./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/in-de61.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/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_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/in-de61.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/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_33dad594-e78f-426c-8210-9b3a8b1924d3/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 49b7efdcf8f4d6c873493bd370328870547a88b20d287c5de5342268b0966917 --- 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 22:06:58,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:06:58,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:06:58,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:06:58,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:06:58,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:06:58,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:06:58,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:06:58,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:06:58,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:06:58,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:06:58,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:06:58,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:06:58,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:06:58,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:06:58,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:06:58,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:06:58,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:06:58,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:06:58,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:06:58,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:06:58,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:06:58,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:06:58,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:06:58,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:06:58,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:06:58,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:06:58,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:06:58,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:06:58,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:06:58,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:06:58,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:06:58,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:06:58,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:06:58,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:06:58,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:06:58,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:06:58,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:06:58,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:06:58,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:06:58,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:06:58,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:06:58,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:06:58,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:06:58,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:06:58,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:06:58,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:06:58,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:06:58,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:06:58,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:06:58,764 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:06:58,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:06:58,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:06:58,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:06:58,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:06:58,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:06:58,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:06:58,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:06:58,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:06:58,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:06:58,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:06:58,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:06:58,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:06:58,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:06:58,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:06:58,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:06:58,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:06:58,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:06:58,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:06:58,768 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:06:58,769 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_33dad594-e78f-426c-8210-9b3a8b1924d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49b7efdcf8f4d6c873493bd370328870547a88b20d287c5de5342268b0966917 [2022-12-13 22:06:58,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:06:58,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:06:58,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:06:58,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:06:58,976 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:06:58,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loops-crafted-1/in-de61.c [2022-12-13 22:07:01,528 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:07:01,659 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:07:01,660 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/sv-benchmarks/c/loops-crafted-1/in-de61.c [2022-12-13 22:07:01,664 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/data/ce14f4b59/646522043cf14419a521b2dbee22a0aa/FLAGb26ee3ac6 [2022-12-13 22:07:02,090 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/data/ce14f4b59/646522043cf14419a521b2dbee22a0aa [2022-12-13 22:07:02,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:07:02,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:07:02,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:07:02,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:07:02,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:07:02,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0b4770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02, skipping insertion in model container [2022-12-13 22:07:02,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:07:02,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:07:02,213 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_33dad594-e78f-426c-8210-9b3a8b1924d3/sv-benchmarks/c/loops-crafted-1/in-de61.c[368,381] [2022-12-13 22:07:02,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:07:02,230 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:07:02,238 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_33dad594-e78f-426c-8210-9b3a8b1924d3/sv-benchmarks/c/loops-crafted-1/in-de61.c[368,381] [2022-12-13 22:07:02,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:07:02,250 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:07:02,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02 WrapperNode [2022-12-13 22:07:02,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:07:02,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:07:02,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:07:02,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:07:02,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,273 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2022-12-13 22:07:02,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:07:02,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:07:02,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:07:02,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:07:02,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:07:02,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:07:02,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:07:02,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:07:02,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (1/1) ... [2022-12-13 22:07:02,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:07:02,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:02,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:07:02,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:07:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:07:02,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:07:02,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:07:02,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:07:02,392 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:07:02,394 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:07:02,486 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:07:02,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:07:02,492 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 22:07:02,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:07:02 BoogieIcfgContainer [2022-12-13 22:07:02,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:07:02,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:07:02,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:07:02,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:07:02,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:07:02" (1/3) ... [2022-12-13 22:07:02,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602c30a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:07:02, skipping insertion in model container [2022-12-13 22:07:02,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:07:02" (2/3) ... [2022-12-13 22:07:02,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602c30a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:07:02, skipping insertion in model container [2022-12-13 22:07:02,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:07:02" (3/3) ... [2022-12-13 22:07:02,503 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de61.c [2022-12-13 22:07:02,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:07:02,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:07:02,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:07:02,567 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;@5ecd6da5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:07:02,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:07:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 22:07:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:07:02,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:02,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:02,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:02,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1928996963, now seen corresponding path program 1 times [2022-12-13 22:07:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:02,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791179673] [2022-12-13 22:07:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:02,698 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 22:07:02,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:02,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791179673] [2022-12-13 22:07:02,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791179673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:07:02,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:07:02,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:07:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104371396] [2022-12-13 22:07:02,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:07:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 22:07:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 22:07:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:07:02,727 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 22:07:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:02,739 INFO L93 Difference]: Finished difference Result 31 states and 53 transitions. [2022-12-13 22:07:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 22:07:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-12-13 22:07:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:02,746 INFO L225 Difference]: With dead ends: 31 [2022-12-13 22:07:02,746 INFO L226 Difference]: Without dead ends: 13 [2022-12-13 22:07:02,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:07:02,750 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:07:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-13 22:07:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-13 22:07:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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 22:07:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2022-12-13 22:07:02,773 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 12 [2022-12-13 22:07:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:02,773 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-12-13 22:07:02,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 22:07:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2022-12-13 22:07:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:07:02,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:02,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:02,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:07:02,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:02,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1814480359, now seen corresponding path program 1 times [2022-12-13 22:07:02,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:02,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714386184] [2022-12-13 22:07:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:03,162 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 22:07:03,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714386184] [2022-12-13 22:07:03,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714386184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:07:03,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:07:03,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:07:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884706222] [2022-12-13 22:07:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:07:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:07:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:07:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:07:03,165 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 22:07:03,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:03,297 INFO L93 Difference]: Finished difference Result 31 states and 46 transitions. [2022-12-13 22:07:03,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:07:03,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2022-12-13 22:07:03,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:03,298 INFO L225 Difference]: With dead ends: 31 [2022-12-13 22:07:03,298 INFO L226 Difference]: Without dead ends: 14 [2022-12-13 22:07:03,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:07:03,299 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:03,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:07:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-13 22:07:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-13 22:07:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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 22:07:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2022-12-13 22:07:03,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 12 [2022-12-13 22:07:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:03,303 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-12-13 22:07:03,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 22:07:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2022-12-13 22:07:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 22:07:03,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:03,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:07:03,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1427170164, now seen corresponding path program 1 times [2022-12-13 22:07:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:03,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130385032] [2022-12-13 22:07:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:03,368 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 22:07:03,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130385032] [2022-12-13 22:07:03,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130385032] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212760137] [2022-12-13 22:07:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:03,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:03,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:03,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:07:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:03,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:07:03,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:03,474 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 22:07:03,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:03,509 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 22:07:03,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212760137] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:03,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:03,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-12-13 22:07:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022796219] [2022-12-13 22:07:03,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:07:03,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:07:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:07:03,511 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 22:07:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:03,653 INFO L93 Difference]: Finished difference Result 58 states and 94 transitions. [2022-12-13 22:07:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:07:03,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 22:07:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:03,655 INFO L225 Difference]: With dead ends: 58 [2022-12-13 22:07:03,655 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 22:07:03,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:07:03,657 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:03,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 62 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:07:03,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 22:07:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2022-12-13 22:07:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 36 states have internal predecessors, (55), 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 22:07:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 55 transitions. [2022-12-13 22:07:03,673 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 55 transitions. Word has length 13 [2022-12-13 22:07:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:03,673 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 55 transitions. [2022-12-13 22:07:03,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 22:07:03,674 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2022-12-13 22:07:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 22:07:03,674 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:03,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:03,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:07:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:03,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash -603304611, now seen corresponding path program 1 times [2022-12-13 22:07:03,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:03,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17136393] [2022-12-13 22:07:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:03,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:03,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17136393] [2022-12-13 22:07:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17136393] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:03,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883838183] [2022-12-13 22:07:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:03,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:03,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:03,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:03,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:07:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:04,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:07:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:07:04,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:07:04,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883838183] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:04,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:04,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 9 [2022-12-13 22:07:04,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959749022] [2022-12-13 22:07:04,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:04,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:07:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:07:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:07:04,071 INFO L87 Difference]: Start difference. First operand 37 states and 55 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 22:07:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:04,278 INFO L93 Difference]: Finished difference Result 107 states and 151 transitions. [2022-12-13 22:07:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:07:04,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 15 [2022-12-13 22:07:04,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:04,279 INFO L225 Difference]: With dead ends: 107 [2022-12-13 22:07:04,280 INFO L226 Difference]: Without dead ends: 87 [2022-12-13 22:07:04,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:07:04,281 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:04,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 95 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:07:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-13 22:07:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2022-12-13 22:07:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 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 22:07:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2022-12-13 22:07:04,294 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 15 [2022-12-13 22:07:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:04,294 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2022-12-13 22:07:04,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 22:07:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2022-12-13 22:07:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 22:07:04,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:04,295 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:04,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:07:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:04,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash 114935591, now seen corresponding path program 2 times [2022-12-13 22:07:04,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:04,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778257372] [2022-12-13 22:07:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:04,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:04,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:04,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778257372] [2022-12-13 22:07:04,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778257372] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:04,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500951362] [2022-12-13 22:07:04,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:07:04,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:04,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:04,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:04,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:07:04,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:07:04,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:04,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 22:07:04,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:04,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:04,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500951362] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:04,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:04,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-12-13 22:07:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757308195] [2022-12-13 22:07:04,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:04,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:07:04,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:07:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:07:04,855 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 22:07:05,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:05,840 INFO L93 Difference]: Finished difference Result 188 states and 307 transitions. [2022-12-13 22:07:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 22:07:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 16 [2022-12-13 22:07:05,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:05,841 INFO L225 Difference]: With dead ends: 188 [2022-12-13 22:07:05,841 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 22:07:05,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=691, Unknown=0, NotChecked=0, Total=992 [2022-12-13 22:07:05,843 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 305 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:05,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 169 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:07:05,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 22:07:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 106. [2022-12-13 22:07:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.4952380952380953) internal successors, (157), 105 states have internal predecessors, (157), 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 22:07:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 157 transitions. [2022-12-13 22:07:05,865 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 157 transitions. Word has length 16 [2022-12-13 22:07:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:05,865 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 157 transitions. [2022-12-13 22:07:05,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 22:07:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 157 transitions. [2022-12-13 22:07:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 22:07:05,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:05,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:05,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:07:06,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:06,068 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash 188466470, now seen corresponding path program 1 times [2022-12-13 22:07:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:06,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141130394] [2022-12-13 22:07:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:06,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:07:06,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:06,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141130394] [2022-12-13 22:07:06,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141130394] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:06,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964983807] [2022-12-13 22:07:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:06,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:06,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:06,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:06,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:07:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:06,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 22:07:06,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:06,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:07:06,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964983807] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:06,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:06,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 22 [2022-12-13 22:07:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776820413] [2022-12-13 22:07:06,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:06,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 22:07:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 22:07:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:07:06,960 INFO L87 Difference]: Start difference. First operand 106 states and 157 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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 22:07:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:08,896 INFO L93 Difference]: Finished difference Result 212 states and 300 transitions. [2022-12-13 22:07:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 22:07:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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 18 [2022-12-13 22:07:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:08,899 INFO L225 Difference]: With dead ends: 212 [2022-12-13 22:07:08,899 INFO L226 Difference]: Without dead ends: 200 [2022-12-13 22:07:08,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=444, Invalid=1812, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 22:07:08,901 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 138 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:08,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 73 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 22:07:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-12-13 22:07:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2022-12-13 22:07:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.5423728813559323) internal successors, (182), 118 states have internal predecessors, (182), 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 22:07:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 182 transitions. [2022-12-13 22:07:08,933 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 182 transitions. Word has length 18 [2022-12-13 22:07:08,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:08,933 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 182 transitions. [2022-12-13 22:07:08,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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 22:07:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 182 transitions. [2022-12-13 22:07:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 22:07:08,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:08,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:08,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:07:09,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 22:07:09,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash 748617255, now seen corresponding path program 2 times [2022-12-13 22:07:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266588863] [2022-12-13 22:07:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:09,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:09,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:09,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266588863] [2022-12-13 22:07:09,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266588863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:09,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722591691] [2022-12-13 22:07:09,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:07:09,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:09,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:09,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:09,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:07:09,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:07:09,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:09,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 22:07:09,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:07:09,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:07:09,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722591691] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:09,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:09,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2022-12-13 22:07:09,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414489992] [2022-12-13 22:07:09,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:09,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:07:09,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:07:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:07:09,312 INFO L87 Difference]: Start difference. First operand 119 states and 182 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 22:07:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:09,961 INFO L93 Difference]: Finished difference Result 341 states and 489 transitions. [2022-12-13 22:07:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 22:07:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 18 [2022-12-13 22:07:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:09,963 INFO L225 Difference]: With dead ends: 341 [2022-12-13 22:07:09,963 INFO L226 Difference]: Without dead ends: 301 [2022-12-13 22:07:09,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 22:07:09,965 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 201 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:09,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 122 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:07:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-12-13 22:07:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 150. [2022-12-13 22:07:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.5100671140939597) internal successors, (225), 149 states have internal predecessors, (225), 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 22:07:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 225 transitions. [2022-12-13 22:07:10,028 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 225 transitions. Word has length 18 [2022-12-13 22:07:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:10,028 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 225 transitions. [2022-12-13 22:07:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 22:07:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 225 transitions. [2022-12-13 22:07:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 22:07:10,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:10,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:10,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:07:10,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:10,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1346970424, now seen corresponding path program 2 times [2022-12-13 22:07:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:10,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871076280] [2022-12-13 22:07:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:10,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:07:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871076280] [2022-12-13 22:07:10,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871076280] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:10,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502691854] [2022-12-13 22:07:10,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:07:10,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:10,376 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:10,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:07:10,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:07:10,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:10,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:07:10,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:07:10,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:07:10,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502691854] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:10,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:10,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-12-13 22:07:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963477487] [2022-12-13 22:07:10,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:10,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:07:10,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:07:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:07:10,457 INFO L87 Difference]: Start difference. First operand 150 states and 225 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 22:07:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:10,534 INFO L93 Difference]: Finished difference Result 245 states and 367 transitions. [2022-12-13 22:07:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:07:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 20 [2022-12-13 22:07:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:10,535 INFO L225 Difference]: With dead ends: 245 [2022-12-13 22:07:10,535 INFO L226 Difference]: Without dead ends: 183 [2022-12-13 22:07:10,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:07:10,536 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 54 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:07:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-13 22:07:10,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 147. [2022-12-13 22:07:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4794520547945205) internal successors, (216), 146 states have internal predecessors, (216), 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 22:07:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 216 transitions. [2022-12-13 22:07:10,590 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 216 transitions. Word has length 20 [2022-12-13 22:07:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:10,591 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 216 transitions. [2022-12-13 22:07:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 22:07:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 216 transitions. [2022-12-13 22:07:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 22:07:10,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:10,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:10,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:07:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:10,794 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 48319293, now seen corresponding path program 1 times [2022-12-13 22:07:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:10,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717523895] [2022-12-13 22:07:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:10,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 22:07:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717523895] [2022-12-13 22:07:10,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717523895] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:10,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106371427] [2022-12-13 22:07:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:10,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:10,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:10,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:10,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:07:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:11,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 22:07:11,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 22:07:11,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 22:07:11,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106371427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:11,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:11,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 14 [2022-12-13 22:07:11,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713714644] [2022-12-13 22:07:11,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:07:11,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:11,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:07:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:07:11,123 INFO L87 Difference]: Start difference. First operand 147 states and 216 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 22:07:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:11,409 INFO L93 Difference]: Finished difference Result 235 states and 339 transitions. [2022-12-13 22:07:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 22:07:11,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 21 [2022-12-13 22:07:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:11,410 INFO L225 Difference]: With dead ends: 235 [2022-12-13 22:07:11,410 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 22:07:11,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:07:11,411 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 62 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:11,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 127 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:07:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 22:07:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 143. [2022-12-13 22:07:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4859154929577465) internal successors, (211), 142 states have internal predecessors, (211), 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 22:07:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 211 transitions. [2022-12-13 22:07:11,460 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 211 transitions. Word has length 21 [2022-12-13 22:07:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:11,460 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 211 transitions. [2022-12-13 22:07:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 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 22:07:11,460 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 211 transitions. [2022-12-13 22:07:11,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 22:07:11,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:11,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:11,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:07:11,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 22:07:11,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1411583389, now seen corresponding path program 3 times [2022-12-13 22:07:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:11,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815342862] [2022-12-13 22:07:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:11,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:11,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815342862] [2022-12-13 22:07:11,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815342862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:11,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275096517] [2022-12-13 22:07:11,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:07:11,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:11,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:11,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:11,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:07:11,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 22:07:11,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:11,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 22:07:11,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:07:11,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:07:11,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275096517] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:11,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:11,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 15 [2022-12-13 22:07:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291262465] [2022-12-13 22:07:11,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:11,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:07:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:07:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:07:11,972 INFO L87 Difference]: Start difference. First operand 143 states and 211 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 22:07:13,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:13,619 INFO L93 Difference]: Finished difference Result 414 states and 573 transitions. [2022-12-13 22:07:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-13 22:07:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 21 [2022-12-13 22:07:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:13,620 INFO L225 Difference]: With dead ends: 414 [2022-12-13 22:07:13,620 INFO L226 Difference]: Without dead ends: 378 [2022-12-13 22:07:13,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=4446, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 22:07:13,622 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 269 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:13,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 248 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 22:07:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-13 22:07:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 167. [2022-12-13 22:07:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4879518072289157) internal successors, (247), 166 states have internal predecessors, (247), 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 22:07:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 247 transitions. [2022-12-13 22:07:13,671 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 247 transitions. Word has length 21 [2022-12-13 22:07:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:13,671 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 247 transitions. [2022-12-13 22:07:13,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 22:07:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 247 transitions. [2022-12-13 22:07:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 22:07:13,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:13,671 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:13,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:07:13,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:13,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:13,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:13,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1195101891, now seen corresponding path program 2 times [2022-12-13 22:07:13,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:13,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313752708] [2022-12-13 22:07:13,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:07:13,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:13,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313752708] [2022-12-13 22:07:13,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313752708] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:13,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798542467] [2022-12-13 22:07:13,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:07:13,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:13,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:13,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:13,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:07:14,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:07:14,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:14,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 22:07:14,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:07:14,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 22:07:14,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798542467] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:14,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:14,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 4] total 13 [2022-12-13 22:07:14,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387756969] [2022-12-13 22:07:14,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:14,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:07:14,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:07:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:07:14,116 INFO L87 Difference]: Start difference. First operand 167 states and 247 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 22:07:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:14,688 INFO L93 Difference]: Finished difference Result 311 states and 463 transitions. [2022-12-13 22:07:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 22:07:14,688 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 21 [2022-12-13 22:07:14,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:14,689 INFO L225 Difference]: With dead ends: 311 [2022-12-13 22:07:14,689 INFO L226 Difference]: Without dead ends: 285 [2022-12-13 22:07:14,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-12-13 22:07:14,690 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:14,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 230 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:07:14,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-12-13 22:07:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 211. [2022-12-13 22:07:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4714285714285715) internal successors, (309), 210 states have internal predecessors, (309), 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 22:07:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 309 transitions. [2022-12-13 22:07:14,758 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 309 transitions. Word has length 21 [2022-12-13 22:07:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:14,758 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 309 transitions. [2022-12-13 22:07:14,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 22:07:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 309 transitions. [2022-12-13 22:07:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 22:07:14,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:14,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:14,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 22:07:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 22:07:14,961 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1372519271, now seen corresponding path program 3 times [2022-12-13 22:07:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:14,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271454326] [2022-12-13 22:07:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 22:07:15,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:15,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271454326] [2022-12-13 22:07:15,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271454326] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:15,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3707044] [2022-12-13 22:07:15,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:07:15,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:15,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:15,053 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:15,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 22:07:15,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 22:07:15,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:15,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 22:07:15,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 22:07:15,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 22:07:15,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3707044] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:15,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:15,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-12-13 22:07:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481915991] [2022-12-13 22:07:15,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:15,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:07:15,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:07:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:07:15,144 INFO L87 Difference]: Start difference. First operand 211 states and 309 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 22:07:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:15,340 INFO L93 Difference]: Finished difference Result 320 states and 450 transitions. [2022-12-13 22:07:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:07:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 22 [2022-12-13 22:07:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:15,342 INFO L225 Difference]: With dead ends: 320 [2022-12-13 22:07:15,342 INFO L226 Difference]: Without dead ends: 308 [2022-12-13 22:07:15,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:07:15,342 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:15,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 74 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:07:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-13 22:07:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 228. [2022-12-13 22:07:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.4449339207048457) internal successors, (328), 227 states have internal predecessors, (328), 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 22:07:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2022-12-13 22:07:15,422 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 22 [2022-12-13 22:07:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:15,422 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2022-12-13 22:07:15,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 22:07:15,422 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2022-12-13 22:07:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 22:07:15,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:15,423 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:15,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 22:07:15,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:15,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1486463737, now seen corresponding path program 3 times [2022-12-13 22:07:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:15,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284037527] [2022-12-13 22:07:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:15,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284037527] [2022-12-13 22:07:15,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284037527] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:15,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365246943] [2022-12-13 22:07:15,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:07:15,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:15,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:15,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:15,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 22:07:15,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 22:07:15,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:15,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 22:07:15,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:15,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:16,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365246943] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:16,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:16,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-12-13 22:07:16,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495152673] [2022-12-13 22:07:16,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 22:07:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 22:07:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-12-13 22:07:16,127 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 22:07:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:33,807 INFO L93 Difference]: Finished difference Result 808 states and 1306 transitions. [2022-12-13 22:07:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-13 22:07:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 22 [2022-12-13 22:07:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:33,810 INFO L225 Difference]: With dead ends: 808 [2022-12-13 22:07:33,810 INFO L226 Difference]: Without dead ends: 736 [2022-12-13 22:07:33,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=1363, Invalid=3058, Unknown=1, NotChecked=0, Total=4422 [2022-12-13 22:07:33,811 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1351 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:33,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 686 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 22:07:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-12-13 22:07:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 347. [2022-12-13 22:07:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.5057803468208093) internal successors, (521), 346 states have internal predecessors, (521), 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 22:07:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 521 transitions. [2022-12-13 22:07:33,952 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 521 transitions. Word has length 22 [2022-12-13 22:07:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:33,952 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 521 transitions. [2022-12-13 22:07:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 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 22:07:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 521 transitions. [2022-12-13 22:07:33,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 22:07:33,952 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:33,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:33,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 22:07:34,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 22:07:34,154 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash -11866489, now seen corresponding path program 4 times [2022-12-13 22:07:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:34,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604705356] [2022-12-13 22:07:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:34,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:07:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604705356] [2022-12-13 22:07:34,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604705356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054929865] [2022-12-13 22:07:34,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:07:34,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:34,521 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:34,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 22:07:34,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:07:34,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:34,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 22:07:34,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:07:34,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:07:35,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054929865] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:35,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:35,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 10] total 30 [2022-12-13 22:07:35,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421548655] [2022-12-13 22:07:35,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:35,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-13 22:07:35,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:35,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-13 22:07:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2022-12-13 22:07:35,132 INFO L87 Difference]: Start difference. First operand 347 states and 521 transitions. Second operand has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 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 22:07:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:36,309 INFO L93 Difference]: Finished difference Result 445 states and 632 transitions. [2022-12-13 22:07:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 22:07:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 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 24 [2022-12-13 22:07:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:36,311 INFO L225 Difference]: With dead ends: 445 [2022-12-13 22:07:36,312 INFO L226 Difference]: Without dead ends: 360 [2022-12-13 22:07:36,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=316, Invalid=1754, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 22:07:36,313 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 49 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:36,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 80 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 22:07:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-12-13 22:07:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 317. [2022-12-13 22:07:36,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.4841772151898733) internal successors, (469), 316 states have internal predecessors, (469), 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 22:07:36,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 469 transitions. [2022-12-13 22:07:36,455 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 469 transitions. Word has length 24 [2022-12-13 22:07:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:36,456 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 469 transitions. [2022-12-13 22:07:36,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 30 states have internal predecessors, (64), 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 22:07:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 469 transitions. [2022-12-13 22:07:36,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 22:07:36,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:36,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:36,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 22:07:36,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 22:07:36,657 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash -147642777, now seen corresponding path program 4 times [2022-12-13 22:07:36,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:36,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598831484] [2022-12-13 22:07:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:36,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:36,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598831484] [2022-12-13 22:07:36,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598831484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101302500] [2022-12-13 22:07:36,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:07:36,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:36,809 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:36,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 22:07:36,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:07:36,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:36,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 22:07:36,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:07:36,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:07:36,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101302500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:36,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:36,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 18 [2022-12-13 22:07:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621082621] [2022-12-13 22:07:36,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 22:07:36,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:36,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 22:07:36,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-12-13 22:07:36,944 INFO L87 Difference]: Start difference. First operand 317 states and 469 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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 22:07:40,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:40,712 INFO L93 Difference]: Finished difference Result 868 states and 1229 transitions. [2022-12-13 22:07:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-12-13 22:07:40,712 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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 24 [2022-12-13 22:07:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:40,714 INFO L225 Difference]: With dead ends: 868 [2022-12-13 22:07:40,714 INFO L226 Difference]: Without dead ends: 794 [2022-12-13 22:07:40,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3709 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=926, Invalid=9994, Unknown=0, NotChecked=0, Total=10920 [2022-12-13 22:07:40,716 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 430 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:40,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 320 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:07:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-12-13 22:07:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 365. [2022-12-13 22:07:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.4945054945054945) internal successors, (544), 364 states have internal predecessors, (544), 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 22:07:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 544 transitions. [2022-12-13 22:07:40,900 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 544 transitions. Word has length 24 [2022-12-13 22:07:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:40,900 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 544 transitions. [2022-12-13 22:07:40,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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 22:07:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 544 transitions. [2022-12-13 22:07:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 22:07:40,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:40,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:40,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 22:07:41,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 22:07:41,102 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:41,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:41,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1999602746, now seen corresponding path program 5 times [2022-12-13 22:07:41,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:41,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305914385] [2022-12-13 22:07:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:41,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 22:07:41,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:41,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305914385] [2022-12-13 22:07:41,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305914385] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:41,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208688393] [2022-12-13 22:07:41,231 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:07:41,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:41,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:41,232 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:41,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 22:07:41,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 22:07:41,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:41,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 22:07:41,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 22:07:41,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 22:07:41,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208688393] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:41,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:41,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 12 [2022-12-13 22:07:41,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338965322] [2022-12-13 22:07:41,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:41,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:07:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:07:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:07:41,400 INFO L87 Difference]: Start difference. First operand 365 states and 544 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 22:07:41,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:07:41,908 INFO L93 Difference]: Finished difference Result 614 states and 883 transitions. [2022-12-13 22:07:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:07:41,909 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 26 [2022-12-13 22:07:41,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:07:41,910 INFO L225 Difference]: With dead ends: 614 [2022-12-13 22:07:41,910 INFO L226 Difference]: Without dead ends: 587 [2022-12-13 22:07:41,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:07:41,911 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 121 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:07:41,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 145 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:07:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-12-13 22:07:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 368. [2022-12-13 22:07:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.4822888283378746) internal successors, (544), 367 states have internal predecessors, (544), 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 22:07:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 544 transitions. [2022-12-13 22:07:42,148 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 544 transitions. Word has length 26 [2022-12-13 22:07:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:07:42,148 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 544 transitions. [2022-12-13 22:07:42,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 22:07:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 544 transitions. [2022-12-13 22:07:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 22:07:42,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:07:42,149 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:07:42,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 22:07:42,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 22:07:42,350 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:07:42,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:07:42,351 INFO L85 PathProgramCache]: Analyzing trace with hash -833380899, now seen corresponding path program 5 times [2022-12-13 22:07:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:07:42,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56420625] [2022-12-13 22:07:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:07:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:07:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:07:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:42,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:07:42,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56420625] [2022-12-13 22:07:42,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56420625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:07:42,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643341556] [2022-12-13 22:07:42,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:07:42,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:07:42,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:07:42,568 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:07:42,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 22:07:42,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 22:07:42,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:07:42,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 22:07:42,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:07:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:42,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:07:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:07:43,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643341556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:07:43,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:07:43,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 14] total 33 [2022-12-13 22:07:43,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65247224] [2022-12-13 22:07:43,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:07:43,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 22:07:43,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:07:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 22:07:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 22:07:43,089 INFO L87 Difference]: Start difference. First operand 368 states and 544 transitions. Second operand has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 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 22:08:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:08:08,294 INFO L93 Difference]: Finished difference Result 1121 states and 1646 transitions. [2022-12-13 22:08:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-12-13 22:08:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 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 27 [2022-12-13 22:08:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:08:08,296 INFO L225 Difference]: With dead ends: 1121 [2022-12-13 22:08:08,297 INFO L226 Difference]: Without dead ends: 1044 [2022-12-13 22:08:08,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17148 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=8385, Invalid=34257, Unknown=0, NotChecked=0, Total=42642 [2022-12-13 22:08:08,302 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1123 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:08:08,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 576 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 22:08:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2022-12-13 22:08:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 436. [2022-12-13 22:08:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.4896551724137932) internal successors, (648), 435 states have internal predecessors, (648), 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 22:08:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 648 transitions. [2022-12-13 22:08:08,578 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 648 transitions. Word has length 27 [2022-12-13 22:08:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:08:08,578 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 648 transitions. [2022-12-13 22:08:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 33 states have internal predecessors, (61), 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 22:08:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 648 transitions. [2022-12-13 22:08:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 22:08:08,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:08:08,579 INFO L195 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:08:08,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 22:08:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 22:08:08,780 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:08:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:08:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash 83199046, now seen corresponding path program 6 times [2022-12-13 22:08:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:08:08,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162863117] [2022-12-13 22:08:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:08:08,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:08:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:08:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 22:08:08,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:08:08,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162863117] [2022-12-13 22:08:08,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162863117] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:08:08,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519156707] [2022-12-13 22:08:08,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 22:08:08,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:08:08,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:08:08,982 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:08:08,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 22:08:09,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-13 22:08:09,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:08:09,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 22:08:09,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:08:09,111 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:08:09,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:08:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:08:09,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519156707] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:08:09,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:08:09,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-12-13 22:08:09,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699970845] [2022-12-13 22:08:09,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:08:09,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 22:08:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:08:09,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 22:08:09,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-12-13 22:08:09,370 INFO L87 Difference]: Start difference. First operand 436 states and 648 transitions. Second operand has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 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 22:09:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:09:33,078 INFO L93 Difference]: Finished difference Result 1129 states and 1780 transitions. [2022-12-13 22:09:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-12-13 22:09:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 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 28 [2022-12-13 22:09:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:09:33,081 INFO L225 Difference]: With dead ends: 1129 [2022-12-13 22:09:33,081 INFO L226 Difference]: Without dead ends: 983 [2022-12-13 22:09:33,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6738 ImplicationChecksByTransitivity, 73.5s TimeCoverageRelationStatistics Valid=4719, Invalid=13103, Unknown=0, NotChecked=0, Total=17822 [2022-12-13 22:09:33,082 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1366 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:09:33,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 885 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [912 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-13 22:09:33,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-12-13 22:09:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 487. [2022-12-13 22:09:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.4835390946502058) internal successors, (721), 486 states have internal predecessors, (721), 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 22:09:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 721 transitions. [2022-12-13 22:09:33,434 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 721 transitions. Word has length 28 [2022-12-13 22:09:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:09:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 721 transitions. [2022-12-13 22:09:33,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 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 22:09:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 721 transitions. [2022-12-13 22:09:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 22:09:33,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:09:33,435 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:33,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 22:09:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 22:09:33,636 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:09:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 796082573, now seen corresponding path program 6 times [2022-12-13 22:09:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:33,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050924452] [2022-12-13 22:09:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 22:09:33,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:33,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050924452] [2022-12-13 22:09:33,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050924452] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:33,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638660834] [2022-12-13 22:09:33,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 22:09:33,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:33,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:33,803 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:33,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 22:09:33,881 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 22:09:33,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:09:33,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 22:09:33,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 22:09:33,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 22:09:34,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638660834] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:34,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:34,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2022-12-13 22:09:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926187547] [2022-12-13 22:09:34,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 22:09:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 22:09:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 22:09:34,244 INFO L87 Difference]: Start difference. First operand 487 states and 721 transitions. Second operand has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 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 22:09:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:09:46,132 INFO L93 Difference]: Finished difference Result 873 states and 1250 transitions. [2022-12-13 22:09:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-12-13 22:09:46,133 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 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 29 [2022-12-13 22:09:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:09:46,134 INFO L225 Difference]: With dead ends: 873 [2022-12-13 22:09:46,134 INFO L226 Difference]: Without dead ends: 718 [2022-12-13 22:09:46,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5866 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1175, Invalid=16647, Unknown=0, NotChecked=0, Total=17822 [2022-12-13 22:09:46,136 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 350 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:09:46,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 369 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 22:09:46,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-12-13 22:09:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 540. [2022-12-13 22:09:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.4526901669758812) internal successors, (783), 539 states have internal predecessors, (783), 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 22:09:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 783 transitions. [2022-12-13 22:09:46,556 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 783 transitions. Word has length 29 [2022-12-13 22:09:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:09:46,556 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 783 transitions. [2022-12-13 22:09:46,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 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 22:09:46,556 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 783 transitions. [2022-12-13 22:09:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 22:09:46,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:09:46,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:09:46,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 22:09:46,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:46,758 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:09:46,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:09:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1004492410, now seen corresponding path program 7 times [2022-12-13 22:09:46,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:09:46,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733312568] [2022-12-13 22:09:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:09:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:09:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:09:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:09:47,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733312568] [2022-12-13 22:09:47,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733312568] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:09:47,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376015833] [2022-12-13 22:09:47,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 22:09:47,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:09:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:09:47,236 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:09:47,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 22:09:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:09:47,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 22:09:47,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:09:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:51,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:09:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:09:52,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376015833] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:09:52,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:09:52,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 21] total 48 [2022-12-13 22:09:52,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404115316] [2022-12-13 22:09:52,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:09:52,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 22:09:52,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:09:52,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 22:09:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1935, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 22:09:52,186 INFO L87 Difference]: Start difference. First operand 540 states and 783 transitions. Second operand has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 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 22:10:00,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:10:00,758 INFO L93 Difference]: Finished difference Result 905 states and 1218 transitions. [2022-12-13 22:10:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-13 22:10:00,759 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 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 30 [2022-12-13 22:10:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:10:00,760 INFO L225 Difference]: With dead ends: 905 [2022-12-13 22:10:00,760 INFO L226 Difference]: Without dead ends: 791 [2022-12-13 22:10:00,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2685 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1342, Invalid=7588, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 22:10:00,761 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 390 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:10:00,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 180 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 22:10:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-12-13 22:10:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 542. [2022-12-13 22:10:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 1.4399260628465804) internal successors, (779), 541 states have internal predecessors, (779), 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 22:10:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 779 transitions. [2022-12-13 22:10:01,201 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 779 transitions. Word has length 30 [2022-12-13 22:10:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:10:01,201 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 779 transitions. [2022-12-13 22:10:01,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.6875) internal successors, (81), 48 states have internal predecessors, (81), 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 22:10:01,201 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 779 transitions. [2022-12-13 22:10:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 22:10:01,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:10:01,202 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:01,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 22:10:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:01,403 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:10:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1893940903, now seen corresponding path program 7 times [2022-12-13 22:10:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:01,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951547221] [2022-12-13 22:10:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:10:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:01,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951547221] [2022-12-13 22:10:01,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951547221] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:01,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541714217] [2022-12-13 22:10:01,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 22:10:01,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:01,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:01,620 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:01,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 22:10:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:01,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 22:10:01,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 22:10:01,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 22:10:01,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541714217] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:01,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:01,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 24 [2022-12-13 22:10:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17439615] [2022-12-13 22:10:01,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 22:10:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 22:10:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2022-12-13 22:10:01,821 INFO L87 Difference]: Start difference. First operand 542 states and 779 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 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 22:10:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:10:25,268 INFO L93 Difference]: Finished difference Result 1523 states and 2069 transitions. [2022-12-13 22:10:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-12-13 22:10:25,268 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 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 30 [2022-12-13 22:10:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:10:25,272 INFO L225 Difference]: With dead ends: 1523 [2022-12-13 22:10:25,272 INFO L226 Difference]: Without dead ends: 1438 [2022-12-13 22:10:25,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23414 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=3138, Invalid=54702, Unknown=0, NotChecked=0, Total=57840 [2022-12-13 22:10:25,276 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 912 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:10:25,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 571 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 3188 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 22:10:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-12-13 22:10:25,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 610. [2022-12-13 22:10:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.451559934318555) internal successors, (884), 609 states have internal predecessors, (884), 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 22:10:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 884 transitions. [2022-12-13 22:10:25,887 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 884 transitions. Word has length 30 [2022-12-13 22:10:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:10:25,888 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 884 transitions. [2022-12-13 22:10:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 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 22:10:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 884 transitions. [2022-12-13 22:10:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 22:10:25,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:10:25,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:25,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 22:10:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 22:10:26,089 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:10:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 380203431, now seen corresponding path program 8 times [2022-12-13 22:10:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520320127] [2022-12-13 22:10:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 22:10:26,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:26,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520320127] [2022-12-13 22:10:26,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520320127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:26,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95213844] [2022-12-13 22:10:26,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:10:26,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:26,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:26,272 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:26,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 22:10:26,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:10:26,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:10:26,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 22:10:26,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:10:26,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:26,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:10:26,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95213844] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:26,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:26,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 15 [2022-12-13 22:10:26,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471802845] [2022-12-13 22:10:26,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:26,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:10:26,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:10:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:10:26,416 INFO L87 Difference]: Start difference. First operand 610 states and 884 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 22:10:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:10:28,190 INFO L93 Difference]: Finished difference Result 1052 states and 1464 transitions. [2022-12-13 22:10:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 22:10:28,190 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 32 [2022-12-13 22:10:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:10:28,193 INFO L225 Difference]: With dead ends: 1052 [2022-12-13 22:10:28,193 INFO L226 Difference]: Without dead ends: 1010 [2022-12-13 22:10:28,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:10:28,194 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 171 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:10:28,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 243 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:10:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-12-13 22:10:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 617. [2022-12-13 22:10:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.4448051948051948) internal successors, (890), 616 states have internal predecessors, (890), 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 22:10:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 890 transitions. [2022-12-13 22:10:28,832 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 890 transitions. Word has length 32 [2022-12-13 22:10:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:10:28,832 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 890 transitions. [2022-12-13 22:10:28,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 22:10:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 890 transitions. [2022-12-13 22:10:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 22:10:28,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:10:28,833 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:28,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 22:10:29,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 22:10:29,034 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:10:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:29,035 INFO L85 PathProgramCache]: Analyzing trace with hash -404867559, now seen corresponding path program 3 times [2022-12-13 22:10:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:29,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251768307] [2022-12-13 22:10:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 22:10:29,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:29,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251768307] [2022-12-13 22:10:29,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251768307] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:29,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676700778] [2022-12-13 22:10:29,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:10:29,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:29,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:29,179 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:29,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 22:10:29,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 22:10:29,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:10:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 22:10:29,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 22:10:29,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 22:10:29,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676700778] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:29,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:29,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 22 [2022-12-13 22:10:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285712675] [2022-12-13 22:10:29,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:29,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 22:10:29,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 22:10:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:10:29,427 INFO L87 Difference]: Start difference. First operand 617 states and 890 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 22:10:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:10:32,636 INFO L93 Difference]: Finished difference Result 868 states and 1226 transitions. [2022-12-13 22:10:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-13 22:10:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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) Word has length 32 [2022-12-13 22:10:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:10:32,638 INFO L225 Difference]: With dead ends: 868 [2022-12-13 22:10:32,638 INFO L226 Difference]: Without dead ends: 691 [2022-12-13 22:10:32,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=451, Invalid=4519, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 22:10:32,639 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 147 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:10:32,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 455 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 22:10:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-12-13 22:10:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 582. [2022-12-13 22:10:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.4285714285714286) internal successors, (830), 581 states have internal predecessors, (830), 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 22:10:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 830 transitions. [2022-12-13 22:10:33,203 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 830 transitions. Word has length 32 [2022-12-13 22:10:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:10:33,204 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 830 transitions. [2022-12-13 22:10:33,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 22:10:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 830 transitions. [2022-12-13 22:10:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 22:10:33,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:10:33,204 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:10:33,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 22:10:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 22:10:33,405 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:10:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:10:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1396440605, now seen corresponding path program 8 times [2022-12-13 22:10:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:10:33,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751199416] [2022-12-13 22:10:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:10:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:10:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:10:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:10:33,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:10:33,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751199416] [2022-12-13 22:10:33,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751199416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:10:33,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159390582] [2022-12-13 22:10:33,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:10:33,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:10:33,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:10:33,677 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:10:33,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 22:10:33,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:10:33,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:10:33,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 22:10:33,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:10:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:10:33,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:10:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:10:33,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159390582] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:10:33,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:10:33,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10, 10] total 27 [2022-12-13 22:10:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678831808] [2022-12-13 22:10:33,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:10:33,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 22:10:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:10:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 22:10:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702 [2022-12-13 22:10:33,956 INFO L87 Difference]: Start difference. First operand 582 states and 830 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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 22:11:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:28,698 INFO L93 Difference]: Finished difference Result 1848 states and 2436 transitions. [2022-12-13 22:11:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2022-12-13 22:11:28,699 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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 22:11:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:28,702 INFO L225 Difference]: With dead ends: 1848 [2022-12-13 22:11:28,702 INFO L226 Difference]: Without dead ends: 1762 [2022-12-13 22:11:28,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49735 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=5237, Invalid=112069, Unknown=0, NotChecked=0, Total=117306 [2022-12-13 22:11:28,706 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 1089 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 5126 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 5889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 5126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:28,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 854 Invalid, 5889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 5126 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-13 22:11:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-12-13 22:11:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 669. [2022-12-13 22:11:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.4281437125748504) internal successors, (954), 668 states have internal predecessors, (954), 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 22:11:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 954 transitions. [2022-12-13 22:11:29,413 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 954 transitions. Word has length 33 [2022-12-13 22:11:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:29,413 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 954 transitions. [2022-12-13 22:11:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 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 22:11:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 954 transitions. [2022-12-13 22:11:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 22:11:29,413 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:29,413 INFO L195 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:29,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 22:11:29,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 22:11:29,614 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1620848866, now seen corresponding path program 9 times [2022-12-13 22:11:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:11:29,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905129469] [2022-12-13 22:11:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:29,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:11:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:11:29,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:11:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905129469] [2022-12-13 22:11:29,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905129469] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:11:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344446162] [2022-12-13 22:11:29,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:11:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:11:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:11:29,800 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:11:29,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 22:11:29,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 22:11:29,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:11:29,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 22:11:29,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 22:11:29,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:11:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 22:11:30,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344446162] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:11:30,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:11:30,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 8] total 27 [2022-12-13 22:11:30,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898118319] [2022-12-13 22:11:30,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:11:30,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 22:11:30,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:11:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 22:11:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-12-13 22:11:30,013 INFO L87 Difference]: Start difference. First operand 669 states and 954 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 22:11:36,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:11:36,217 INFO L93 Difference]: Finished difference Result 1163 states and 1669 transitions. [2022-12-13 22:11:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-12-13 22:11:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 22:11:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:11:36,219 INFO L225 Difference]: With dead ends: 1163 [2022-12-13 22:11:36,219 INFO L226 Difference]: Without dead ends: 995 [2022-12-13 22:11:36,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5159 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1390, Invalid=15122, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 22:11:36,220 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 189 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:11:36,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 842 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 22:11:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-12-13 22:11:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 743. [2022-12-13 22:11:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.417789757412399) internal successors, (1052), 742 states have internal predecessors, (1052), 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 22:11:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1052 transitions. [2022-12-13 22:11:37,009 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1052 transitions. Word has length 33 [2022-12-13 22:11:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:11:37,009 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1052 transitions. [2022-12-13 22:11:37,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 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 22:11:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1052 transitions. [2022-12-13 22:11:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 22:11:37,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:11:37,010 INFO L195 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:11:37,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 22:11:37,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:11:37,211 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:11:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:11:37,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1635545740, now seen corresponding path program 10 times [2022-12-13 22:11:37,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:11:37,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091950891] [2022-12-13 22:11:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:11:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:11:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:11:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:11:37,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:11:37,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091950891] [2022-12-13 22:11:37,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091950891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:11:37,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810516993] [2022-12-13 22:11:37,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:11:37,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:11:37,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:11:37,425 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:11:37,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 22:11:37,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:11:37,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:11:37,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 22:11:37,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:11:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:11:37,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:11:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 22:11:37,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810516993] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:11:37,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:11:37,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2022-12-13 22:11:37,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748854487] [2022-12-13 22:11:37,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:11:37,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 22:11:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:11:37,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 22:11:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 22:11:37,839 INFO L87 Difference]: Start difference. First operand 743 states and 1052 transitions. Second operand has 37 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 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 22:12:10,354 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:12:36,850 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:12:50,495 WARN L233 SmtUtils]: Spent 10.72s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:13:03,281 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:13:24,800 WARN L233 SmtUtils]: Spent 9.91s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:14:03,110 WARN L233 SmtUtils]: Spent 7.62s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:18:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:00,047 INFO L93 Difference]: Finished difference Result 1953 states and 2917 transitions. [2022-12-13 22:18:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2022-12-13 22:18:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 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 35 [2022-12-13 22:18:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:00,051 INFO L225 Difference]: With dead ends: 1953 [2022-12-13 22:18:00,051 INFO L226 Difference]: Without dead ends: 1754 [2022-12-13 22:18:00,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24204 ImplicationChecksByTransitivity, 356.0s TimeCoverageRelationStatistics Valid=12771, Invalid=46034, Unknown=1, NotChecked=0, Total=58806 [2022-12-13 22:18:00,054 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 2124 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 1597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1597 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:00,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2124 Valid, 1127 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1597 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-12-13 22:18:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-12-13 22:18:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 824. [2022-12-13 22:18:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 1.454434993924666) internal successors, (1197), 823 states have internal predecessors, (1197), 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 22:18:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1197 transitions. [2022-12-13 22:18:00,999 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1197 transitions. Word has length 35 [2022-12-13 22:18:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:00,999 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1197 transitions. [2022-12-13 22:18:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 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 22:18:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1197 transitions. [2022-12-13 22:18:00,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 22:18:01,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:01,000 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:01,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 22:18:01,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 22:18:01,201 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:18:01,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1563221799, now seen corresponding path program 11 times [2022-12-13 22:18:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:18:01,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086014205] [2022-12-13 22:18:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:18:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:18:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:18:01,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086014205] [2022-12-13 22:18:01,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086014205] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:18:01,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171944065] [2022-12-13 22:18:01,864 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:18:01,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:18:01,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:18:01,865 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:18:01,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 22:18:02,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 22:18:02,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:18:02,302 WARN L261 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 22:18:02,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:18:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:18:03,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:18:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:18:04,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171944065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:18:04,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:18:04,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26, 26] total 61 [2022-12-13 22:18:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743738347] [2022-12-13 22:18:04,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:18:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-13 22:18:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:18:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-13 22:18:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=3180, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 22:18:04,360 INFO L87 Difference]: Start difference. First operand 824 states and 1197 transitions. Second operand has 61 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 61 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 22:18:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:21,084 INFO L93 Difference]: Finished difference Result 1493 states and 1977 transitions. [2022-12-13 22:18:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-13 22:18:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 61 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 36 [2022-12-13 22:18:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:21,087 INFO L225 Difference]: With dead ends: 1493 [2022-12-13 22:18:21,087 INFO L226 Difference]: Without dead ends: 1342 [2022-12-13 22:18:21,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=2106, Invalid=14664, Unknown=0, NotChecked=0, Total=16770 [2022-12-13 22:18:21,089 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 383 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:21,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 553 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 22:18:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-12-13 22:18:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 819. [2022-12-13 22:18:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.4486552567237163) internal successors, (1185), 818 states have internal predecessors, (1185), 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 22:18:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1185 transitions. [2022-12-13 22:18:22,134 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1185 transitions. Word has length 36 [2022-12-13 22:18:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:22,134 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1185 transitions. [2022-12-13 22:18:22,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.6229508196721312) internal successors, (99), 61 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 22:18:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1185 transitions. [2022-12-13 22:18:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 22:18:22,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:22,135 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:22,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 22:18:22,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 22:18:22,336 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:18:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 231042247, now seen corresponding path program 4 times [2022-12-13 22:18:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:18:22,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164390780] [2022-12-13 22:18:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:18:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 22:18:22,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:18:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164390780] [2022-12-13 22:18:22,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164390780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:18:22,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854793310] [2022-12-13 22:18:22,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:18:22,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:18:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:18:22,540 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:18:22,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 22:18:22,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:18:22,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:18:22,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 22:18:22,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:18:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 22:18:22,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:18:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 22:18:22,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854793310] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:18:22,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:18:22,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 25 [2022-12-13 22:18:22,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147182950] [2022-12-13 22:18:22,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:18:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 22:18:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:18:22,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 22:18:22,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2022-12-13 22:18:22,739 INFO L87 Difference]: Start difference. First operand 819 states and 1185 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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 22:18:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:18:39,723 INFO L93 Difference]: Finished difference Result 1667 states and 2314 transitions. [2022-12-13 22:18:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-12-13 22:18:39,723 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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 36 [2022-12-13 22:18:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:18:39,726 INFO L225 Difference]: With dead ends: 1667 [2022-12-13 22:18:39,726 INFO L226 Difference]: Without dead ends: 1573 [2022-12-13 22:18:39,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5672 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1466, Invalid=15826, Unknown=0, NotChecked=0, Total=17292 [2022-12-13 22:18:39,728 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 639 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:18:39,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 827 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2756 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 22:18:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-12-13 22:18:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 807. [2022-12-13 22:18:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 1.4429280397022333) internal successors, (1163), 806 states have internal predecessors, (1163), 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 22:18:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1163 transitions. [2022-12-13 22:18:40,773 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1163 transitions. Word has length 36 [2022-12-13 22:18:40,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:18:40,773 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 1163 transitions. [2022-12-13 22:18:40,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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 22:18:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1163 transitions. [2022-12-13 22:18:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 22:18:40,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:18:40,774 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:18:40,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 22:18:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 22:18:40,975 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:18:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:18:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 61818599, now seen corresponding path program 9 times [2022-12-13 22:18:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:18:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886863744] [2022-12-13 22:18:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:18:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:18:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:18:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:18:41,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:18:41,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886863744] [2022-12-13 22:18:41,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886863744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:18:41,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727852467] [2022-12-13 22:18:41,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:18:41,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:18:41,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:18:41,218 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:18:41,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 22:18:41,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 22:18:41,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:18:41,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 22:18:41,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:18:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:18:41,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:18:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 22:18:42,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727852467] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:18:42,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:18:42,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 19] total 47 [2022-12-13 22:18:42,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027558191] [2022-12-13 22:18:42,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:18:42,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-13 22:18:42,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:18:42,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-13 22:18:42,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=1730, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 22:18:42,247 INFO L87 Difference]: Start difference. First operand 807 states and 1163 transitions. Second operand has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 states have internal predecessors, (75), 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 22:19:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:19:16,623 INFO L93 Difference]: Finished difference Result 1924 states and 2784 transitions. [2022-12-13 22:19:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-12-13 22:19:16,624 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 states have internal predecessors, (75), 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 36 [2022-12-13 22:19:16,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:19:16,627 INFO L225 Difference]: With dead ends: 1924 [2022-12-13 22:19:16,627 INFO L226 Difference]: Without dead ends: 1832 [2022-12-13 22:19:16,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9035 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=5754, Invalid=21306, Unknown=0, NotChecked=0, Total=27060 [2022-12-13 22:19:16,629 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1159 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 5417 mSolverCounterSat, 942 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 6359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 942 IncrementalHoareTripleChecker+Valid, 5417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 22:19:16,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1253 Invalid, 6359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [942 Valid, 5417 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 22:19:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2022-12-13 22:19:17,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 882. [2022-12-13 22:19:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.449489216799092) internal successors, (1277), 881 states have internal predecessors, (1277), 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 22:19:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1277 transitions. [2022-12-13 22:19:17,897 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1277 transitions. Word has length 36 [2022-12-13 22:19:17,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:19:17,897 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1277 transitions. [2022-12-13 22:19:17,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 47 states have internal predecessors, (75), 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 22:19:17,898 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1277 transitions. [2022-12-13 22:19:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 22:19:17,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:19:17,898 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:19:17,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 22:19:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 22:19:18,099 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:19:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:19:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1506070490, now seen corresponding path program 12 times [2022-12-13 22:19:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:19:18,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26207185] [2022-12-13 22:19:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:19:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 22:19:18,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:19:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26207185] [2022-12-13 22:19:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26207185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:19:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545712596] [2022-12-13 22:19:18,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 22:19:18,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:19:18,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:19:18,240 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:19:18,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 22:19:18,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 22:19:18,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:19:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 22:19:18,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:19:18,418 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 22:19:18,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:19:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 22:19:18,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545712596] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:19:18,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:19:18,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2022-12-13 22:19:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352308041] [2022-12-13 22:19:18,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:19:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:19:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:19:18,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:19:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:19:18,442 INFO L87 Difference]: Start difference. First operand 882 states and 1277 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 22:19:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:19:23,526 INFO L93 Difference]: Finished difference Result 2165 states and 3088 transitions. [2022-12-13 22:19:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 22:19:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 38 [2022-12-13 22:19:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:19:23,530 INFO L225 Difference]: With dead ends: 2165 [2022-12-13 22:19:23,530 INFO L226 Difference]: Without dead ends: 1840 [2022-12-13 22:19:23,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-12-13 22:19:23,531 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 425 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:19:23,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 255 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:19:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-12-13 22:19:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 982. [2022-12-13 22:19:24,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.4678899082568808) internal successors, (1440), 981 states have internal predecessors, (1440), 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 22:19:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1440 transitions. [2022-12-13 22:19:24,855 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1440 transitions. Word has length 38 [2022-12-13 22:19:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:19:24,855 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1440 transitions. [2022-12-13 22:19:24,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 22:19:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1440 transitions. [2022-12-13 22:19:24,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 22:19:24,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:19:24,855 INFO L195 NwaCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:19:24,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 22:19:25,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:19:25,057 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:19:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:19:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash 491807239, now seen corresponding path program 4 times [2022-12-13 22:19:25,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:19:25,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649824953] [2022-12-13 22:19:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:19:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:19:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:19:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:19:25,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:19:25,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649824953] [2022-12-13 22:19:25,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649824953] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:19:25,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400219300] [2022-12-13 22:19:25,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:19:25,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:19:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:19:25,484 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:19:25,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33dad594-e78f-426c-8210-9b3a8b1924d3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 22:19:25,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:19:25,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:19:25,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 22:19:25,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:19:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:19:25,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:19:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:19:26,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400219300] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:19:26,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:19:26,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 59 [2022-12-13 22:19:26,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671145175] [2022-12-13 22:19:26,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:19:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-13 22:19:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:19:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-13 22:19:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=2576, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 22:19:26,759 INFO L87 Difference]: Start difference. First operand 982 states and 1440 transitions. Second operand has 59 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 59 states have internal predecessors, (70), 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 22:21:07,162 WARN L233 SmtUtils]: Spent 56.94s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 22:21:09,495 WARN L837 $PredicateComparison]: unable to prove that (and (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 14) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 19) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 24) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 17) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296)) (< 0 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 21) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 25) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 23) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 22) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 20) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 15) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 18) 4294967296))) is different from false [2022-12-13 22:21:11,643 WARN L837 $PredicateComparison]: unable to prove that (and (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 14) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 19) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 24) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 17) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296)) (< 0 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 21) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 25) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296)) (< 0 (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 23) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 26) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 22) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 20) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 15) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 18) 4294967296))) is different from false [2022-12-13 22:21:13,654 WARN L837 $PredicateComparison]: unable to prove that (and (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 14) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 19) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 24) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 17) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296)) (< 0 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 21) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 23) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 22) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 20) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 15) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 18) 4294967296))) is different from false