./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy1_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy1_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b1ea2b89c0210def4460c68ce885cb310645908c528d57c04841cf488f85c6b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:58:14,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:58:14,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:58:14,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:58:14,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:58:14,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:58:14,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:58:14,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:58:14,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:58:14,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:58:14,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:58:14,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:58:14,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:58:14,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:58:14,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:58:14,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:58:14,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:58:14,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:58:14,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:58:14,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:58:14,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:58:14,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:58:14,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:58:14,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:58:14,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:58:14,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:58:14,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:58:14,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:58:14,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:58:14,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:58:14,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:58:14,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:58:14,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:58:14,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:58:14,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:58:14,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:58:14,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:58:14,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:58:14,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:58:14,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:58:14,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:58:14,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:58:14,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:58:14,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:58:14,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:58:14,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:58:14,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:58:14,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:58:14,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:58:14,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:58:14,708 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:58:14,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:58:14,709 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:58:14,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:58:14,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:58:14,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:58:14,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:58:14,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:58:14,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:58:14,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:58:14,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:58:14,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:58:14,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:58:14,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:58:14,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:58:14,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:58:14,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:58:14,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:58:14,712 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:58:14,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:58:14,712 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:58:14,712 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_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b1ea2b89c0210def4460c68ce885cb310645908c528d57c04841cf488f85c6b [2022-12-13 21:58:14,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:58:14,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:58:14,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:58:14,913 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:58:14,914 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:58:14,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-examples/standard_copy1_ground-1.i [2022-12-13 21:58:17,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:58:17,671 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:58:17,671 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i [2022-12-13 21:58:17,675 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/data/003e3405a/b2b885742e86488986bf36bd9c774790/FLAGbd45abe04 [2022-12-13 21:58:18,098 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/data/003e3405a/b2b885742e86488986bf36bd9c774790 [2022-12-13 21:58:18,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:58:18,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:58:18,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:58:18,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:58:18,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:58:18,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35292c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18, skipping insertion in model container [2022-12-13 21:58:18,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:58:18,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:58:18,220 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_7b198731-9972-42d1-8dd1-9fe680864749/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i[816,829] [2022-12-13 21:58:18,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:58:18,235 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:58:18,244 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_7b198731-9972-42d1-8dd1-9fe680864749/sv-benchmarks/c/array-examples/standard_copy1_ground-1.i[816,829] [2022-12-13 21:58:18,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:58:18,257 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:58:18,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18 WrapperNode [2022-12-13 21:58:18,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:58:18,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:58:18,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:58:18,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:58:18,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,280 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-12-13 21:58:18,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:58:18,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:58:18,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:58:18,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:58:18,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:58:18,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:58:18,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:58:18,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:58:18,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (1/1) ... [2022-12-13 21:58:18,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:58:18,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:18,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:58:18,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:58:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:58:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:58:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:58:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:58:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:58:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:58:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:58:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:58:18,416 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:58:18,417 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:58:18,512 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:58:18,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:58:18,516 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 21:58:18,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:58:18 BoogieIcfgContainer [2022-12-13 21:58:18,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:58:18,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:58:18,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:58:18,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:58:18,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:58:18" (1/3) ... [2022-12-13 21:58:18,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdbe4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:58:18, skipping insertion in model container [2022-12-13 21:58:18,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:58:18" (2/3) ... [2022-12-13 21:58:18,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdbe4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:58:18, skipping insertion in model container [2022-12-13 21:58:18,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:58:18" (3/3) ... [2022-12-13 21:58:18,526 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-1.i [2022-12-13 21:58:18,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:58:18,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:58:18,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:58:18,590 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;@2e0f1956, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:58:18,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:58:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:18,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 21:58:18,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:18,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:18,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2016449835, now seen corresponding path program 1 times [2022-12-13 21:58:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:18,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692640137] [2022-12-13 21:58:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:58:18,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:18,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692640137] [2022-12-13 21:58:18,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692640137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:58:18,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:58:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:58:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019294767] [2022-12-13 21:58:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:58:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:58:18,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:18,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:58:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:58:18,812 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:18,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:18,832 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-12-13 21:58:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:58:18,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 21:58:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:18,840 INFO L225 Difference]: With dead ends: 34 [2022-12-13 21:58:18,840 INFO L226 Difference]: Without dead ends: 16 [2022-12-13 21:58:18,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:58:18,845 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:18,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:58:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-13 21:58:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-12-13 21:58:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-13 21:58:18,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-12-13 21:58:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-13 21:58:18,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-13 21:58:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 21:58:18,869 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:18,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:58:18,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1564645395, now seen corresponding path program 1 times [2022-12-13 21:58:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:18,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124018330] [2022-12-13 21:58:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:58:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:18,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124018330] [2022-12-13 21:58:18,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124018330] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851409640] [2022-12-13 21:58:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:18,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:18,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:18,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:58:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:19,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:58:19,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:58:19,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:58:19,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851409640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:58:19,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:58:19,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 21:58:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562864065] [2022-12-13 21:58:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:58:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:58:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:58:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:58:19,027 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:19,039 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-12-13 21:58:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:58:19,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 21:58:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:19,040 INFO L225 Difference]: With dead ends: 24 [2022-12-13 21:58:19,040 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 21:58:19,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:58:19,042 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:19,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:58:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 21:58:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-12-13 21:58:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-13 21:58:19,047 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2022-12-13 21:58:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:19,047 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-13 21:58:19,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-13 21:58:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:58:19,048 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:19,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:19,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:58:19,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:19,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2031054225, now seen corresponding path program 1 times [2022-12-13 21:58:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:19,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007270160] [2022-12-13 21:58:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:58:19,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007270160] [2022-12-13 21:58:19,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007270160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579454354] [2022-12-13 21:58:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:19,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:19,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:19,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:19,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:58:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:19,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:58:19,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:58:19,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:58:19,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579454354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:19,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:19,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:58:19,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99969266] [2022-12-13 21:58:19,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:19,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:58:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:19,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:58:19,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:58:19,508 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:19,526 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-12-13 21:58:19,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:58:19,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 21:58:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:19,527 INFO L225 Difference]: With dead ends: 33 [2022-12-13 21:58:19,527 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 21:58:19,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:58:19,528 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:19,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:58:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 21:58:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 21:58:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-13 21:58:19,531 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2022-12-13 21:58:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:19,531 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-13 21:58:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-13 21:58:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 21:58:19,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:19,532 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:19,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:58:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:19,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:19,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2021040587, now seen corresponding path program 2 times [2022-12-13 21:58:19,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:19,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404838179] [2022-12-13 21:58:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 21:58:19,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:19,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404838179] [2022-12-13 21:58:19,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404838179] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:19,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638635283] [2022-12-13 21:58:19,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:58:19,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:19,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:19,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:19,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:58:19,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:58:19,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:58:19,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:58:19,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:58:19,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:58:20,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638635283] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:20,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:20,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 21:58:20,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908080385] [2022-12-13 21:58:20,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:20,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:58:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:58:20,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:58:20,064 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:20,112 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-12-13 21:58:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:58:20,113 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 21:58:20,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:20,114 INFO L225 Difference]: With dead ends: 48 [2022-12-13 21:58:20,114 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 21:58:20,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:58:20,115 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:20,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:58:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 21:58:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-12-13 21:58:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-12-13 21:58:20,121 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 19 [2022-12-13 21:58:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:20,121 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-12-13 21:58:20,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-12-13 21:58:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 21:58:20,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:20,122 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:20,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:58:20,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:20,325 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:20,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:20,326 INFO L85 PathProgramCache]: Analyzing trace with hash 709790269, now seen corresponding path program 3 times [2022-12-13 21:58:20,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:20,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552453216] [2022-12-13 21:58:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:20,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 21:58:20,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:20,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552453216] [2022-12-13 21:58:20,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552453216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:20,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82815381] [2022-12-13 21:58:20,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:58:20,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:20,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:20,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:58:20,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 21:58:20,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:58:20,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:58:20,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 21:58:20,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 21:58:20,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82815381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:20,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:20,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-12-13 21:58:20,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435860101] [2022-12-13 21:58:20,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:20,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 21:58:20,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:20,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 21:58:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 21:58:20,786 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:20,841 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-12-13 21:58:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:58:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-12-13 21:58:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:20,843 INFO L225 Difference]: With dead ends: 60 [2022-12-13 21:58:20,843 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 21:58:20,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 21:58:20,844 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:20,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 60 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:58:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 21:58:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-12-13 21:58:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2022-12-13 21:58:20,850 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 33 [2022-12-13 21:58:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:20,850 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2022-12-13 21:58:20,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 19 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2022-12-13 21:58:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 21:58:20,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:20,851 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:20,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:58:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:21,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:21,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -593240461, now seen corresponding path program 4 times [2022-12-13 21:58:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:21,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155889216] [2022-12-13 21:58:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:58:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:21,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155889216] [2022-12-13 21:58:21,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155889216] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:21,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293840896] [2022-12-13 21:58:21,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:58:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:21,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:21,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:58:21,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:58:21,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:58:21,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:58:21,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 21:58:21,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 21:58:21,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293840896] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:21,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:21,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2022-12-13 21:58:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635522031] [2022-12-13 21:58:21,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:21,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 21:58:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 21:58:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:58:21,559 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:21,627 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2022-12-13 21:58:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 21:58:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-12-13 21:58:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:21,628 INFO L225 Difference]: With dead ends: 86 [2022-12-13 21:58:21,628 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 21:58:21,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:58:21,628 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:21,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:58:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 21:58:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-12-13 21:58:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2022-12-13 21:58:21,633 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 43 [2022-12-13 21:58:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:21,633 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2022-12-13 21:58:21,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2022-12-13 21:58:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 21:58:21,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:21,634 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:21,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:58:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:21,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash 65706529, now seen corresponding path program 5 times [2022-12-13 21:58:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231409924] [2022-12-13 21:58:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:21,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-12-13 21:58:22,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:22,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231409924] [2022-12-13 21:58:22,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231409924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:22,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404112455] [2022-12-13 21:58:22,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:58:22,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:22,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:58:26,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-12-13 21:58:26,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:58:26,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:58:26,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 21:58:26,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 21:58:27,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404112455] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:27,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:27,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2022-12-13 21:58:27,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262189098] [2022-12-13 21:58:27,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:27,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-13 21:58:27,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-13 21:58:27,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 21:58:27,077 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:27,198 INFO L93 Difference]: Finished difference Result 136 states and 156 transitions. [2022-12-13 21:58:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 21:58:27,198 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-13 21:58:27,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:27,199 INFO L225 Difference]: With dead ends: 136 [2022-12-13 21:58:27,199 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 21:58:27,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 21:58:27,200 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:27,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:58:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 21:58:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2022-12-13 21:58:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2022-12-13 21:58:27,206 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 61 [2022-12-13 21:58:27,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:27,206 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2022-12-13 21:58:27,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2) internal successors, (99), 45 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:27,206 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2022-12-13 21:58:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 21:58:27,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:27,207 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:27,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 21:58:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:27,409 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash -342693825, now seen corresponding path program 6 times [2022-12-13 21:58:27,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:27,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238521269] [2022-12-13 21:58:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:27,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:27,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238521269] [2022-12-13 21:58:27,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238521269] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:27,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122066384] [2022-12-13 21:58:27,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:58:27,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:27,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:27,705 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:27,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:58:43,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-12-13 21:58:43,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:58:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 21:58:43,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:43,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 0 proven. 419 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-12-13 21:58:43,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122066384] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:43,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:43,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 22] total 37 [2022-12-13 21:58:43,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607796212] [2022-12-13 21:58:43,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:43,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 21:58:43,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 21:58:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 21:58:43,726 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:43,896 INFO L93 Difference]: Finished difference Result 197 states and 215 transitions. [2022-12-13 21:58:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 21:58:43,897 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-13 21:58:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:43,898 INFO L225 Difference]: With dead ends: 197 [2022-12-13 21:58:43,898 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 21:58:43,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=510, Invalid=1130, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 21:58:43,899 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:43,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 56 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:58:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 21:58:43,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-12-13 21:58:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2022-12-13 21:58:43,911 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 95 [2022-12-13 21:58:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:43,911 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2022-12-13 21:58:43,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 37 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2022-12-13 21:58:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 21:58:43,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:43,913 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:43,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:58:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 21:58:44,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 819713505, now seen corresponding path program 7 times [2022-12-13 21:58:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:44,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407928522] [2022-12-13 21:58:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:44,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:44,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407928522] [2022-12-13 21:58:44,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407928522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:44,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70716529] [2022-12-13 21:58:44,771 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:58:44,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:44,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:44,772 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:44,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:58:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:44,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 21:58:44,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:44,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1684 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:45,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70716529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:45,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:45,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2022-12-13 21:58:45,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308764569] [2022-12-13 21:58:45,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:45,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-13 21:58:45,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-13 21:58:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 21:58:45,748 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 61 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:45,880 INFO L93 Difference]: Finished difference Result 257 states and 290 transitions. [2022-12-13 21:58:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 21:58:45,881 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 61 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-12-13 21:58:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:45,882 INFO L225 Difference]: With dead ends: 257 [2022-12-13 21:58:45,882 INFO L226 Difference]: Without dead ends: 188 [2022-12-13 21:58:45,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 21:58:45,884 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:45,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:58:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-13 21:58:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-12-13 21:58:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0160427807486632) internal successors, (190), 187 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2022-12-13 21:58:45,897 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 125 [2022-12-13 21:58:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:45,897 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2022-12-13 21:58:45,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.098360655737705) internal successors, (128), 61 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2022-12-13 21:58:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-12-13 21:58:45,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:45,900 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:45,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:58:46,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:46,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1843021147, now seen corresponding path program 8 times [2022-12-13 21:58:46,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:46,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823611481] [2022-12-13 21:58:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823611481] [2022-12-13 21:58:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823611481] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065267211] [2022-12-13 21:58:48,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:58:48,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:48,067 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:48,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:58:48,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:58:48,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:58:48,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 21:58:48,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:58:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:48,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:58:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:51,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065267211] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:58:51,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:58:51,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 121 [2022-12-13 21:58:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455465223] [2022-12-13 21:58:51,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:58:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2022-12-13 21:58:51,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:58:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2022-12-13 21:58:51,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2022-12-13 21:58:51,293 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand has 121 states, 121 states have (on average 2.049586776859504) internal successors, (248), 121 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:58:51,583 INFO L93 Difference]: Finished difference Result 377 states and 440 transitions. [2022-12-13 21:58:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-12-13 21:58:51,583 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.049586776859504) internal successors, (248), 121 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-12-13 21:58:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:58:51,585 INFO L225 Difference]: With dead ends: 377 [2022-12-13 21:58:51,585 INFO L226 Difference]: Without dead ends: 308 [2022-12-13 21:58:51,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2022-12-13 21:58:51,587 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:58:51,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:58:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-13 21:58:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-12-13 21:58:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.009771986970684) internal successors, (310), 307 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 310 transitions. [2022-12-13 21:58:51,602 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 310 transitions. Word has length 185 [2022-12-13 21:58:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:58:51,602 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 310 transitions. [2022-12-13 21:58:51,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.049586776859504) internal successors, (248), 121 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:58:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 310 transitions. [2022-12-13 21:58:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-12-13 21:58:51,608 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:58:51,608 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:58:51,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:58:51,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:58:51,810 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:58:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:58:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1223502381, now seen corresponding path program 9 times [2022-12-13 21:58:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:58:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458503425] [2022-12-13 21:58:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:58:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:58:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:58:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14824 backedges. 0 proven. 13924 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2022-12-13 21:58:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:58:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458503425] [2022-12-13 21:58:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458503425] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:58:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939206516] [2022-12-13 21:58:57,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:58:57,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:58:57,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:58:57,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:58:57,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:59:58,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2022-12-13 21:59:58,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:59:58,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 21:59:58,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:59:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14824 backedges. 235 proven. 900 refuted. 0 times theorem prover too weak. 13689 trivial. 0 not checked. [2022-12-13 21:59:59,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:00:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14824 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 13924 trivial. 0 not checked. [2022-12-13 22:00:01,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939206516] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:00:01,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:00:01,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 35, 33] total 185 [2022-12-13 22:00:01,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134141995] [2022-12-13 22:00:01,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:00:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2022-12-13 22:00:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:00:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2022-12-13 22:00:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9518, Invalid=24522, Unknown=0, NotChecked=0, Total=34040 [2022-12-13 22:00:01,167 INFO L87 Difference]: Start difference. First operand 308 states and 310 transitions. Second operand has 185 states, 185 states have (on average 2.0432432432432432) internal successors, (378), 185 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:00:04,313 INFO L93 Difference]: Finished difference Result 445 states and 482 transitions. [2022-12-13 22:00:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-12-13 22:00:04,313 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 2.0432432432432432) internal successors, (378), 185 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2022-12-13 22:00:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:00:04,314 INFO L225 Difference]: With dead ends: 445 [2022-12-13 22:00:04,314 INFO L226 Difference]: Without dead ends: 376 [2022-12-13 22:00:04,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9766 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=13548, Invalid=47214, Unknown=0, NotChecked=0, Total=60762 [2022-12-13 22:00:04,318 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 138 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:00:04,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 93 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:00:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-12-13 22:00:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-12-13 22:00:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.008) internal successors, (378), 375 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 378 transitions. [2022-12-13 22:00:04,328 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 378 transitions. Word has length 305 [2022-12-13 22:00:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:00:04,328 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 378 transitions. [2022-12-13 22:00:04,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 2.0432432432432432) internal successors, (378), 185 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 378 transitions. [2022-12-13 22:00:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-12-13 22:00:04,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:00:04,332 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:00:04,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 22:00:04,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:00:04,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:00:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:00:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash 640186601, now seen corresponding path program 10 times [2022-12-13 22:00:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:00:04,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649588429] [2022-12-13 22:00:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:00:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:00:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:00:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18244 backedges. 0 proven. 14400 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2022-12-13 22:00:11,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:00:11,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649588429] [2022-12-13 22:00:11,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649588429] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:00:11,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451635550] [2022-12-13 22:00:11,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:00:11,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:00:11,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:00:11,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:00:11,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 22:00:12,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:00:12,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:00:12,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 22:00:12,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:00:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18244 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 14400 trivial. 0 not checked. [2022-12-13 22:00:14,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:00:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18244 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 14400 trivial. 0 not checked. [2022-12-13 22:00:19,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451635550] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:00:19,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:00:19,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 65, 65] total 249 [2022-12-13 22:00:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055773613] [2022-12-13 22:00:19,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:00:19,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 249 states [2022-12-13 22:00:19,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:00:19,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 249 interpolants. [2022-12-13 22:00:19,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15630, Invalid=46122, Unknown=0, NotChecked=0, Total=61752 [2022-12-13 22:00:19,419 INFO L87 Difference]: Start difference. First operand 376 states and 378 transitions. Second operand has 249 states, 249 states have (on average 2.036144578313253) internal successors, (507), 249 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:00:20,142 INFO L93 Difference]: Finished difference Result 640 states and 708 transitions. [2022-12-13 22:00:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2022-12-13 22:00:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 249 states, 249 states have (on average 2.036144578313253) internal successors, (507), 249 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2022-12-13 22:00:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:00:20,144 INFO L225 Difference]: With dead ends: 640 [2022-12-13 22:00:20,144 INFO L226 Difference]: Without dead ends: 507 [2022-12-13 22:00:20,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15120 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=15630, Invalid=46122, Unknown=0, NotChecked=0, Total=61752 [2022-12-13 22:00:20,147 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:00:20,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:00:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-12-13 22:00:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 506. [2022-12-13 22:00:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.005940594059406) internal successors, (508), 505 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 508 transitions. [2022-12-13 22:00:20,157 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 508 transitions. Word has length 373 [2022-12-13 22:00:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:00:20,157 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 508 transitions. [2022-12-13 22:00:20,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 249 states, 249 states have (on average 2.036144578313253) internal successors, (507), 249 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 508 transitions. [2022-12-13 22:00:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-12-13 22:00:20,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:00:20,160 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 121, 121, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:00:20,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 22:00:20,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 22:00:20,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:00:20,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:00:20,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1405116249, now seen corresponding path program 11 times [2022-12-13 22:00:20,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:00:20,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789088849] [2022-12-13 22:00:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:00:20,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:00:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:00:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30517 backedges. 0 proven. 14641 refuted. 0 times theorem prover too weak. 15876 trivial. 0 not checked. [2022-12-13 22:00:28,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:00:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789088849] [2022-12-13 22:00:28,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789088849] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:00:28,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201050387] [2022-12-13 22:00:28,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:00:28,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:00:28,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:00:28,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:00:28,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b198731-9972-42d1-8dd1-9fe680864749/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process