./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max20-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R --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-38b53e6 [2022-11-25 17:25:56,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:25:56,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:25:56,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:25:56,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:25:56,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:25:56,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:25:56,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:25:56,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:25:56,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:25:56,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:25:56,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:25:56,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:25:56,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:25:56,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:25:56,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:25:56,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:25:56,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:25:56,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:25:56,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:25:56,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:25:56,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:25:56,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:25:56,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:25:56,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:25:56,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:25:56,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:25:56,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:25:56,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:25:56,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:25:56,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:25:56,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:25:56,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:25:56,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:25:56,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:25:56,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:25:56,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:25:56,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:25:56,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:25:56,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:25:56,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:25:56,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:25:56,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:25:56,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:25:56,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:25:56,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:25:56,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:25:56,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:25:56,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:25:56,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:25:56,280 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:25:56,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:25:56,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:25:56,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:25:56,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:25:56,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:25:56,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:25:56,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:25:56,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:25:56,282 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:25:56,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:25:56,283 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:25:56,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:25:56,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:25:56,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:25:56,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:25:56,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:56,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:25:56,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:25:56,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:25:56,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:25:56,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:25:56,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:25:56,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:25:56,286 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:25:56,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:25:56,287 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_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da9ac0c3f4abc9a6d9e8b4bf1276cf60fb65e65c55d9f94968d51682bf71ef87 [2022-11-25 17:25:56,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:25:56,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:25:56,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:25:56,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:25:56,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:25:56,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/reducercommutativity/max20-1.i [2022-11-25 17:25:59,726 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:26:00,007 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:26:00,008 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/sv-benchmarks/c/reducercommutativity/max20-1.i [2022-11-25 17:26:00,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/data/c5741515e/37d89f6e170e4058b49dafd87bbd3d6c/FLAG30f8e4883 [2022-11-25 17:26:00,029 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/data/c5741515e/37d89f6e170e4058b49dafd87bbd3d6c [2022-11-25 17:26:00,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:26:00,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:26:00,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:00,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:26:00,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:26:00,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b26926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00, skipping insertion in model container [2022-11-25 17:26:00,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:26:00,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:26:00,239 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_468210d5-d5a7-41fd-8a34-8cb9c8308835/sv-benchmarks/c/reducercommutativity/max20-1.i[1290,1303] [2022-11-25 17:26:00,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:00,253 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:26:00,277 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_468210d5-d5a7-41fd-8a34-8cb9c8308835/sv-benchmarks/c/reducercommutativity/max20-1.i[1290,1303] [2022-11-25 17:26:00,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:26:00,292 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:26:00,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00 WrapperNode [2022-11-25 17:26:00,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:26:00,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:00,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:26:00,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:26:00,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,331 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-25 17:26:00,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:26:00,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:26:00,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:26:00,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:26:00,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:26:00,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:26:00,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:26:00,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:26:00,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (1/1) ... [2022-11-25 17:26:00,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:26:00,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:00,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:26:00,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:26:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:26:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-11-25 17:26:00,463 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-11-25 17:26:00,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:26:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:26:00,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:26:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:26:00,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:26:00,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:26:00,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:26:00,545 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:26:00,547 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:26:00,708 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:26:00,716 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:26:00,716 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 17:26:00,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:00 BoogieIcfgContainer [2022-11-25 17:26:00,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:26:00,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:26:00,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:26:00,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:26:00,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:26:00" (1/3) ... [2022-11-25 17:26:00,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb07071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:00, skipping insertion in model container [2022-11-25 17:26:00,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:26:00" (2/3) ... [2022-11-25 17:26:00,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb07071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:26:00, skipping insertion in model container [2022-11-25 17:26:00,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:26:00" (3/3) ... [2022-11-25 17:26:00,741 INFO L112 eAbstractionObserver]: Analyzing ICFG max20-1.i [2022-11-25 17:26:00,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:26:00,772 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:26:00,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:26:00,895 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;@7b138650, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:26:00,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:26:00,921 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) [2022-11-25 17:26:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 17:26:00,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:00,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:00,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2022-11-25 17:26:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:00,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490076927] [2022-11-25 17:26:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:26:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 17:26:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:26:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:26:01,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:01,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490076927] [2022-11-25 17:26:01,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490076927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:01,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:01,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:01,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126266601] [2022-11-25 17:26:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:26:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:26:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:26:01,320 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) [2022-11-25 17:26:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:01,375 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-25 17:26:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:26:01,382 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 [2022-11-25 17:26:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:01,391 INFO L225 Difference]: With dead ends: 52 [2022-11-25 17:26:01,391 INFO L226 Difference]: Without dead ends: 24 [2022-11-25 17:26:01,395 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 [2022-11-25 17:26:01,399 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 [2022-11-25 17:26:01,401 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] [2022-11-25 17:26:01,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-25 17:26:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-25 17:26:01,449 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) [2022-11-25 17:26:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-25 17:26:01,453 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-11-25 17:26:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:01,453 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-25 17:26:01,454 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) [2022-11-25 17:26:01,454 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-25 17:26:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 17:26:01,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:01,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:01,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:26:01,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2022-11-25 17:26:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752249771] [2022-11-25 17:26:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:26:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 17:26:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:26:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:26:01,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:01,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752249771] [2022-11-25 17:26:01,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752249771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104843775] [2022-11-25 17:26:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:01,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:01,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:01,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:26:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:01,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:26:01,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:26:01,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:01,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104843775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:01,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:26:01,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 17:26:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160059608] [2022-11-25 17:26:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:01,863 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) [2022-11-25 17:26:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:01,880 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-25 17:26:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-25 17:26:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:01,882 INFO L225 Difference]: With dead ends: 46 [2022-11-25 17:26:01,882 INFO L226 Difference]: Without dead ends: 26 [2022-11-25 17:26:01,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:01,885 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 [2022-11-25 17:26:01,886 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] [2022-11-25 17:26:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-25 17:26:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-25 17:26:01,892 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) [2022-11-25 17:26:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-25 17:26:01,894 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2022-11-25 17:26:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:01,894 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-25 17:26:01,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 17:26:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-25 17:26:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 17:26:01,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:01,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:01,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:02,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:02,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:02,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2022-11-25 17:26:02,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:02,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138621856] [2022-11-25 17:26:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:02,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:26:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:26:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 17:26:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:26:02,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:02,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138621856] [2022-11-25 17:26:02,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138621856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515509889] [2022-11-25 17:26:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:02,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:02,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:02,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:26:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:26:02,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:26:02,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:02,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515509889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:02,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:26:02,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 17:26:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127573811] [2022-11-25 17:26:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:02,447 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) [2022-11-25 17:26:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:02,482 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-25 17:26:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-25 17:26:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:02,488 INFO L225 Difference]: With dead ends: 48 [2022-11-25 17:26:02,488 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 17:26:02,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:26:02,490 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 [2022-11-25 17:26:02,491 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] [2022-11-25 17:26:02,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 17:26:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-25 17:26:02,496 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) [2022-11-25 17:26:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-25 17:26:02,498 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2022-11-25 17:26:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:02,501 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-25 17:26:02,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 17:26:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-25 17:26:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 17:26:02,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:02,508 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] [2022-11-25 17:26:02,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:02,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:02,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:02,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2022-11-25 17:26:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547172304] [2022-11-25 17:26:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:02,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:26:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:26:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 17:26:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:26:02,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:02,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547172304] [2022-11-25 17:26:02,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547172304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:02,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250071574] [2022-11-25 17:26:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:02,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:02,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:02,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:02,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:26:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:03,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:26:03,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 17:26:03,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:03,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250071574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:03,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:26:03,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 17:26:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399145925] [2022-11-25 17:26:03,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:03,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:26:03,125 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) [2022-11-25 17:26:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:03,138 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-25 17:26:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:03,146 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 [2022-11-25 17:26:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:03,148 INFO L225 Difference]: With dead ends: 43 [2022-11-25 17:26:03,148 INFO L226 Difference]: Without dead ends: 28 [2022-11-25 17:26:03,148 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 [2022-11-25 17:26:03,149 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 [2022-11-25 17:26:03,152 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] [2022-11-25 17:26:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-25 17:26:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-25 17:26:03,160 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) [2022-11-25 17:26:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-25 17:26:03,163 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2022-11-25 17:26:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:03,166 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-25 17:26:03,166 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) [2022-11-25 17:26:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-25 17:26:03,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 17:26:03,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:03,169 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] [2022-11-25 17:26:03,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:26:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:03,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2022-11-25 17:26:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:03,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880709853] [2022-11-25 17:26:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:26:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:26:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 17:26:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 17:26:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880709853] [2022-11-25 17:26:03,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880709853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644878018] [2022-11-25 17:26:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:03,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:03,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:03,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:26:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:03,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:26:03,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 17:26:03,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-25 17:26:03,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644878018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:03,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:03,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-25 17:26:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297195878] [2022-11-25 17:26:03,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:26:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:03,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:26:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:26:03,806 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) [2022-11-25 17:26:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:03,883 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-11-25 17:26:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:26:03,884 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 [2022-11-25 17:26:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:03,888 INFO L225 Difference]: With dead ends: 62 [2022-11-25 17:26:03,889 INFO L226 Difference]: Without dead ends: 40 [2022-11-25 17:26:03,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:26:03,890 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 [2022-11-25 17:26:03,890 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] [2022-11-25 17:26:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-25 17:26:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-11-25 17:26:03,896 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) [2022-11-25 17:26:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-25 17:26:03,897 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2022-11-25 17:26:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:03,897 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-25 17:26:03,898 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) [2022-11-25 17:26:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-25 17:26:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:26:03,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:03,899 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] [2022-11-25 17:26:03,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:04,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2022-11-25 17:26:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:04,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86924725] [2022-11-25 17:26:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:26:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 17:26:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:04,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:26:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-25 17:26:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:04,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86924725] [2022-11-25 17:26:04,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86924725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:04,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785822864] [2022-11-25 17:26:04,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:26:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:04,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:04,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:04,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:26:04,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:26:04,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:04,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:26:04,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-25 17:26:04,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-25 17:26:04,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785822864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:04,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:04,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-25 17:26:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478650413] [2022-11-25 17:26:04,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:26:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:26:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:26:04,606 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) [2022-11-25 17:26:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:04,690 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-11-25 17:26:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:26:04,691 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 [2022-11-25 17:26:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:04,694 INFO L225 Difference]: With dead ends: 78 [2022-11-25 17:26:04,694 INFO L226 Difference]: Without dead ends: 52 [2022-11-25 17:26:04,694 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 [2022-11-25 17:26:04,695 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 [2022-11-25 17:26:04,696 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] [2022-11-25 17:26:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-25 17:26:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-25 17:26:04,702 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) [2022-11-25 17:26:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-25 17:26:04,703 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2022-11-25 17:26:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:04,703 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-25 17:26:04,703 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) [2022-11-25 17:26:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-25 17:26:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 17:26:04,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:04,705 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] [2022-11-25 17:26:04,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:04,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 17:26:04,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2022-11-25 17:26:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:04,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804293221] [2022-11-25 17:26:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 17:26:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 17:26:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 17:26:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-25 17:26:05,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:05,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804293221] [2022-11-25 17:26:05,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804293221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:05,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539447465] [2022-11-25 17:26:05,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:26:05,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:05,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:05,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:26:05,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 17:26:05,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:05,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:26:05,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-25 17:26:05,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-25 17:26:05,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539447465] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:05,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:05,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-11-25 17:26:05,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454695830] [2022-11-25 17:26:05,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:05,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 17:26:05,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 17:26:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:26:05,590 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) [2022-11-25 17:26:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:05,688 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2022-11-25 17:26:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 17:26:05,689 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 [2022-11-25 17:26:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:05,692 INFO L225 Difference]: With dead ends: 98 [2022-11-25 17:26:05,692 INFO L226 Difference]: Without dead ends: 70 [2022-11-25 17:26:05,696 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 [2022-11-25 17:26:05,696 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:05,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 160 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:26:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-25 17:26:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2022-11-25 17:26:05,713 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) [2022-11-25 17:26:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-11-25 17:26:05,714 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 76 [2022-11-25 17:26:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:05,714 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-11-25 17:26:05,714 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) [2022-11-25 17:26:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-11-25 17:26:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 17:26:05,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:05,716 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] [2022-11-25 17:26:05,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:26:05,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1821282991, now seen corresponding path program 4 times [2022-11-25 17:26:05,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:05,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687316788] [2022-11-25 17:26:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:05,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 17:26:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:26:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-25 17:26:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-11-25 17:26:06,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:06,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687316788] [2022-11-25 17:26:06,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687316788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:06,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72826188] [2022-11-25 17:26:06,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:26:06,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:06,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:06,382 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:06,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:26:06,583 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:26:06,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:06,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 17:26:06,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-11-25 17:26:06,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2022-11-25 17:26:06,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72826188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:06,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:06,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2022-11-25 17:26:06,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578812761] [2022-11-25 17:26:06,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:06,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:26:06,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:26:06,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:26:06,956 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) [2022-11-25 17:26:07,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:07,040 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2022-11-25 17:26:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:26:07,041 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 [2022-11-25 17:26:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:07,042 INFO L225 Difference]: With dead ends: 131 [2022-11-25 17:26:07,042 INFO L226 Difference]: Without dead ends: 87 [2022-11-25 17:26:07,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 245 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:26:07,046 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:07,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 77 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:26:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-25 17:26:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-25 17:26:07,061 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) [2022-11-25 17:26:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2022-11-25 17:26:07,063 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 126 [2022-11-25 17:26:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:07,065 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2022-11-25 17:26:07,065 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) [2022-11-25 17:26:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2022-11-25 17:26:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 17:26:07,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:07,080 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] [2022-11-25 17:26:07,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:07,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:07,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:07,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1526385697, now seen corresponding path program 5 times [2022-11-25 17:26:07,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:07,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642899284] [2022-11-25 17:26:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:07,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:26:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:26:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 17:26:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2022-11-25 17:26:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642899284] [2022-11-25 17:26:07,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642899284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339570385] [2022-11-25 17:26:07,646 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:26:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:07,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:07,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:26:10,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-11-25 17:26:10,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:10,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:26:10,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-11-25 17:26:10,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2022-11-25 17:26:10,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339570385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:10,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:10,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-11-25 17:26:10,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597158619] [2022-11-25 17:26:10,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:10,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:26:10,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:26:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:26:10,980 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) [2022-11-25 17:26:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:11,048 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2022-11-25 17:26:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:26:11,049 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 [2022-11-25 17:26:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:11,050 INFO L225 Difference]: With dead ends: 162 [2022-11-25 17:26:11,050 INFO L226 Difference]: Without dead ends: 119 [2022-11-25 17:26:11,051 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 [2022-11-25 17:26:11,053 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 [2022-11-25 17:26:11,054 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] [2022-11-25 17:26:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-25 17:26:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-25 17:26:11,068 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) [2022-11-25 17:26:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2022-11-25 17:26:11,069 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 144 [2022-11-25 17:26:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:11,069 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2022-11-25 17:26:11,069 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) [2022-11-25 17:26:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2022-11-25 17:26:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-25 17:26:11,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:11,073 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] [2022-11-25 17:26:11,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 17:26:11,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:11,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash -577234183, now seen corresponding path program 6 times [2022-11-25 17:26:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:11,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295215132] [2022-11-25 17:26:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:26:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:12,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-25 17:26:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-25 17:26:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3989 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1979 trivial. 0 not checked. [2022-11-25 17:26:12,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:12,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295215132] [2022-11-25 17:26:12,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295215132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:12,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111977520] [2022-11-25 17:26:12,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:26:12,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:12,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:12,173 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:12,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:26:12,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-25 17:26:12,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:12,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:26:12,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3989 backedges. 1634 proven. 4 refuted. 0 times theorem prover too weak. 2351 trivial. 0 not checked. [2022-11-25 17:26:12,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3989 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-11-25 17:26:12,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111977520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:12,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:12,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2022-11-25 17:26:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749111503] [2022-11-25 17:26:12,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:12,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:26:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:26:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:26:12,500 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) [2022-11-25 17:26:12,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:12,617 INFO L93 Difference]: Finished difference Result 209 states and 253 transitions. [2022-11-25 17:26:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 17:26:12,619 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 [2022-11-25 17:26:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:12,623 INFO L225 Difference]: With dead ends: 209 [2022-11-25 17:26:12,623 INFO L226 Difference]: Without dead ends: 134 [2022-11-25 17:26:12,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:26:12,625 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:12,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 115 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:26:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-25 17:26:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2022-11-25 17:26:12,647 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) [2022-11-25 17:26:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2022-11-25 17:26:12,648 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 240 [2022-11-25 17:26:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:12,651 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2022-11-25 17:26:12,651 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) [2022-11-25 17:26:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2022-11-25 17:26:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-25 17:26:12,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:12,657 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] [2022-11-25 17:26:12,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:12,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:12,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:12,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1044531828, now seen corresponding path program 7 times [2022-11-25 17:26:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:12,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921181365] [2022-11-25 17:26:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:12,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:26:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-25 17:26:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:13,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-25 17:26:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4546 backedges. 0 proven. 2303 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2022-11-25 17:26:13,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:13,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921181365] [2022-11-25 17:26:13,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921181365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:13,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853383270] [2022-11-25 17:26:13,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:26:13,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:13,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:13,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:13,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:26:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:14,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:26:14,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4546 backedges. 1864 proven. 435 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2022-11-25 17:26:14,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4546 backedges. 0 proven. 2303 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2022-11-25 17:26:14,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853383270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:14,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:14,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 22 [2022-11-25 17:26:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605152585] [2022-11-25 17:26:14,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:14,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 17:26:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 17:26:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:26:14,549 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) [2022-11-25 17:26:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:14,678 INFO L93 Difference]: Finished difference Result 238 states and 287 transitions. [2022-11-25 17:26:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:26:14,678 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 [2022-11-25 17:26:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:14,682 INFO L225 Difference]: With dead ends: 238 [2022-11-25 17:26:14,682 INFO L226 Difference]: Without dead ends: 151 [2022-11-25 17:26:14,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 510 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:26:14,684 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-25 17:26:14,684 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] [2022-11-25 17:26:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-25 17:26:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-25 17:26:14,693 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) [2022-11-25 17:26:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 175 transitions. [2022-11-25 17:26:14,696 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 175 transitions. Word has length 260 [2022-11-25 17:26:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:14,697 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 175 transitions. [2022-11-25 17:26:14,697 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) [2022-11-25 17:26:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 175 transitions. [2022-11-25 17:26:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-25 17:26:14,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:14,703 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] [2022-11-25 17:26:14,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:14,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:14,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash 259706899, now seen corresponding path program 8 times [2022-11-25 17:26:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:14,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327453072] [2022-11-25 17:26:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:14,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:15,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:26:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 17:26:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-11-25 17:26:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-11-25 17:26:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:15,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327453072] [2022-11-25 17:26:15,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327453072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:15,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090642226] [2022-11-25 17:26:15,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:26:15,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:15,510 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:15,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:26:15,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:26:15,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:15,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:26:15,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 3290 proven. 36 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2022-11-25 17:26:15,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7711 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-11-25 17:26:16,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090642226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:16,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:16,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-11-25 17:26:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044426366] [2022-11-25 17:26:16,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:16,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:26:16,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:26:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:26:16,071 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) [2022-11-25 17:26:16,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:16,122 INFO L93 Difference]: Finished difference Result 258 states and 310 transitions. [2022-11-25 17:26:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:26:16,123 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 [2022-11-25 17:26:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:16,124 INFO L225 Difference]: With dead ends: 258 [2022-11-25 17:26:16,125 INFO L226 Difference]: Without dead ends: 167 [2022-11-25 17:26:16,125 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 [2022-11-25 17:26:16,126 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 [2022-11-25 17:26:16,126 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] [2022-11-25 17:26:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-25 17:26:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-25 17:26:16,132 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) [2022-11-25 17:26:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 191 transitions. [2022-11-25 17:26:16,133 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 191 transitions. Word has length 320 [2022-11-25 17:26:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:16,134 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 191 transitions. [2022-11-25 17:26:16,134 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) [2022-11-25 17:26:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 191 transitions. [2022-11-25 17:26:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-11-25 17:26:16,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:16,140 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] [2022-11-25 17:26:16,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:16,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:26:16,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:16,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash -849918461, now seen corresponding path program 9 times [2022-11-25 17:26:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:16,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423985671] [2022-11-25 17:26:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:17,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:26:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 17:26:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-25 17:26:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7871 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-11-25 17:26:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:17,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423985671] [2022-11-25 17:26:17,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423985671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:17,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398158633] [2022-11-25 17:26:17,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:26:17,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:17,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:17,163 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:17,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:26:22,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-25 17:26:22,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:22,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 17:26:22,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7871 backedges. 3290 proven. 196 refuted. 0 times theorem prover too weak. 4385 trivial. 0 not checked. [2022-11-25 17:26:22,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7871 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 7675 trivial. 0 not checked. [2022-11-25 17:26:23,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398158633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:23,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:23,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2022-11-25 17:26:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773975325] [2022-11-25 17:26:23,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:23,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 17:26:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:23,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 17:26:23,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:26:23,073 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) [2022-11-25 17:26:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:26:23,150 INFO L93 Difference]: Finished difference Result 268 states and 317 transitions. [2022-11-25 17:26:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 17:26:23,151 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 [2022-11-25 17:26:23,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:26:23,152 INFO L225 Difference]: With dead ends: 268 [2022-11-25 17:26:23,152 INFO L226 Difference]: Without dead ends: 177 [2022-11-25 17:26:23,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 662 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:26:23,154 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:26:23,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:26:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-25 17:26:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-25 17:26:23,162 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) [2022-11-25 17:26:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 201 transitions. [2022-11-25 17:26:23,164 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 201 transitions. Word has length 336 [2022-11-25 17:26:23,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:26:23,164 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 201 transitions. [2022-11-25 17:26:23,165 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) [2022-11-25 17:26:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 201 transitions. [2022-11-25 17:26:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-25 17:26:23,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:26:23,171 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] [2022-11-25 17:26:23,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:23,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:26:23,387 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:26:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1596627961, now seen corresponding path program 10 times [2022-11-25 17:26:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:23,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065452443] [2022-11-25 17:26:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-25 17:26:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 17:26:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-25 17:26:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8036 backedges. 88 proven. 4084 refuted. 0 times theorem prover too weak. 3864 trivial. 0 not checked. [2022-11-25 17:26:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:29,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065452443] [2022-11-25 17:26:29,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065452443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:29,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739868783] [2022-11-25 17:26:29,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:26:29,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:29,851 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:29,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468210d5-d5a7-41fd-8a34-8cb9c8308835/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:26:30,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:26:30,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:30,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 279 conjunts are in the unsatisfiable core [2022-11-25 17:26:30,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:47,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:47,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:48,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:48,008 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 [2022-11-25 17:26:57,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:57,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:57,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:57,945 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 [2022-11-25 17:26:59,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:59,063 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 [2022-11-25 17:26:59,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:26:59,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:26:59,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:26:59,772 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 [2022-11-25 17:27:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:01,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:01,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:01,051 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 [2022-11-25 17:27:02,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:02,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:02,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:02,213 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 [2022-11-25 17:27:03,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:03,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:03,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:03,353 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 [2022-11-25 17:27:04,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:04,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:04,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:04,478 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 [2022-11-25 17:27:05,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:05,441 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:05,441 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 [2022-11-25 17:27:06,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:06,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:06,376 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:06,377 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 [2022-11-25 17:27:07,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:07,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:07,259 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:07,259 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 [2022-11-25 17:27:08,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:08,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:08,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:08,174 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 [2022-11-25 17:27:09,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:09,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:09,115 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 [2022-11-25 17:27:09,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:09,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:09,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:09,940 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 [2022-11-25 17:27:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:10,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:10,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:10,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:10,755 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 [2022-11-25 17:27:11,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:11,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:11,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:11,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:11,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:11,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:11,551 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 [2022-11-25 17:27:12,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:12,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:12,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:12,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:12,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:12,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:12,302 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 [2022-11-25 17:27:13,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:13,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:13,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:13,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:13,031 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 [2022-11-25 17:27:13,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:13,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:27:13,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 17:27:13,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:13,684 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 [2022-11-25 17:27:14,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:14,332 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 [2022-11-25 17:27:14,674 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:27:14,675 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 [2022-11-25 17:27:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8036 backedges. 8 proven. 6848 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2022-11-25 17:27:22,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:36:46,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:36:46,269 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 [2022-11-25 17:37:42,175 INFO L321 Elim1Store]: treesize reduction 21, result has 96.7 percent of original size [2022-11-25 17:37:42,175 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 [2022-11-25 17:38:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8036 backedges. 2368 proven. 4485 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2022-11-25 17:38:53,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739868783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:38:53,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:38:53,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 145, 142] total 297 [2022-11-25 17:38:53,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633858441] [2022-11-25 17:38:53,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:38:53,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 297 states [2022-11-25 17:38:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:38:53,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 297 interpolants. [2022-11-25 17:38:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4701, Invalid=83053, Unknown=158, NotChecked=0, Total=87912 [2022-11-25 17:38:53,542 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)