 12:53:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947071639] [2022-12-13 12:53:03,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947071639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631579539] [2022-12-13 12:53:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:03,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:03,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:03,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:53:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:03,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:53:03,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 12:53:03,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 12:53:03,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631579539] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:03,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:03,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-12-13 12:53:03,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268621720] [2022-12-13 12:53:03,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:53:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:53:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:53:03,776 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 12:53:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:03,810 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-12-13 12:53:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:53:03,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-12-13 12:53:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:03,812 INFO L225 Difference]: With dead ends: 62 [2022-12-13 12:53:03,812 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 12:53:03,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:53:03,813 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:03,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:03,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 12:53:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-12-13 12:53:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-12-13 12:53:03,819 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2022-12-13 12:53:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:03,819 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-12-13 12:53:03,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 12:53:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-12-13 12:53:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 12:53:03,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:03,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:03,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:53:04,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:04,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2022-12-13 12:53:04,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:04,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936679645] [2022-12-13 12:53:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 12:53:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 12:53:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 12:53:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 12:53:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936679645] [2022-12-13 12:53:04,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936679645] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077364509] [2022-12-13 12:53:04,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:53:04,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:04,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:04,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:53:04,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:53:04,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:04,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:53:04,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-12-13 12:53:04,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-12-13 12:53:04,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077364509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:04,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:04,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 12:53:04,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677760640] [2022-12-13 12:53:04,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 12:53:04,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 12:53:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:53:04,308 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:53:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:04,352 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-12-13 12:53:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:53:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-12-13 12:53:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:04,354 INFO L225 Difference]: With dead ends: 78 [2022-12-13 12:53:04,354 INFO L226 Difference]: Without dead ends: 52 [2022-12-13 12:53:04,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 12:53:04,355 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:04,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 93 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-13 12:53:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-12-13 12:53:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-12-13 12:53:04,361 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2022-12-13 12:53:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:04,362 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-12-13 12:53:04,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 12:53:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-12-13 12:53:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 12:53:04,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:04,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:04,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:53:04,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:04,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:04,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2022-12-13 12:53:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:04,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62425340] [2022-12-13 12:53:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:53:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 12:53:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 12:53:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-13 12:53:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:04,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62425340] [2022-12-13 12:53:04,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62425340] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:04,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675746911] [2022-12-13 12:53:04,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:53:04,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:04,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:04,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:04,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:53:04,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 12:53:04,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:04,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:53:04,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-12-13 12:53:05,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-12-13 12:53:05,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675746911] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:05,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:05,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-12-13 12:53:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829784760] [2022-12-13 12:53:05,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 12:53:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 12:53:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:53:05,062 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 12:53:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:05,123 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2022-12-13 12:53:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:53:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-12-13 12:53:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:05,124 INFO L225 Difference]: With dead ends: 98 [2022-12-13 12:53:05,124 INFO L226 Difference]: Without dead ends: 70 [2022-12-13 12:53:05,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 12:53:05,125 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:05,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 160 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-13 12:53:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-12-13 12:53:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.140625) internal successors, (73), 64 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-12-13 12:53:05,130 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 76 [2022-12-13 12:53:05,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:05,131 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-12-13 12:53:05,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 12:53:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-12-13 12:53:05,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-13 12:53:05,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:05,132 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 11, 11, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:05,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:53:05,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 12:53:05,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1821282991, now seen corresponding path program 4 times [2022-12-13 12:53:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:05,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335680748] [2022-12-13 12:53:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 12:53:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 12:53:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 12:53:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-12-13 12:53:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:05,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335680748] [2022-12-13 12:53:05,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335680748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:05,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735600856] [2022-12-13 12:53:05,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:53:05,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:05,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:05,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:05,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:53:05,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:53:05,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:05,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 12:53:05,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-12-13 12:53:05,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-12-13 12:53:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735600856] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:05,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:05,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2022-12-13 12:53:05,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220266759] [2022-12-13 12:53:05,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 12:53:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 12:53:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:53:05,944 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 12:53:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:05,994 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2022-12-13 12:53:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:53:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 126 [2022-12-13 12:53:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:05,996 INFO L225 Difference]: With dead ends: 131 [2022-12-13 12:53:05,996 INFO L226 Difference]: Without dead ends: 87 [2022-12-13 12:53:05,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 245 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:53:05,997 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:05,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 77 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-13 12:53:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-12-13 12:53:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 82 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2022-12-13 12:53:06,005 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 126 [2022-12-13 12:53:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:06,006 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2022-12-13 12:53:06,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 12:53:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2022-12-13 12:53:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 12:53:06,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:06,008 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 18, 18, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:06,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:53:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 12:53:06,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:06,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1526385697, now seen corresponding path program 5 times [2022-12-13 12:53:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:06,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911494801] [2022-12-13 12:53:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:53:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 12:53:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:53:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2022-12-13 12:53:06,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:06,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911494801] [2022-12-13 12:53:06,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911494801] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126775163] [2022-12-13 12:53:06,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:53:06,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:06,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:06,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:53:08,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-12-13 12:53:08,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:08,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:53:08,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-12-13 12:53:08,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2022-12-13 12:53:08,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126775163] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:08,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:08,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-12-13 12:53:08,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627528577] [2022-12-13 12:53:08,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:08,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 12:53:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 12:53:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:53:08,874 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 12:53:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:08,923 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2022-12-13 12:53:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:53:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 144 [2022-12-13 12:53:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:08,925 INFO L225 Difference]: With dead ends: 162 [2022-12-13 12:53:08,925 INFO L226 Difference]: Without dead ends: 119 [2022-12-13 12:53:08,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-12-13 12:53:08,926 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:08,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 140 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-12-13 12:53:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-12-13 12:53:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.1491228070175439) internal successors, (131), 114 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2022-12-13 12:53:08,936 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 144 [2022-12-13 12:53:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:08,936 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2022-12-13 12:53:08,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 12:53:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2022-12-13 12:53:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-12-13 12:53:08,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:08,940 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 20, 20, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:08,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 12:53:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:09,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:09,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -577234183, now seen corresponding path program 6 times [2022-12-13 12:53:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:09,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786076068] [2022-12-13 12:53:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:53:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 12:53:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:53:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3989 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1979 trivial. 0 not checked. [2022-12-13 12:53:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:09,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786076068] [2022-12-13 12:53:09,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786076068] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25851773] [2022-12-13 12:53:09,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:53:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:09,614 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:09,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 12:53:09,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 12:53:09,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:09,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:53:09,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3989 backedges. 1634 proven. 4 refuted. 0 times theorem prover too weak. 2351 trivial. 0 not checked. [2022-12-13 12:53:09,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3989 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-12-13 12:53:09,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25851773] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:09,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:09,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2022-12-13 12:53:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746455644] [2022-12-13 12:53:09,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:09,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 12:53:09,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:09,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 12:53:09,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:53:09,805 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 12:53:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:09,868 INFO L93 Difference]: Finished difference Result 209 states and 253 transitions. [2022-12-13 12:53:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 12:53:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 240 [2022-12-13 12:53:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:09,869 INFO L225 Difference]: With dead ends: 209 [2022-12-13 12:53:09,870 INFO L226 Difference]: Without dead ends: 134 [2022-12-13 12:53:09,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-12-13 12:53:09,871 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:09,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 115 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-12-13 12:53:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-12-13 12:53:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.1428571428571428) internal successors, (144), 126 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2022-12-13 12:53:09,880 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 240 [2022-12-13 12:53:09,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:09,880 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2022-12-13 12:53:09,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 12:53:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2022-12-13 12:53:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-12-13 12:53:09,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:09,884 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 20, 20, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:09,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 12:53:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 12:53:10,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1044531828, now seen corresponding path program 7 times [2022-12-13 12:53:10,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:10,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665679184] [2022-12-13 12:53:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:10,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:53:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 12:53:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:10,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:53:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4546 backedges. 0 proven. 2303 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2022-12-13 12:53:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665679184] [2022-12-13 12:53:10,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665679184] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828470696] [2022-12-13 12:53:10,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:53:10,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:10,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:10,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:10,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 12:53:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:10,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 12:53:10,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4546 backedges. 1864 proven. 435 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2022-12-13 12:53:10,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4546 backedges. 0 proven. 2303 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2022-12-13 12:53:11,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828470696] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:11,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:11,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 22 [2022-12-13 12:53:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880762352] [2022-12-13 12:53:11,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 12:53:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 12:53:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:53:11,083 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 12:53:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:11,152 INFO L93 Difference]: Finished difference Result 238 states and 287 transitions. [2022-12-13 12:53:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:53:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 260 [2022-12-13 12:53:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:11,154 INFO L225 Difference]: With dead ends: 238 [2022-12-13 12:53:11,154 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 12:53:11,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 510 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:53:11,155 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:11,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 196 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 12:53:11,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 12:53:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-12-13 12:53:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.1575342465753424) internal successors, (169), 146 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2022-12-13 12:53:11,165 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 260 [2022-12-13 12:53:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:11,165 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2022-12-13 12:53:11,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 12:53:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2022-12-13 12:53:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-13 12:53:11,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:11,171 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 20, 20, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:11,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 12:53:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:11,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 259706899, now seen corresponding path program 8 times [2022-12-13 12:53:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:11,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913807879] [2022-12-13 12:53:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:11,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:53:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:53:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:53:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-12-13 12:53:11,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:11,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913807879] [2022-12-13 12:53:11,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913807879] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:11,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791103139] [2022-12-13 12:53:11,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:53:11,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:11,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:11,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:11,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 12:53:11,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:53:11,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:11,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 12:53:11,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 3290 proven. 36 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2022-12-13 12:53:11,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-12-13 12:53:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791103139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:12,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:12,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-12-13 12:53:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687355948] [2022-12-13 12:53:12,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:12,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 12:53:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 12:53:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:53:12,041 INFO L87 Difference]: Start difference. First operand 151 states and 175 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 12:53:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:12,081 INFO L93 Difference]: Finished difference Result 258 states and 310 transitions. [2022-12-13 12:53:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:53:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 320 [2022-12-13 12:53:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:12,083 INFO L225 Difference]: With dead ends: 258 [2022-12-13 12:53:12,083 INFO L226 Difference]: Without dead ends: 167 [2022-12-13 12:53:12,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 12:53:12,084 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:12,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-12-13 12:53:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-12-13 12:53:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.1419753086419753) internal successors, (185), 162 states have internal predecessors, (185), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2022-12-13 12:53:12,092 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 320 [2022-12-13 12:53:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:12,093 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2022-12-13 12:53:12,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 12:53:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2022-12-13 12:53:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-12-13 12:53:12,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:12,095 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 20, 20, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:12,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 12:53:12,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:12,296 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash -849918461, now seen corresponding path program 9 times [2022-12-13 12:53:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:12,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555165683] [2022-12-13 12:53:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:53:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:53:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:12,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 12:53:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7871 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-12-13 12:53:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555165683] [2022-12-13 12:53:12,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555165683] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108236322] [2022-12-13 12:53:12,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:53:12,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:12,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:12,766 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:12,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 12:53:16,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-12-13 12:53:16,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:16,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 12:53:16,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7871 backedges. 3290 proven. 196 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2022-12-13 12:53:16,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:53:16,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7871 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-12-13 12:53:16,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108236322] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:53:16,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:53:16,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2022-12-13 12:53:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488579641] [2022-12-13 12:53:16,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:53:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 12:53:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:53:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 12:53:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:53:16,901 INFO L87 Difference]: Start difference. First operand 167 states and 191 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 12:53:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:53:16,957 INFO L93 Difference]: Finished difference Result 268 states and 317 transitions. [2022-12-13 12:53:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 12:53:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 336 [2022-12-13 12:53:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:53:16,959 INFO L225 Difference]: With dead ends: 268 [2022-12-13 12:53:16,959 INFO L226 Difference]: Without dead ends: 177 [2022-12-13 12:53:16,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 662 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-12-13 12:53:16,961 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:53:16,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 12:53:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-12-13 12:53:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-12-13 12:53:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.1337209302325582) internal successors, (195), 172 states have internal predecessors, (195), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 12:53:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 201 transitions. [2022-12-13 12:53:16,971 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 201 transitions. Word has length 336 [2022-12-13 12:53:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:53:16,972 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 201 transitions. [2022-12-13 12:53:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 12:53:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 201 transitions. [2022-12-13 12:53:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-12-13 12:53:16,975 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:53:16,975 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 20, 20, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:53:16,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 12:53:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 12:53:17,177 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:53:17,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:53:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1596627961, now seen corresponding path program 10 times [2022-12-13 12:53:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:53:17,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355668532] [2022-12-13 12:53:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:53:17,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:53:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 12:53:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 12:53:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-12-13 12:53:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:53:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8036 backedges. 88 proven. 4084 refuted. 0 times theorem prover too weak. 3864 trivial. 0 not checked. [2022-12-13 12:53:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:53:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355668532] [2022-12-13 12:53:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355668532] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:53:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761668806] [2022-12-13 12:53:20,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:53:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:53:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:53:20,968 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:53:20,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_773ed842-8766-4e1f-9111-35943f68d1de/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 12:53:21,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:53:21,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:53:21,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 279 conjunts are in the unsatisfiable core [2022-12-13 12:53:21,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:53:34,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:34,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:34,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 190 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 332 treesize of output 272 [2022-12-13 12:53:40,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:40,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:40,852 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:40,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 171 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 327 treesize of output 274 [2022-12-13 12:53:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:41,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:41,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 171 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 316 treesize of output 264 [2022-12-13 12:53:42,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:42,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,120 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:42,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 153 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 316 treesize of output 264 [2022-12-13 12:53:42,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:42,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:42,945 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:42,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 136 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 299 treesize of output 250 [2022-12-13 12:53:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:43,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:43,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:43,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 282 treesize of output 236 [2022-12-13 12:53:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:44,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:44,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 265 treesize of output 222 [2022-12-13 12:53:45,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,272 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:45,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 248 treesize of output 208 [2022-12-13 12:53:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:45,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:45,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:45,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 231 treesize of output 194 [2022-12-13 12:53:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:46,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:46,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 214 treesize of output 180 [2022-12-13 12:53:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:47,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 197 treesize of output 166 [2022-12-13 12:53:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:47,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:47,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:47,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 180 treesize of output 152 [2022-12-13 12:53:48,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:48,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:48,633 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:48,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 163 treesize of output 138 [2022-12-13 12:53:49,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:49,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:49,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 146 treesize of output 124 [2022-12-13 12:53:49,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:49,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:49,948 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:49,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 110 [2022-12-13 12:53:50,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:50,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:50,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:50,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:50,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 96 [2022-12-13 12:53:51,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:51,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 82 [2022-12-13 12:53:51,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:51,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:51,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:51,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 68 [2022-12-13 12:53:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:53:52,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:53:52,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:52,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 54 [2022-12-13 12:53:52,683 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:52,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2022-12-13 12:53:52,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:53:52,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2022-12-13 12:53:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8036 backedges. 8 proven. 6848 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2022-12-13 12:53:58,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:03:51,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:03:51,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 324 treesize of output 1 [2022-12-13 13:04:37,070 INFO L321 Elim1Store]: treesize reduction 21, result has 96.7 percent of original size [2022-12-13 13:04:37,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 431 treesize of output 702 [2022-12-13 13:05:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8036 backedges. 2368 proven. 4485 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2022-12-13 13:05:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761668806] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:05:30,077 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:05:30,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 145, 142] total 297 [2022-12-13 13:05:30,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276750030] [2022-12-13 13:05:30,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:05:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 297 states [2022-12-13 13:05:30,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:05:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 297 interpolants. [2022-12-13 13:05:30,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4704, Invalid=83035, Unknown=173, NotChecked=0, Total=87912 [2022-12-13 13:05:30,091 INFO L87 Difference]: Start difference. First operand 177 states and 201 transitions. Second operand has 297 states, 294 states have (on average 1.6224489795918366) internal successors, (477), 293 states have internal predecessors, (477), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9)